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ORDER NO. MD0704045CE

CD Stereo System

SA-AK350PL
Colour (S)... Silver Type

Notes: This model's CD mechanism changer unit is CRS1. Please refer to the original Service Manual (Order No. MD0509368C0) for this mechanism.

Specifications
RMS output power THD 10%, both channels driven 1 kHz (Low channel) 10 kHz (High channel) Total Bi-Amp power PMPO n FM/AM TUNER, TERMINALS SECTION Preset station Frequency Modulation (FM) Frequency range 87.9 to 107.9 MHz (200 kHz steps) 87.5 to 108.0 MHz (100 kHz steps) Sensitivity S/N 26 dB Antenna terminal(s) Amplitude Modulation (AM) Frequency range Sensitivity S/N 20 dB (at 1000 kHz) Audio performance (Amplifier) 560 µV/m 520 to 1710 kHz (10 kHz step) 4.0 µV (IHF) 2.2 µV 75 (unbalanced) FM 20 stations AM 15 stations 112.5 W per channel (3 ) 450 W 4800 W 112.5 W per channel (3 ) Input Sensitivity/ Input Impedance Aux Music Port input jack Terminal Sensitivity Phone jack Terminal Mic jack Terminal Sensitivity n CASSETTE DECK SECTION Track system Heads Record/playback Erasure Motor Recording system Erasing system Tape speed Overall frequency response (+3, -6 dB) at DECK OUT NORMAL S/N ratio Wow and flutter 35 Hz to 14 kHz 50 dB (A weighted) 0.18 % (WRMS) Solid permalloy head Double gap ferrite head DC servo motor AC bias 100 kHz AC erase 100 kHz 4.8 cm/s 4 track, 2 channel Mono, 3.5 mm jack 0.7 mV, 680 Stereo, 3.5 mm jack Stereo, 3.5 mm jack 100 mV, 4.7 k 250 mV, 14.7 k

© 2007 Matsushita Electric Industrial Co. Ltd.. All rights reserved. Unauthorized copying and distribution is a violation of law.

SA-AK350PL

Fast forward and rewind time n DISC SECTION Disc played [8 cm or 12 cm] (1) CD-Audio (CD-DA)

Approx. 120 seconds with C-60 cassette tape

Number of channels n GENERAL Power supply Power consumption Power consumption in standby mode Dimensions (W x H x D) Mass Operating temperature range Operating humidity range n SYSTEM SC-AK350 (PL)

2 (Stereo) (FL, FR) AC 120 V, 60Hz 115 W 0.28 W 250 x 330 x 323 mm 7.1 kg +5 to +35°C 5 to 90% RH (no condensation) Music center: SA-AK350 (PL) Speaker: SB-AK350 (PL)

(2) CD-R/RW (CD-DA, MP3* formatted disc) (3) MP3* *MPEG-1 Layer 3, MPEG-2 Layer 3 Bit rate MP3 Sampling frequency MP3 CD-DA Decoding Digital filter D/A converter Pick up Wavelength Beam Source Audio output (Disc) 780 nm Semiconductor laser 32 kHz, 44.1 kHz, 48 kHz 44.1 kHz 16 bit linear 8 fs MASH (1 bit DAC) 32 kbps to 320 kbps

For Information on speaker system, plesae refer to the original Service Manual (Order No. MD0704046CE) for SB-AK350PL-S. Notes: 1. Specifications are subject to change without notice. Mass and dimensions are approximate. 2. Total harmonic distortion is measured by the digital spectrum analyzer.

CONTENTS
Page
1 Safety Precautions 1.1. General Guidelines 1.2. Before repair and adjustment 1.3. Protection Circuitry 1.4. Safety Part Information 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 3 Handling Precautions For Traverse Deck 4 Precaution of laser diode 5 About Lead Free Solder (PbF) 5.1. Service caution based on legal restrictions 6 Accessories 7 Operating Procedures 7.1. Main Unit Key Buttons Operations 7.2. Remote Control Key Buttons Operations 8 New Features 8.1. Using the Music Port 9 Self diagnosis and special mode setting 9.1. Service Mode Summary Table 9.2. Special Mode Table 1 9.3. Reliability Test Mode (CRS1 Mechanism) 9.4. Error code Table Display 10 Assembling and Disassembling 10.1. Caution 10.2. Disassembly flow chart 5 7 9 10 10 11 12 12 13 14 14 16 16 16 19 21 26 26 27 4 4 4 5 5 10.3. Main Parts Location 10.4. Disassembly of Top Cabinet 10.5. Disassembly of CD Changer Unit (CRS1) 10.6. Disassembly of Rear Panel 10.7. Disassembly of Main P.C.B. 10.8. Disassembly of Transformer P.C.B. 10.9. Disassembly of Power P.C.B. 10.10. Disassembly of Front Panel Unit 10.11. Disassembly for Panel P.C.B. 10.12. Disassembly of Tact Switch P.C.B. 10.13. Disassembly of Deck mechanism unit 10.14. Disassembly of Deck P.C.B. 10.15. Disassembly of Traverse Unit 10.16. Disassembly for Deck Mechanism 10.17. Disassembly of Deck Mechanism P.C.B. 10.18. Disassembly of cassette lid 10.19. Rectification for tape jam problem 11 Service Fixture and Tools 12 Service Positions 12.1. Checking and Repairing of Main P.C.B. 12.2. Checking and Repairing of Transformer P.C.B. 12.3. Checking and Repairing of Panel, Deck & Deck Mechanism P.C.B. 12.4. Checking and Repairing of Power P.C.B. 43 44

Page
28 29 29 30 31 31 32 33 34 34 35 35 35 37 39 40 40 42 42 42 43

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13 Procedure for Checking Operation of Individual Parts of Deck Mechanism Unit 13.1. Operation Check with Cassette Tape 13.2. Operation Check without Cassette Tape 14 Measurement And Adjustments 14.1. Cassette Deck Section 15 Voltage and Waveform Chart 15.1. CD Servo P.C.B. 15.2. Deck P.C.B. & Deck Mechanism P.C.B. 15.3. Main P.C.B. 15.4. Panel P.C.B. 15.5. Power P.C.B. & Transformer P.C.B. 15.6. Waveform Chart 16 Wiring Connection Diagram 17 Block Diagram 17.1. CD Servo Diagram 17.2. Deck/ Deck Mechanism Diagram 17.3. Main Diagram 17.4. Panel Diagram 17.5. Power Diagram 17.6. Transformer Diagram 18 Notes Of Schematic Diagram 19 Schematic Diagram 19.1. (A) CD Servo Circuit 19.2. (B) Main Circuit 45 45 45 47 47 49 49 49 50 50 51 52 53 55 55 56 57 59 60 61 63 65 65 66

19.3. (C) Panel Circuit 19.4. (D) Sub Panel Circuit & (G) Deck Mechanism Circuit 19.5. (E) Power Circuit 19.6. (F) Deck Circuit 19.7. (H) Transformer Circuit 20 Printed Circuit Board 20.1. (A) CD Servo P.C.B., (F) Deck P.C.B. & (G) Deck Mechanism P.C.B. 20.2. (B) Main P.C.B. 20.3. (C) Panel P.C.B. 20.4. (D) Sub Panel P.C.B. 20.5. (E) Power P.C.B. 20.6. (H) Transformer P.C.B. 21 Illustration of ICs, Transistors and Diodes 22 Terminal Function of IC's 22.1. IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital filter and D/A Converter 22.2. IC7002 (BA5948FPE2) IC 4CH Drive 22.3. IC2801 (C2CBYY000482) System Microprocessor 23 Exploded Views 23.1. Cabinet Parts Location 23.2. Deck Mechanism Parts Location (RAA4403-S) 23.3. Packaging 24 Replacement Parts List

70 71 72 74 75 77 78 79 80 81 82 83 85 86 86 87 87 89 89 91 92 93

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1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, ensure that all the protective devices such as insulation barriers and insulation papers shields are properly installed. 3. After servicing, check for leakage current checks to prevent from being exposed to shock hazards. (This "Safety Precaution" is applied only in U.S.A.) 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only manufacturer's recommended components for safety. 3. Check the condition of the power cord. Replace if wear or damage is evident. 4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc. 5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent the customer from being exposed to a shock hazard.

1.1.1.

Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug. 2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1M and 5.2M. When the exposed metal does not have a return path to the chassis, the reading must be .

1.1.2.

Leakage Current Hot Check (See Figure 1)

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. 2. Connect a 1.5k, 10 watts resistor, in parallel with a 0.15µF capacitor, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1. 3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor. 4. Check each exposed metallic part, and measure the voltage at each point. 5. Reverse the AC plug in the AC outlet and repeat each of the above measurements. 6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. Should the measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

Fig. 1

1.2.

Before repair and adjustment

Disconnect AC power, discharge Power Capacitors C5101, C5104, C5171, C5172, C5920, C5940 and C5950 through a 10, 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 120V, 60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~ 500mA.

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1.3.

Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed: · No sound is heard when the power is turned on. · Sound stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are "shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used. If this occurs, follow the procedure outlines below: 1. Turn off the power. 2. Determine the cause of the problem and correct it. 3. Turn on the power once again after one minute. Note : When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

1.4.

Safety Part Information

Safety Parts List: There are special components used in this equipment which are important for safety. in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts should These parts are marked by be replaced with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer. Table 1
Reference No. 360 L5601 L5602 L5603 L5604 L5950 T5950 T5951 Z5950 RL5950 F1 FP5940 FP5920 FP5950 JK5950 A2 R5950 C5920 Part No. RAE0165A-V G0B9R5K00001 G0B9R5K00001 G0B9R5K00001 G0B9R5K00001 ELF15N035AN G4CYAYY00134 G4C2AAJ00005 ERZV10V511CS K6B1AEA00015 K5D402APA008 K5G702Z00004 K5G702A00009 K5G402A00025 K2AB2B000007 K2CB2CB00018 ERC12UGK335D ECA1HM102E Part name & Description TRAVERSE UNIT CHOKE COIL CHOKE COIL CHOKE COIL CHOKE COIL LINE FILTER MAIN TRANSFORMER SUB TRANSFORMER ZENER POWER RELAY FUSE FUSE PROTECTOR FUSE PROTECTOR FUSE PROTECTOR JK AC INLET AC CORD 3.3M 1/2W 1000 50V Remarks

2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by electro static discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder remover device. Some solder removal devices not classified as "anti-static (ESD protected)" can generate electrical charge to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

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6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

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3 Handling Precautions For Traverse Deck
The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by the static electricity of clothes or our human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup). · Way of handling the traverse deck (optical pickup) 1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock. 2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board). 3. Do not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish the job in as short time as possible. 4. Do not turn the variable resistor for laser power adjustment. (It is pre-adjusted during production time)

Grounding for electrostatic breakdown prevention 1. Human body grounding Use the anti-static wrist strap to discharge the static electricity from your body. 2. Work table grounding Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, and ground the sheet. Caution : The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the traverse deck (optical pickup). Caution when replacing the Traverse Deck The traverse deck has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to remove the solder from the short point before making connections.

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4 Precaution of laser diode
CAUTION: This unit utilizes a class 1 laser diode in the optical pickup unit . Invisible laser radiation is emitted from the optical pickup lens. Wavelength: 780nm When the unit is turned on: 1. Do not look directly into the optical pickup lens. 2. Do not use optical instruments to look at the optical pickup lens. 3. Do not adjust the preset variable resistor on the optical pickup lens. 4. Do not disassemble the optical optical pickup unit. 5. If the optical pickup is replaced, use the manufacturer's specified replacement pickup only. 6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. CAUTION!
THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

n Use of caution label

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5 About Lead Free Solder (PbF)
5.1.
5.1.1.

Service caution based on legal restrictions
General description about Lead Free Solder (PbF)

The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that of the normal solder. Definition of PCB Lead Free Solder being used
The letter of "PbF" is printed either foil side or components side on the PCB using the lead free solder. (See right figure)

Service caution for repair work using Lead Free Solder (PbF) · The lead free solder has to be used when repairing the equipment for which the lead free solder is used. (Definition: The letter of "PbF" is printed on the PCB using the lead free solder.) · To put lead free solder, it should be well molten and mixed with the original lead free solder. · Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC. · Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the lead free solder. · Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees C (662±86°F). Recommended Lead Free Solder (Service Parts Route.) · The following 3 types of lead free solder are available through the service parts route. RFKZ03D01K-----------(0.3mm 100g Reel) RFKZ06D01K-----------(0.6mm 100g Reel) RFKZ10D01K-----------(1.0mm 100g Reel) Note * Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

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6 Accessories

Remote Control

FM Antenna Wire

AC Cord

AM Loop Antenna

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7 Operating Procedures
7.1. Main Unit Key Buttons Operations

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7.2.

Remote Control Key Buttons Operations

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8 New Features
8.1. Using the Music Port
This feature enables you to enjoy music from a portable audio equipment.

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With reference to page 15 of the operating instruction manual.

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9 Self diagnosis and special mode setting
This unit is equipped with functions for checking and inspecting namely: Self-Diagnostic and Test Mode.

9.1.

Service Mode Summary Table

The service modes can be activated by pressing various button combination on the main unit and remote control unit. Below is the summary for the various modes for checking:
Player button [ ] Remote control button unit [4], [7] Application Entering into Doctor Mode Note Refer to the section, "9.2 Special Mode Table 1 for more information. Note Refer to the section, "9.2.1 for more information. Refer to the section, "9.2 for more information. Refer to the section, "9.2 for more information. Refer to the section, "9.2 for more information. Refer to the section, "9.2 for more information. Refer to the section, "9.2 for more information.

Mode In Doctor Mode

Remote control button unit Main unit [ ], [4]+[7] [4] [Muting] [0] [DIMMER] [DISC] [7] [8] [9] [ ] [PRESET EQ] [H. Bass] [PROGRAM] [5] [6] [SLEEP] [<] [>] [ ] [ ]

Application Display of firmware version and EEPROM checksum

Set for cold start when reset start is executed the next time Clock Setting Tape Eject Test All segment display for the FL CRS1 Mechanism checking Volume 50 Setting check Volume 41 Setting check Volume 35 Setting check Volume 0 Setting check EQ Off EQ Heavy HIC force MUTE ON/ OFF CD To Tape recording Inspection Tape record's playback TPS Inspection FM Tuning check Tuner STEREO/ forced MONO FM Checking AM Checking

9.2.

Special Mode Table 1

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9.2.1.

EEPROM Checksum (ROM Correction)

Purpose: To check for microprocessor firmware version and EEPROM checksum (ROM correction). 18

SA-AK350PL

Below are the procedures for this mode. Step 1: Enter into Doctor mode (for more information, refer to section 9.2 on the key operation to enter into this mode. Step 2: Check for firmware version and EEPROM checksum (By pressing STOP button on main unit followed by "4" and "7" on remote control). · When entering into DOCTOR MODE, the firmware version and checksum data of EEPROM (if applicable) will appear on FL display. Below is the information on the EEPROM IC (ROM correction) under 3 possible situations: 1. In the case that the correction point existence data is other than 0 (ie. correction file exists), EEPROM checksum display for the microprocessor shall be made after calculating checksum by summing up the content of data area from EEPROM IC.

2. In the case when no EEPROM IC is installed. It is display as below (no display of checksum data)

3. In cases that the filename is different even though a EEPROM is installed, or no correction file exists, [NG] shall be displayed (the correction point existence data is set to 0 at this condition).

Note: Microprocessor firmware refers to version number for microprocessor IC located on PANEL P.C.B.. It is subject to change which would be updated accordingly. ROM correction checksum refers to the HEX code that is displayed upon key buttons pressed if an EEPROM is loaded in the unit.

9.3.

Reliability Test Mode (CRS1 Mechanism)

Below is the process flow chart of ageing for the CD changer unit. (CRS1)

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9.4.

Error code Table Display

Self-Diagnosis Function (refer Section 9.2) provides information on any problems occuring for the unit and its respective components by displaying the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is cleared. The error code is automatically display after entering into self-diagnostic mode.

9.4.1.

Error Code Table for Deck Mechanism

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9.4.2.

Error Code Table For CD Changer Block

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9.4.3.

Error Code Table For Power Supply

9.4.4.

CRS1 Error Code display

CRS1 Error Code display 1. The errors that occured in CRS1 Mechanism can be recalled and displayed, in the order of the occurence under self-diagnostic for procedures to enter this mode. · Only the first 5 errors will be memorized (in backup memory). The subsequence error shall be ignored and not memorize. For system with EEPROM as memory backup,memory space in EEPROM is neccesary. 2. To display all error code memorized In CRS1 Self-Diagnostic mode, press [SINGLE CHANGE] to display subsequence error code. It shall repeat after reaching error no. 5. e.g.: [1 _ _ _ _ I H M S] [SINGLE CHANGE] [2 _ _ _ _ I T O P] [SINGLE CHANGE] [3 _ _ _ _ H O M E] [SINGLE CHANGE] [4 _ _ _ _ L O A D] [SINGLE CHANGE] [5 _ _ _ _ _ U D D] [SINGLE CHANGE] 3. To clear the error code memory In CRS1 Self-Diagnostic mode, long press [SINGLE CHANGE] key (2s or more)

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10 Assembling and Disassembling
10.1. Caution
Special Note: This model uses a new CD changer unit CRS1. In this following section does not contain the necessary disassembly & assembly information for the CD changer unit (CRS1) except the disasembly & assembly of traverse unit. Kindly refer to the original service manual for the CD changer unit. (Order No. MD0509368C0). "ATTENTION SERVICER" Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replacement are required. 4. Refer to the Parts No. on the page of "Parts Location and Replacement Parts List" (Section 24), if necessary. Caution: After replacing of CD Changer Unit, ageing test is necessary. Please confirm operation for CD Changer Unit. Below is the list of disassembly sections · Disassembly of Top Cabinet · Disassembly of Rear Panel · Disassembly of CD Changer Unit (CRS1) · Disassembly of Main P.C.B. · Disassembly of Transformer P.C.B. · Disassembly of Power P.C.B. · Disassembly of Front Panel Unit · Disassembly of Panel P.C.B. · Disassembly of Tact Switch P.C.B. · Disassembly of Deck Mechanism Unit · Disassembly for Deck P.C.B. · Disassembly of Traverse Unit · Disassembly of Deck Mechanism · Disassembly of Deck Mechanism P.C.B. · Disassembly of cassette lid · Rectification for tape jam problem

Below shown is part no. of different screws types used:

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10.2. Disassembly flow chart
The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart as below.

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10.3. Main Parts Location

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10.4. Disassembly of Top Cabinet
Step 1 Remove 3 screws on both sides on top cabinet. Step 2 Remove 5 screws at the rear. Step 3 Lift the sides of top cabinet outwards. Step 4 Push the top cabinet backwards to release catches. Step 5 Remove top cabinet.

10.5. Disassembly of CD Changer Unit (CRS1)
· Follow the (Step 1) - (Step 5) of Item 10.4 Step 1 Remove 1 screw at rear panel.

Step 2 Detach the FFC cables at connectors (CN2801 & CN2805) on Main P.C.B..

Step 3 Release the claws outwards on both ends.

Step 4 Lift the CD changer unit upwards to remove it.

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· Disassembly of Mecha Chassis

Step 5 Remove 2 screws. Step 6 Remove the Mecha Chassis. Note: For disassembly & assembly of traverse unit, please refer to section 10.15 of this service manual. Please refer to original Service Manual for the Disassembly and Assembly of the CD Changer Unit (CRS1).

10.6. Disassembly of Rear Panel
· Follow the (Step 1) - (Step 5) of Item 10.4 Step 1 Remove 7 screws.

Step 4 Remove rear panel.

Step 2 Detach cable at connector (CN2810) on Main P.C.B..

Step 3 Detach FFC cables at connectors (CN2801 & CN2805) on Main P.C.B..

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10.7. Disassembly of Main P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 4) of Item 10.6 Step 1 Detach FFC cables at connectors (CN2803 & CN2806) on Main P.C.B.. Step 2 Remove Main P.C.B..

10.8. Disassembly of Transformer P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 4) of Item 10.6

Step 1 Detach cables at connectors (CN5950 & CN5951) on Transformer P.C.B.. Step 2 Remove 3 screws (Mounting screws for transformer to bottom chassis).

Step 3 Push the Transformer P.C.B. backwards to remove it.

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10.9. Disassembly of Power P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 4) of Item 10.6 · Follow the (Step 1) - (Step 3) of Item 10.7

Step 1 Remove the 4 screws on Power P.C.B..

Step 3 Remove IC5301 from heat sink unit. Note: For disassembly of IC5101, Q5101, Q5102, Q5111 and Q5112 repeat (Step 1) to (Step 2). (For information, IC5101, Q5101, Q5102, Q5111 and Q5112 does not have IC clip.) · Replacement of IC5501. Step 1 Flip the Power P.C.B. over and desolder the pins of IC5501.

Step 2 Detach cable at connector (CN5950) on Transformer P.C.B.. Step 3 Remove Power P.C.B.. Note: Insulate the Power P.C.B. with insulation material to avoid short circuit. · Replacement of Power Amp IC (IC5301). Step 1 Flip the Power P.C.B. over and desolder the pins. Step 2 Twist the heat sink leg at as arrow shown.

Step 2 Remove 1 screw and IC clip.

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Step 3 Remove up the heat sink sub assembly (with IC5501). Step 4 Remove screw and IC clip. Step 5 Remove IC5501 from the sub assembly.

Caution: During assembly of the heat sink sub assembly (with IC5501) all soldering points is touch-up to avoid dryjoints.

10.10. Disassembly of Front Panel Unit
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 Step 1 Detach FFC cables at connectors (CN2803 & CN2806) on Main P.C.B.. Step 2 Detach cable at connector (CN5951) on Transformer P.C.B.. Step 4 Release 2 claws outwards.

Step 5 Remove the front panel unit. Step 3 Bent the front panel unit slightly forward as arrow shown. Note: Ensure 2 claws located at the bottom chassis is seated into the 2 slots at bottom of front panel at 2 catches (one on each side) of bottom chassis to be aligned to front panel's slot. Assembly is secured upon hearing clicking sound.

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10.11. Disassembly for Panel P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 Step 1 Remove the volume knob.

Step 4 Remove Panel P.C.B..

10.11.1. Disassembly of Lid
Step 1 Lift the spring sideward. Step 2 Remove 6 screws at Panel P.C.B.. Step 3 Release 8 catches.

Step 2 Remove Lid. Note: Do not misplace the spring.

10.12. Disassembly of Tact Switch P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 Step 1 Remove 6 screws at Tact Switch P.C.B.. Step 2 Remove Tact Switch P.C.B..

34

SA-AK350PL

10.13. Disassembly of Deck mechanism unit
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 Step 1 Remove the 4 screws.

Step 3 Tilt the cassette mechanism unit in the direction of arrow (1), and then remove it in the direction of arrow (2). Step 2 Push the lever upward, and then open the cassette lid ass'y. Note: For disassembly of parts for deck mechanism unit, refer to Section 10.16.

10.14. Disassembly of Deck P.C.B.
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 Step 1 Remove 2 screws. Step 2 Desolder wire at deck motor terminals.

Step 3 Remove Deck P.C.B.

10.15. Disassembly of Traverse Unit
· Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 Important notes: Ensure all the trays are in the "STOCK" position before proceeding to the disassemble of traverse unit. For procedures to set the trays in "STOCK" position, please refer to (5.3 Setting the Tray In "STOCK" position for CRS1 Service Manual order no. MD0509368C0)

35

SA-AK350PL

Step 3: Remove the traverse unit as arrow shown. · Assembly of Traverse Unit

Step 1: Press and hold the plunger lever and rotate the gear as arrows shown until it stop.

Step 1: Turn over the unit and install the traverse unit.

Step 2: Push the traverse slide plate as arrow shown to release the traverse unit. Caution: Do not exert strong force on the traverse slide plate.

36

SA-AK350PL

Step 2: Push the traverse slide plate as arrow shown to lock the traverse unit.

10.16. Disassembly for Deck Mechanism
· Follow the (Step 1) - (Step 4) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 · Follow the (Step 1) - (Step 3) of Item 10.13 · Follow the (Step 1) - (Step 3) of Item 10.14

10.16.1. Replacement of Pinch Roller and Head Block

37

SA-AK350PL

10.16.2. Replacement of Motor, Capstan Belt A, Capstan Belt B, and Winding Belt

38

SA-AK350PL

10.17. Disassembly of Deck Mechanism P.C.B.
· Follow the (Step 1) - (Step 4) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 · Follow the (Step 1) - (Step 3) of Item 10.13 39

SA-AK350PL

· Follow the (Step 1) - (Step 3) of Item 10.14 Step 1 Remove 1 screw. Step 2 Desolder plunger terminals. Step 3 Release catches.

Step 4 Remove Deck Mechanism P.C.B..

10.18. Disassembly of cassette lid
· Follow the (Step 1) - (Step 4) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 · Follow the (Step 1) - (Step 3) of Item 10.13 Step 1 Open the cassette lid. Step 2 Remove spring and push the cassette lid in the direction of arrows.

10.19. Rectification for tape jam problem
· Follow the (Step 1) - (Step 5) of Item 10.4 Step 1 If a cassette tape cannot be removed from the deck (the tape is caught by the capstan or pinch roller during playback or recording), rotate the flywheel F in the direction of the arrow to remove it.

40

SA-AK350PL

Step 2 Push the lever upward and open the cassette lid. Remove the cassette tape. Note: Follow 10.18 Disassembly of cassette lid (Step1) to (Step 3). Remove the cassette tape.

41

SA-AK350PL

11 Service Fixture and Tools
Service Tools Extension FFC (A) Deck P.C.B. - Main P.C.B. REEX0485 (14 Pins)

12 Service Positions
Note: For description of the disassembly procedures, see the Section 10.

12.1. Checking and Repairing of Main P.C.B.

42

SA-AK350PL

12.2. Checking and Repairing of Transformer P.C.B.

12.3. Checking and Repairing of Panel, Deck & Deck Mechanism P.C.B.

43

SA-AK350PL

12.4. Checking and Repairing of Power P.C.B.

44

SA-AK350PL

13 Procedure for Checking Operation of Individual Parts of Deck Mechanism Unit
13.1. Operation Check with Cassette Tape
1. Pull up the EJECT lever using a rubber band. (Fig. 6) 2. Supply DC5V to MOTOR. ( MOTOR rotates.) (Fig. 5) 3. Insert a cassette tape to the unit. 4. Supply DC9V to the plunger, and turn the power ON and OFF. ( Power +PL, -PL) (Fig. 5) a. FWD PLAY: Supply the plunger power in a flash. (ON: approx. 5msec) b. FWD FF: Supply the plunger power in a flash at PLAY mode. (ON: approx. 5msec) c. STOP: Supply the plunger power in a flash at FWD FF mode. (ON: approx. 5msec) d. REV PLAY: Supply the plunger power in a normal timing at STOP mode. (ON: approx. 200msec) e. REV REW: Supply the plunger power in a flash at REV PLAY mode. (ON: approx. 50msec) f. STOP: Supply the plunger power in a flash at FF mode. (ON: approx. 50msec) Repeat the operation ( FWD PLAY) (Note) Other operation may start if a timing of supplying the plunger power is missed.

13.1.1. Connection Status between Mechanism and Power Supply (Motor, Plunger)

13.1.2. Operative Parts of Deck Mechanism Unit (EJECT lever fitted with rubber band, Plunger/Rib operation)

Fig. 6

13.2. Operation Check without Cassette Tape
1. Pull up the EJECT lever using a rubber band. (Fig. 6) 2. Supply DC5V to MOTOR. ( MOTOR rotates.) 3. Lift up the mechanism unit's plunger/rib with the tip of a negative screwdriver, and operate the unit in the same timing as supplying the power. (Fig. 7)

45

SA-AK350PL

46

SA-AK350PL

14 Measurement And Adjustments
14.1. Cassette Deck Section
14.1.1. Requirements
· Test tape (QZZCFM) (QZZCWAT) · Normal blank cassette tape (QZZCRA) · Digital frequency counter · Oscilloscope · Electrical voltmeter · Headphone jack output jig (Fig 8)

14.1.2. Setting of Unit
· VOLUME: MAX

14.1.3. Preparations
1. Apply under [10. Assembling and Disassembling]. 2. Remove 4 screws from the mechanism unit to disassemble. under [10.13 Disassembly of Deck Mechanism Unit]. 3. Connect the headphone jack output jig (Fig 8) to headphone jack.

Fig. 8

Fig. 9

14.1.4. Tape Speed Adjustment
· Normal speed adjustment (only during forward playback) (Product reference value: 3,000±90Hz) 1. Connect a frequency indicator. (Fig 10) 2. Playback the middle portion of the test tape (QZZCWAT). 3. Adjust the motor screw so that the following output level is produced. (Fig 11) Adjustment Range: 3,000 ± 90Hz (a constant speed)

47

SA-AK350PL

Fig. 10

Fig. 11

14.1.5. Bias Voltage Check
1. Connect an electrical voltmeter. (Fig 12) (Fig 9 for location of test point) 2. Set the function to "TAPE" position. 3. Insert a normal blank cassette tape (QZZCRA). / )] button, press [TAPE( 4. While pressing and holding down [REC( pressing the buttons till the recording pause mode is activated.) 5. Check that the output level is within the standard range. Standard Range: 16 ± 3mV )] button to pause the recording mode. (Repeat

Fig. 12

14.1.6. Bias Frequency Check
1. Connect a digital frequency counter (Fig 13). 2. Set the function to "TAPE" position. 3. Insert a normal blank cassette tape (QZZCRA) and press "REC" mode on main unit. 4. Check that the output frequency is within the standard range.
Standard Value: 98 ±8 kHz

Fig. 13

48

SA-AK350PL

15 Voltage and Waveform Chart
Note: Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point, because it may differ from an actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.

15.1. CD Servo P.C.B.

15.2. Deck P.C.B. & Deck Mechanism P.C.B.

49

SA-AK350PL

15.3. Main P.C.B.

15.4. Panel P.C.B.

50

SA-AK350PL

15.5. Power P.C.B. & Transformer P.C.B.

51

SA-AK350PL

15.6. Waveform Chart

52

SA-AK350PL

16 Wiring Connection Diagram
AUX

JK2803 CN3601
10
. . . . . . .

PbF

2 1

9 . . . . . 1

CN2810

H5104

TUNER PACK

FAN MOTOR

1 1 12 CN2809
. . . . . . .

2
. . . . .

21

. . . . .

E POWER P.C.B.
SOLDER SIDE

22

1

CN2801

B MAIN P.C.B.
SOLDER SIDE

TO CRS1 (CN1)
12 CN2808 15
. . . . . . . . . . . .

LEFT SPEAKERS JK5101 RIGHT SPEAKERS
14
. . .

1

CN2805 CN2803
20 . . . . . . 2 21 . . . . . . . . .1

1

2

CN2806
30 . . . . . . . . 2 29 . . . . . . . . 1
PbF

1 . . . . . 12

CN5103

1 . . . . . 12

CN5102

CAUTION RISK OF ELECTRIC SHOCK AC VOL TAGE LINE. PLEASE DO NOT T OUCH THIS P.C.B

MIC

MIC VOL

HEADPHONE

PbF

T5951 SUB-TRANSFORMER

JK6501 H6555 9 . . . . . . 1 VR6511 JK6551

CN5951
1
. . . . . . .

JK5950

C PANEL P.C.B.
SOLDER SIDE

AC IN
T5950 POWER TRANSFORMER
9 . . . . . . . 1

120V 60Hz

9

CN5950

H TRANSFORMER P.C.B.
SOLDER SIDE

PbF

1
. . . . . . .

JW6002
PbF

10

Z6481 SENSOR
2
. . . . .

1
. . . . .

JW6001
1
. . . . . . .

29 30

VOLUME

CN6601 VR6491 JK6751
PbF

10

MUSIC PORT
PbF

D SUB PANEL P.C.B.
PbF

SOLDER SIDE

9 . . . . . 1

CS971
PL+ PL-

A SERVO P.C.B.
SOLDER SIDE

SOLENOID

G DECK MECHANISM P.C.B.
SOLDER SIDE

CN7002
22
. . . . . . . . .

4. .2 5. . . .1
PbF

21
. . . . . . . .

CP1301 TO R/P HEAD

F DECK P.C.B.
SOLDER SIDE

1

M
WR1903
2 1+
TRAVERSE MOTOR M7301

1615

MOT OR

M
SPINDLE MOTOR M7302

CN7001

21 20

.. .. .. .. .. .. .. .. . .. .. .

2

2 1

OPTICAL PICKUP

PbF

CP1902
9 . . . . . 1

CN1305

2

. . . . . . . . . . . . . .

1

53

SA-AK350PL

54

SA-AK350PL

17 Block Diagram
17.1. CD Servo Diagram
OPTICAL PICKUP
SEMICONDUCTOR LASER
Q7601 LASER POWER DRIVE B STAT CN7002 CN2801 4 19 CN7002 CN2801 12 11 MLD MCLK B MDATA CN7002 CN2801 6 17 CN7002 CN2801 15 8 CN7002 CN2801 7 16 TO MAIN (2/2) TO MAIN (1/2)

PHOTO DETECTOR
A 81 X7201 80 70 69 67 68 51 53 52 54 55

ARFIN IREF DSLF PLLF

X2 (SMCK) (PMCK)

B B TO MAIN (1/2) B F CN7002 CN2801 3 20

3.3V 3.3V

79 REGON 82 NTEST 61 NSRVMONON 72 NRST

MCLK MDATA

PLLFO

X1

STAT

MLD

3.3V 3.3V A, B, C, D, E, F

47 AVDD2 31 AVSS2 35~40 A,B,C,D,E,F 42 41 50 49 48
LD PD

TIMING GENERATOR [GEN]

MICRO COMPUTER INTERFACE [MCIF] SPINDLE CPU [DSV]

DSL/PLL/VCO [DSLPLL] EFM DEMODUALTION SYNC INTERPOLATION CIRC ECC CDROM ECC [DEMECC] CIRC RAM

TXTCK TXTD DQSY

SUBCODE INTERFACE [DEMECC]

(SBCK) (SUBC) (TXNCLDCK) FLAG BLKCK 65 71 20 18

B E
ARFF

ARFFB ARFOUT ARFDC

B

IC7002 BA5948FPE2

VREF VREF

4 CH DRIVE
VREF 26

45 RFOUT 46 RFIN 43 CENV CTRCRS 32 OSCIN 34 VREF 44 RFENV

CMOS RF AMPLIFIER

SERVO CPU [DSV] BUS CONTROL UNIT [BCU]

CN7002 CN2801 5 18 3.3V

TO MAIN (2/2)

1Mbit DRAM

PRAMVDD33 PRAMVSS33

D0~D15 A0~A11 BA0,BA1

83~92,94~99 1~7,11~15 16,17 8,9 10,100

VREF
FOP 22 PC 21 SPOUT 23 TRVP 24 TRP 25 FOP 29 SRVMON0 30 SRVMON1

A/D CONVERTER

MP3/WMA DECORDER FS CONVERTER [FSC] SERIAL OUTPUT INTERFACE [DAO]

NWE,NCAS NRAS,SDRCK EXT0 EXT1 EXT2 (LRCK) (BCLK) (SRDATA)

F-

16 D3[CH3] 15 D3+ LEVEL SHIFT

FOCUS COIL

IN3

28

F+

62 63 64

T-

18 D4[CH4] 17 D4+ LEVEL SHIFT

OUTPUT PORT

TRACKING COIL

IN4

27

TRP

DIGITAL FILTER 1bitDAC PWM LOGIC [DF, MASH] REGULATOR ANALOG LOWPASS FILTER

T+

(DVDD2) 76

SPINDLE MOTOR

M7302

M TRVM SPSP+

TRV+

14 D2+ 13 D2-

[CH2]

LEVEL SHIFT

IN2

1

TRVP

DIGITAL OUT
AVSS1

IOVDD2

TRAVERSE MOTOR

M7301

12 D1+ 11 D1-

[CH1]

LEVEL SHIFT MUTE [CH1] MUTE [CH2]

IN1 3

SPOUT

PC1 4 PC2 2

PC

SERVO PROCESSOR/ DIGITAL SIGNAL PROCESSOR/ DIGITAL FILTER D/A CONVERTER

IC7001 MN6627954MA

66

57 58 59 56

60 78 26

76

28 93

27

IOVDD1

DRVDD

DVDD2

DVDD1

AVDD1

DVSS3

DVSS2

DVSS1

OUTR

OUTL

TX

77 S7201 RESET SWITCH CN7002 CN2801 2 21 CN7002 CN2801 21 2 CN7002 CN2801 19 4 TO MAIN (1/2) TO MAIN (2/2)

3.3V 3.3V

3.3V 3.3V 3.3V LCH OUT RCH OUT

SA-AK350PL CD SERVO BLOCK DIAGRAM

55

SA-AK350PL

17.2. Deck/ Deck Mechanism Diagram

IC1001 LCH 22

AN7326K
(DECK 1) .B. HEAD

DECK R/P IC
19 Q1101 MUTE SWITCH RCH 4 1 Q1201 MUTE SWITCH 16 Q1302 MUTE SWITCH DRIVER

CN1305 CN2803 8

(DECK 2) HEAD

CN1305 CN2803 9 CN1305 CN2803 16 CN1305 CN2803 12
TO MAIN (1/2)

15

8

17 6 9

CN1305 CN2803 13

(DECK 2) ERASE HEAD

L1301

Q1309,Q1310 BIAS SWITCH Q1312

Q1304 SWITCH

Q1303 SWITCH

CN1305 CN2803 14

Q1317 SWITCH

SWITCH

4 2 IC1000 C1AA00000612 3 5

M

9V

Q1316 SWITCH

9V Q1314 SWITCH

CN1305 CN2803 2

DECK MECHANISM CIRCUIT
CS971 CP1902 5 CS971 CP1902 3 CN1305 CN2803 21 CN1305 CN2803 1

ANALOG SWITCH

TO MAIN (2/2)

VREF IC971 CNB13030R2AU D971

9V Q1315 SWITCH

PHOTO INTERUPTOR
S971 S972 S975 MODE LEAF LEAF

CS971 CP1902 1 CS971 CP1902 2 CS971 CP1902 6

CN1305 CN2803 6 CN1305 CN2803 4

TAPE EJECT CIRCUIT
S1901 TAPE EJECT

SIGNAL LINES

CN1305 CN2803 20

: MAIN SIGNAL LINE : AM SIGNAL LINE : FM SIGNAL LINE : TAPE RECORD SIGNAL LINE ( ) Indicates the Pin No. of Right Channel.

: CD SIGNAL LINE : FM/AM SIGNAL LINE : AUX SIGNAL LINE

: CD-DA (AUDIO/VIDEO) SIGNAL LINE : USB SIGNAL LINE : TAPE PLAYBACK SIGNAL

SA-AK350PL DECK/DECK MECHANISM BLOCK DIAGRAM

56

SA-AK350PL

17.3. Main Diagram

IC2803 C1BB00001121

AUDIO SOUND PROCESSOR
IN-L1 IN-R1 IN-L2 IN-R2 IN-L3 IN-R3 IN-L4 IN-R4 OP-IN OP_OUT 55 GV_OUT-L 54 GV_OUT-R 16 2 3 6 5 Q2242 AGC CONTROL SWITCH IC3700 C0ABBB000244 L-OUT 42 R-OUT 37 Q2311 MUTE SWITCH Q2411 MUTE SWITCH Q2142 AGC CONTROL SWITCH 3 2 5 6

FROM DECK

CN1305 CN2803 8 CN1305 CN2803 9 CN3601 6 CN3601 8 CN7002 CN2801 21 2 CN7002 CN2801 19 4 CN6601 CN2806 22

1 2 3 4 5 6 7 8 56

OP-AMP

IC2804 C0AABB000125 1 HPF 7 Q2317 MUTE SWITCH Q2417 MUTE SWITCH LPF

TO TUNER PACK

CN2809 CN5102 5 CN2809 CN5102 6 CN2809 CN5102 8 CN2809 CN5102 9

FROM POWER

FROM CD SERVO

15V

CN2809 CN5102 4

FROM PANEL

CN6601 CN2806 20 CN6601 CN2806 29

SMT OP-AMP
1 7

JK2803 AUX IN

11 IN-L6 12 IN-R6

REC-L 53 REC-R 17

39

40

Q2341 MUTE SWITCH

Q2441 MUTE SWITCH

Q2511 MUTE SWITCH DRIVER

3.3V QR2501, QR2502 SWITCH

CN2806 CN6601 27 CN2806 CN6601 25

DATA

CLK

FROM PANEL

MUTEA

CN2803 CN1305 12 CN2803 CN1305 13
Q2501 LEVEL METER CONTROL SWITCH D2503 LM.1 ASPDA ASPCLK IDCDET

FROM DECK

TO FAN

CN2810 1 CN2810 2

Q2942 FAN MOTOR ON/OFF SWITCH

12V

Q2943 FAN SUPPLY CONTROL SWITCH

CN2809 CN5102 12

FROM POWER

Q2949 DC DETECT SWITCH

Q2948 DC DETECT SWITCH

D2946

SA-AK350PL MAIN 1/2 DIAGRAM

57

SA-AK350PL

MUTEA

IDCDET ASPDA ASPCLK LM.1

IC4000 C0DBZGC00067

2

GND
STBY 3 OUT 1

3.3V REGULATOR

D2813 15V 6V D3400 VREF 5V 5V SW_LVL1 SW_LVL2 40 MUTE_A Q2803 RESET (MICRO-P) SWITCH D2811 26

ASP_DAT ASP_CLK LM_1

27 1

3.3V 12

/RESET EFP_RESET

7

FROM POWER
39

F_HOP MUTE_DA

CN5102 CN2809 1 CN5102 CN2809 3

3 15V

1

IC2872 C0CBAHG00011

VOLTAGE REGULATOR
VCC

CN1305 CN2803 5
OUT

56

QR3105

SWITCH

CN1305 CN2803 1
PLG FROM DECK
QR3106 SWITCH

58

CN1305 CN2803 2

MTR
97 95 59 57

DECK_AD2 DECK AD1 REC PHOTO
52

CN1305 CN2803 4 CN1305 CN2803 6 CN1305 CN2803 14 CN1305 CN2803 21

CE
22 30

D1 PLL_CLK
21

IC2801 C2CBYY000482

MICROPROCESSOR

58
TO TUNER PACK

CN3601 1 CN3601 2 CN3601 3 CN3601 4
SWITCH

DO
Q3601 15V

CN3601 7
D2937-D2941

15

Xout Xin
85

X2802 13

CN2805 4

CCW
84 80 86 83

10

CW HOME_SW ST_SW OPEN_SW
82

XciN Xcout

X2801 11

TO CRSI (CN1)

CLOSE_SW
87 55 54

PLAY_SW UP_SENSOR BOTTOM_SW

CN2805 1 CN2805 2 CN2805 5 CN2805 6 CN2805 7 CN2805 8 CN2805 11 CN2805 13 CN2805 14 CN2805 12

78

MCLK
D2936

77

MDATA_OUT MLD BLKCK STATUS
88

76

Q2937 CHANGER PLUNGER ON/OFF SWITCH

FROM CD SERVO

19 75 81

PLUNGER

CD_RST /RESTSW STANDBY
51 90

79

CN2801 15 CN2801 16 CN2801 17 CN2801 18 CN2801 19 CN2801 20 CN2801 21
Q2936 CD SUPPLY CONTROLSWITCH 50 47

CN7002 8 CN7002 7 CN7002 6 CN7002 5 CN7002 4 CN7002 3 CN7002 2
VOL_LED VOL_JOG
70 71 72

DCDET FL_CS FL_DOUT FL_CLK FROM PANEL
92

46

PCONT/EFP/CS

3

41

CN6601 CN2806 17 CN6601 CN2806 16 CN6601 CN2806 13 CN6601 CN2806 12 CN6601 CN2806 11

EE_CS/EFP/EPM EE_CLK KEY3
93 94 18 20

EE_CS
4 43 42

EE_CLK
5

EE_DAT KEY2 KEY1 RMT SYNC

EE_DAT
-9V

12V

5V

3.3V

3.3V

5.3V

IC2871

CN6601 CN2806 9 CN6601 CN2806 8 CN6601 CN2806 7 CN6601 CN2806 5 CN6601 CN2806 3

E-EPROM IC (NOT SUPPLIED)

CN2808 CN5103 9 CN2808 CN5103 10 CN2808 CN5103 5 CN2808 CN5103 6 CN2808 CN5103 12 CN2808 CN5103 11 CN2808 CN5103 8 CN2808 CN5103 7 CN2808 CN5103 4

SA-AK350PL MAIN 2/2 DIAGRAM

FROM POWER

SA-AK350PL

17.4. Panel Diagram

FL6602 5-11

FL1

25-40

1

FL2

A2BD00000172

FL DISPLAY

H6555 CN5951 7
TRANSFORMER

44

H6555 CN5951 1 H6555 CN5951 2
31-41 14-29 DIN 7

CN6601 CN2806 12 CN6601 CN2806 11 CN6601 CN2806 13
TO MAIN (2/2)

IC6601 C0HBB0000057

FL DRIVER

CLK STB

8 9

Z6481 REMOTE SENSOR

CN6601 CN2806 3 CN6601 CN2806 5

JK6501 MIC

Q6501 MIC AMP

Q6502 MIC AMP

VR6511 MIC VOLUME

CN6601 CN2806 29

TO MAIN (1/2) JK6751 MUSIC PORT

CN6601 CN2806 20 CN6601 CN2806 22
S6201-S6207

CN6601 CN2806 8 CN6601 CN2806 25 CN6601 CN2806 27

TO MAIN (2/2) TO MAIN (1/2)

JK6551 HEADPHONE

SUB PANEL CIRCUIT
S6301-S6309

JW6601 JW6002 3 JW6601 JW6002 7
+VREF

CN6601 CN2806 9

VR6491 MIC VOLUME

JW6601 JW6002 2 JW6601 JW6002 4 JW6601 JW6002 10 JW6601 JW6002 9
QR6457 LED DRIVE

+VREF

CN6601 CN2806 16
TO MAIN (2/2) S6101-S6105

S6106-S6108

CN6601 CN2806 7 CN6601 CN2806 17

MOT10V SUB PANEL P.C.B

JW6601 JW6002 8

SA-AK350PL PANEL DIAGRAM

59

SA-AK350PL

17.5. Power Diagram

IC5301 2

C1BA00000487
CN2809 CN5102 6
TO MAIN (1/2) IN1+

JK5101 L5301

2CH DIGITAL AMP
OUT1 10 OUT2 14 RCH.H RCH.L 3 IN121 IN2+ Q5153 MODE SWITCH Q5173 SWITCH Q5154 MODE SWITCH 22 IN21 OSC 23 MODE VDDA1 20 VSSA1 18

SPEAKER
RCH SPEAKER RCH.HIGH SPEAKER RCH.LOW

CN2809 CN5102 9

RCH

TO MAIN (2/2)

CN2809 CN5102 3 CN2808 CN5103 8

IC5401 2

C1BA00000487
IN1+

2CH DIGITAL AMP
CN2809 CN5102 5
TO MAIN (1/2) OUT1 10 OUT2 14 3 IN121 IN2+ 22 IN21 OSC 23 MODE VDDA1 20 VSSA1 18

L5401

LCH.H LCH.L

LCH

SPEAKER LCH.HIGH SPEAKER LCH.LOW

CN2809 CN5102 8

LCH

IC5201

C0JBAB000011

LOGIC
TO MAIN (2/2)

CN2809 CN5102 1

Q5201 FREQUENCY HOPPING SWITCH X5202

1 1A 2 1Y 3,6 2A,3Y 5 3A

5Y 10

X5201

Q5202 FREQUENCY HOPPING SWITCH

Q5103,Q5104 FAN ON/OFF SWITCH

TO MAIN (1/2)

CN2809 CN5102 12 CN2808 CN5103 4 CN2808 CN5103 7 CN2808 CN5103 11 CN2808 CN5103 9

D5126 Q5111 +15V REGULATOR Q5102 CURRENT CONTROL SWITCH Q5113 CURRENT LMIITER SWITCH Q5101,Q5110 CURRENT CONTROL SWITCH 26V REGULATOR Q5108,Q5109 SWITCH VOLTAGE REGULATOR

H5104 CN5950 1,2 H5104 CN5950 3,4 H5104 CN5950 8
TO TRANSFORMER

TO MAIN (2/2)

IC5101

Q5112,Q5114 CURRENT STABLISER 11V REGULATOR

C0DAZYY00005
CN2808 CN5103 10 CN2808 CN5103 5 CN2808 CN5103 6 CN2808 CN5103 4
D5130 4 1 5 5.6V 3.3V CTRL

REGULATOR IC
VCC 2

SA-AK350PL POWER DIAGRAM

60

SA-AK350PL

17.6. Transformer Diagram

T5950 D5950-D5953

H5104

CN5950 1,2

H5104
TO POWER

CN5950 3,4

H5104

CN5950

FP5950 D5954-D5957

Q5951

H6555

CN5951 2

VOLTAGE REGULATOR

H6555

CN5951 1

H6555

CN5951 3

Q5953 RL5950

H6555

CN5951 6

PCONT SWITCH

TO PANEL

Q5952

T5951

H6555

CN5951 7
D5966

SYNCHRONISATION SWITCH JK5950 AC INLET F1 L5950

SUB TRANSFORMER

MAIN TRANSFORMER

7

Z5950

Q5950

D5951, D5963 D5952

H6555

CN5951 4,5

VOLTAGE REGULATOR

SA-AK350PL TRANSFORMER DIAGRAM

61

SA-AK350PL

62

SA-AK350PL

18 Notes Of Schematic Diagram
(All schematic diagrams may be modified at any time with the development of new technology) Notes: S971: S972: S975: S6101: S6102: S6103: S6104: S6105: S6106: S6108: S6201: S6202: S6203: S6204: S6205: S6206: S6207: S6301: S6302: S6303: S6304: S6305: S6306: S6307: S6308: S6309: S7201: VR6491: VR6511: Mode switch. Half switch. Rec_Inh_F switch. Ac In ( ) switch. Multi Change ( ) switch. Open/ Close ( ) switch. Single Change ( ) switch. USB ( ) switch. Stop/ -Demo ( ) switch. Hard Bass switch. CD1 ( ) switch. CD2 ( ) switch. CD3 ( ) switch. CD4 ( ) switch. CD5 ( ) switch. /FF/ ( ) switch. /REW/ ( ) switch. Open ( ) switch. CD ( ) switch. Tape ( ) switch. Tuner/ FM/ AM switch. Ext In switch. Rec ( ) switch. M.EQ+ switch. Manual EQ switch. M.EQ- switch. Rest switch. VR Volume jog. VR Mic Volume jog. : Main Signal line : FM/AM Signal line : Tape Record Signal line : Tape Playback Signal line : Aux Signal line : MIC Signal line

· Importance safety notice : Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fireretardant (resistors), high-quality sound (capacitors), lownoise (resistors), etc. are used. When replacing any of components, be sure to use only manufacturer´s specified parts shown in the parts list. · Resistor Unit of resistance is OHM [] (K=1,000,000). · Capacitor Unit of resistance is µF, unless otherwise noted. F=Farad, pF=Pico-Farad · Coil Unit of inductance is H, unless otherwise noted. · Voltage and Signal lines: : +B Signal line : -B Signal line : CD DA Signal line : CD Signal line

63

SA-AK350PL

64

SA-AK350PL

19 Schematic Diagram
19.1. (A) CD Servo Circuit
1 2 3 4 5 6 7 8 9 10 11 12 13 14

A

SCHEMATIC DIAGRAM - 1 OPTICAL PICKUP CIRCUIT (FOR REFERENCE ONLY)
LASER DIODE 6 8 11 12 C C

CD SERVO CIRCUIT
CN7001
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 W7025 B1ADCF000001 0 LASER POWER DRIVE R7650 5.6 C7613 0.1 W7026 0 W7023 0 C7614 6.3V100

A
: + B SIGNAL LINE
W7022 C7626 0.1 0 W7020 0 W7019

: CD DA SIGNAL LINE
0 W7018 0

: CD SIGNAL LINE

B

1 GND C 2 VCC 3 BIN 4 AIN

NBOUT 8 GND 7 NAOUT 6 VREF 5 C

C

4 9 10 5 2 3

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

VCC F E LD LD GND GND A GND (GUARD) B VREF LPD GND (GUARD) TT+ FF+

Q7601

R7601 4.7

C7601 6.3V33

C7670 0.1

62 14

W7017 0

R7217 1k C7225 1000P C7226 1000P R7218 1k

D7650 MAZ80560ML 62 16 50V1

62 19

62 18 C7227

B

62 51

(RF)

W7021 0

W7014 0 C7217 0.1 R7211 82k C7244 0.015

C7218 0.082 C7241 1000P R7212 820

R7221 100 C7231 6.3V220 W7005 0 C7230 0.1

C7228 50V1

62 17

C
62 24 62 13

LB7262

LB7263

C

62 28

VREF

C7223 W7012 50V0.7 0 C7203 6.3V220

C7216 680P

D
W7013 0

W7024 0

E
GND1

62 90

C7352 0.018 FO GAIN

R7329 1k

FOP TRP TRVP PC SPOUT PRAMVDD33 PRAMVDD15 PRAMVSS33 BA1 BA0 A10 A0 A1 A2 A3 NRAS NCAS NWE A4 A5 A6 A7 A8 A9 A11

R7336 10

R7327 R7349 18k TRV GAIN 1k

50 W7015 49 0 C7204 48 0.1 C7102 47 0.47 46 C7142 45 3300P 62 50 44 C7107 43 0.022 42 41 40 39 38 37 36 35 34 R7111 33 10k 32 31 30 62 88 29 62 89 C7154 0.1 28 C7155 0.1 27 26 R7328 10k R7330 5.6K

ARFIN DSLF IREF PLLF PLLF0 OUTL AVSS1 AVDD1 OUTR DVSS3 NSRVMONON EXT0 EXT1 EXT2 FLAG TX MCLK MDATA MLD STAT BLKCK NRST DQSYTXT SMCK PMCK

C7161 0.1

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 ARFDC AVDD2 RFIN RFOUT RFENV CENV LD PD A C B D F E VREF CTRCRS OSCIN AVSS2 SRVMON1 SRVMON0 DVDD1 IODD2 76 77 DVSS2 78 REGON 79 X2 80 X1 81 NTEST 82 D2 83 D1 84 D0 85 D3 86 D4 87 D5 88 D6 89 D7 90 D15 91 D14 92 DRVDD 93 D13 94 D12 95 D11 96 D10 97 D9 98 D8 99 100

C7263 0.1

C7234 0.1

W7010 0 W7009 0 W7008 0 W7006 0

LB7264

LB7262-LB7264 D0GBR00JA008 22 21 20 19 C7253 18 470P W7029 17 0 16 15 14 13 12 11 W7028 C7243 10 0 0.1 9 8 7 6 5 4 3 2 1 62 1 62 2

CN7002

W7016 0

W7011

[50] ARFFB [49] ARFOUT

DVDD2 [76] IODD1 [77]

0

C7235 16V10

W7007 0
62 12

DIGITAL SIGNAL PROCESSOR/ DIGITAL FILTER D/A CONVERTER

IC7001 MN6627954MA SERVO PROCESSOR/

C7233 0.1
62 8 62 9 62 31

C7232 6.3V220

62 7

C7264 0.1

R7253 10

62 4

R7254 62 3 1K C7166 S7201 0.01 REST SW

[26] DVSS1

SDRCK [100]

W7003 W7001 0 0

AGND LCH OUT AGND RCH OUT DGND ST_IN ST_CLK ST_REQ 3.3V DGND LD SW TX 7.5V PGND MCLK MDATA MLD BLKCK STAT RST RESET_SW LOADING

D
TO MAIN CIRCUIT (CN2801) IN SCHEMATIC DIAGRAM - 4

E

C7339 0.018

D3-

D4-

D4+

PGND1 PGND2

D3+

PVCC1 PVCC2

VCC

VREF

F

IN4

IN3

C7335 0.1 C7334 10V220

C7165 10u C7164 10u

14

16

17

18

19

20

21

NC

NC

NC

NC

PC1

D2+

D1+

D2-

D1-

PC2

IN1

13

13

12

11

10

9

8

GND

7

6

5

4

3

2

IN2

NC

NC

NC

NC

IC7002 BA5948FPE2 4 CH DRIVE IC

GND

22

23

24

25

26

27

28

R7339 1k

R7214 470

25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

W7002 W7004 0 0

R7220 1M 1 2 3

C7338 0.056 R7323 3.3k R7325 330 R7331 22k R7315 3.3k

1

W7027 0

62 87 62 86

C7315 0.47

X7201 H2B169500005

F

62 11

G

62 39

62 38

R7335 100 +
62 36

R7332 1k

62 10

G

+ M7301 TRAVERSE MOTOR

62 37

M7302 SPINDLE MOTOR

H 1 2 3 4 5 6 7
65

SA-AK350PL CD SERVO CIRCUIT
8 9 10 11 12 13 14

H

SA-AK350PL

19.2. (B) Main Circuit
1 2 3 4 5 6 7 8 9 10 11 12 13 14

A

SCHEMATIC DIAGRAM - 2

MAIN CIRCUIT

: +B SIGNAL LINE

: CD SIGNAL

: TAPE RECORD SIGNAL LINE
W581 0 R2161 15K C2263 50V1 C2181 1

: TAPE PLAYBACK SIGNAL LINE
R2173 4.7K

: FM/AM SIGNAL LINE

: MAIN SIGNAL LINE

: AUX SIGNAL LINE

: MIC SIGNAL LINE

R2182 C2182 0 1 R2181 R2183 820 2.2k C2175 C2183 3300P 0.22u C2173 0.01 C2174 C2171 0.01 C2172 0.1 C2301 0.056 0.22

MIC

R2172 4.7K

R2301 15K C2302 0.22

B
MIC_MIX C2112 C2212 C2122 C2222 C2132 C2232 C2152 C2252 1 1 1 1 1 1 1 1

Q2311,Q2411 B1ABGC000005 MUTING SWITCH
C2311 1 R2311 470

C2705 1 R2705 3.3k W584 0 R2313 100k C2312 1

IC2804 C0AABB000125 OP AMP
R2703 220K C2703 470P 4 3 C2313 R2315 47P 56K C2314 10P 2 1 C2315 50V22
C1

R2163 56K

C

REF-OUT GV_OUT-R REC-R PRE-VIN-R HB-MIX HB-MIX-OUT HB-FLT-OUT HARMIN HARMOUT HB-ATT-IN HB-ATT-OUT HB-LPF-IN HB-LPF-OUT NC

R2281 820 R2282 C2281 0 1

C2191 50V3.3

W691 0

C2113 6800P

C2702 16V100

D

C2588 0.1

D2583

R2702 1k

C2701 0.01

W579 0

B0BC9R000008 C2583 16V100

C2275 3300P R2273 C2273 4.7k 0.01 R2271 4.7K

QR3105,QR3106 KRC101STA SWITCH QR3106 QR3105

D2191 C2192 R2193 0.1 4.7k C2193 1

R2202 2.2K

C2274 0.01

C2142 1 C2242 1 W619 0

E

W575 0

QR2501 B1GDCFJJ0047 SWITCH QR2502 B1GBCFGN0016 SWITCH
LM_1 +15V

R2508 1k

QR2501
W596 0 W671 0

W685 0 W686 0 W687 0

R2446 3.3k R2447 1

Q2441 R2445 1.5k

47k

R2672 10k

F

CN2803

W661 0

W656 0

+3.3V ASP_CLK ASP_DA

MUTE_A

R2674

AGND

HP_L

HP_R

+15V

IC2872 C0CBAHG00011 VOLTAGE REGULATOR

QR2502

-9V

C2444 C2344 0.47 0.47

R2457 R2357 100k 100k

TO DECK CIRCUIT (CN1305) IN SCHEMATIC DIAGRAM-10

PL 1 MOTOR_H 2 MO_GND 3 R2111 DECK_AD2 4 2.2K MOTOR 9V 5 DECK_AD1 6 R2211 +9V 7 PB_L 8 PB_L 2.2K PB_R 9 PB_R R2112 5.6K A_GND 10 A_GND A_GND 11 REC_IN_L 12 REC_IN_R 13 REC_H 14 BP 15 DMT 16 DVREF 17 VREF-GND 18 DGND 19 +5V 20 PHOTO 21

OUT 3 2 GND VCC 1

C2806 10P

REF_L R2503 +9V REF_R 2.7k C2503 AGND 2 1 R2501 P_GND 3 330k DECK_AD2 1 R2507 Q2501 DECK_AD1 R2504 100k REC_IN_L 100 R2502 REC_IN_R 82k R2505 DMT A_GND 0 DVREF+ U_GND W689 0 REC[59] C2501 Q2501 1 +5V B1ABCF000176 +3.3V LEVEL METER CONTROL SWITCH W592 PHOTO 0 R2203 2.2k REC_L R2103 REC_R 2.2k D2503 B0ADCC000002

R2509 560

R2584 330k R2586 1.2k W678 0

C2805 W580 16V470 0

IC2803 1 42 C1BB00001121 2 41 AUDIO SOUND PROCESSOR 3 40 [42] L-OUT 4 IN-R2 [1] IN-L1 39 [41] NC 5 IN-L3 [2] IN-R1 [40] DATA VCC 38 [3] IN-L2 [39] CLK R-OUT 37 6 IN-R3 7 IN-L4 IC2803 POST-VM-R 36 C2401 0.22u R2401 C2402 15K 8 IN-R4 [32] MID-R2 T-OUT-R 35 C2272 0.22u 0.056 [31] MID-R1 BASS-R2 34 9 IN-L5 [12] IN-R6 [13] GND [30] TRE-R BASS-R1 C2271 0.15 33 10 IN-R5 [14] REF-IN [29] NC 11 IN-L6 32 12 31 W582 30 C2581 13 0 29 16V100 14 C2213 6800P 15 16 17 18 19 20 21 22 23 24 25 26 27 28 C2582 C2195 16V100 R2195 0.47 10k R2102 2.2K R2196 W677 R2204 C3720 0 W675 27K 0 0 10k C2194 R2104 W691 0.15 0 R2283 R2194 27K C3721 100k 100k 0 W667 0 C2283 W674 R2510 0.047 REC_L 0 220 C2509 PL D2191 50V33 MTR[58] REC_R B0ACCK000005
OP-IN OP-OUT GV_OUT-L REC-L PRE-VIN-L SUR1 SUR2 TRE-L MID-L1 MID-L2 BASS-L1 BASS-L2 T-OUT-L POST-VM-L REC_IN_L REC_IN_R C2282 1

56 55 54 53 52 51 50 49 48 47 46 45 44 43

Q2311

R2312 R2355 C2342 10k 270K 1 A_GND R2412 10k

IC2804
6 7 8 C2414 W589 0 R2704 220k C2413 10P C2415 47P R2415 50V22 56K C2704 R2706 C2706 470P D2241 Q2142,Q2242 1 3.3K B0ACCK000005 R2249 R2145 R2245 B1ABCF000176 3.3K 1K R2146 1K AGC CONTROL SWITCH 1K Q2142 R2246 W591 D2241 R2149 3.3K 1K 0 C2412 1 5

TO MAIN SECTION (2/4)

R2413 100k C2411R2455C2442 1 1 270k R2411 Q2411 470

W583 0

C2

Q2242
C2245 16V10 W600 0

W651 0

W597 0

W588 0 R2701 1k W669 0 W670 0

R2247 100k

R2248 6.8k W590 0

MIC MIC_MIX

C6

C2584 220p

R2585 330k

C2585 220p

Q2511 B1GDCFJJ0047 MUTING CONTROL
R2511 560 R2587 1.2k R2512 100k C2511 50V2.2

Q2341,Q2441 B1ABGC000005 HEADPHONE MUTING
R2347 1 R2346 3.3k

R2212 5.6K

IC2872

Q2341

R2341 18 R2345 15k

R2352 18

C7

C2507 0.22

W641 0

L R2344 R2343 R2354 R2353 0 18 0 18 C2341 1000P C2441 1000P R2452 R 18 R2453 R2441 0 18 R2444 R2443 R2454 18 0 18

C9

G
C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29

TO MAIN SECTION (3/4)

H
1/4 3/4 2/4 4/4

SA-AK350PL MAIN CIRCUIT

66

SA-AK350PL

15

16

17

18

19

20

21

22

23

24

25

26

27

28

SCHEMATIC DIAGRAM - 3

MAIN CIRCUIT

A
: +B SIGNAL LINE : TAPE RECORD SIGNAL LINE : MAIN SIGNAL LINE : MIC SIGNAL LINE

MIC_MIX R2335 3.3k R2331 W587 0 0 R2333 6.8k C2333 1 R2334 0 REC_L REF_L 1 F_HOP 2 T-GND 3 MUTE-D-AMP 4 +15V 5 HIGH_L-IN 6 HIGH_R-IN 7 ASP_GND 8 LOW_L-IN 9 LOW_R-IN 10 A_GND 11 SUBW 12 FAN

C3711 1 C3700 R3700 0 0

R3720 0

K3703 0

TO MAIN SECTION (1/4)

C1

R2316 2.2k R2317 10k R2356 180k R2456 180k R2417 10k

CN2809
TO POWER CIRCUIT (CN5102) IN SCHEMATIC DIAGRAM-9
C3701 REF_R 1 R3701 A_GND 1K REC_R +15V W673 R3704 22K 0 K3705 0

R3702 22K

R3714

Q2317,Q2417 B1ABCF000176 MUTING SWITCH Q2317
C2343 0.47

C2331 3300P

C3704 R3706 1 68k C3706 47p 4 3

R3708 68k

B

R2318 100k

R2435 C2431 3.3k 3300P

R2433 6.8k R2431

C2433 10 C2325 16V10 R2323 8.2k R2423 8.2k C2425 16V10

R2434 0 R2326 10K A_GND
R2328 15k

C3708 10p 2 1

0 R2329 C2321 R2321 0 1 3.3K C2323 0.015 C2423 0.015 R2421 0

C3705 R3707 0 0 R3711 47K

IC3700
5 6 7 C3709 10p 8

IC3700 C0ABBB000244 SMT OP AMP IC

C

C2443 0.47

W586 0 R2418 100k R2429 3.3K C2421 1

C2

R2416 2.2k

Q2417

R2426 10K

R2428 15k

C3712 C3710 100 0.1 W654 R3712 47K 0

C3707 47p R3709 68k

C2943 50V2.2

D

C6

E
C7

F

TO MAIN SECTION (4/4)
T_GND F_HOP MUTE_D_AMP +15V

G

C9

FAN

1/4
C30

2/4 4/4

3/4

SA-AK350PL MAIN CIRCUIT

H

67

SA-AK350PL

I

SCHEMATIC DIAGRAM - 4

MAIN CIRCUIT
C18 C19 C20 C21 C22 C23 C24

: +B SIGNAL LINE

: CD SIGNAL LINE

: FM/AM SIGNAL LINE
C29

: MAIN SIGNAL LINE

: AUX SIGNAL LINE

REC[59] MTR[58] PHOTO PL UP_SENSOR BOTTOM_SW DMT CE VOL_LED

HOME_SW RESTSW MCLK MDATA MLD STATUS

R2285 R2284 0 0
C3114 C3116 560P 560P W688 C3113 0 220PR2222 3.3k

W658 0

A_GND H.BASS_LED VCC

VREF+ FL_CLK FL_DA FL_CS

VREF+

+3.3V

C25

C26

C27 C28

R2805 10K

CE D1

R2121 3.3k R2122 3.3k

C2121 3300p
C2221 3300p

TO MAIN SECTION (1/4)
R2673 6.8k R2286 0 W629 0 R2676 0 PLL_CLK A_GND D0 R2826 R2827 47k 47k

R2894 47k W617 0 W684 0

D2811 B0ADCJ000020 1 D2813 B0ACCK000005 3 2

+5V +3.3V +15V IDCDET 8 7 6 5

J

R2808

W646

TO TUNER PACK J3CCBB000009

R2825 100

R2912 R2914 R2916

R2844

R2832

R2831

R2677 270

HOME_SW /RESTSW MCLK MDATA_OUT MLD STAUTS USB_REQ V.LED_CS FL_CLK FL_DOUT FL_CS D-PORT_RES1 D-PORT_RES2 D-PORT_STOP D-PROT_F-SKIP D-PORT_R-SKIP Vss H. BASS_LED VCC PAM CS MMOD0 REC MTR PHOTO PL UP_SENSOR BOTTOM_SW DMT CE VOL_LED

22

L

LM_1 D-PORT DET1 D-PORT DET2 RDS_DAT RDS_CLK I-POD LINK F_HOP BYTE CNVSS Xcin Xcout /RESET Xout Vss Xin Vcc /NMI RMT BLKCK SYNC DO D1 S/WOOFER CS SW_LVL1 SW_LVL2 ASP_DAT ASP_CLK FL_CS PLL_DATA PLL_CLK

TO CD SERVO CIRCUIT (CN7002) IN SCHEMATIC DIAGRAM-1

R2924

R2850

R2927 1K 0 0

W628 0

W649 0

CN2801 JK2803

C2006 1000P

C2149 100p

LM_1 DLINKDET1 DLINKDET2

W676 0

R2242 2.7k

PLL_CLK USB_SDA

ASP_DA ASP_CLK VREF+

DVREF+

R3209 10k

1

A_GND

lRESET

CNVSS

RMT BLKCK SYNC D0 D1

M_E U_GND

F_HOP

L4000 D0GBR000JA008 VREF+ W663 VCC 0 D4000 B0JAME000114

L4001 D0GBr000JA008

N

2

C2140 1000p

R2142 2.7k

C2249 100p

U_GND

C4000 0.1

AUX IN

C2981 1000p C2983 1000p 4 R2241 12k 3 C2240 R2141 12k 1000p

IN GND STBY NC OUT

R2151 R2251 W614 0

STATUS R2922 CD 10k _RESET RESTSW A_GND PA_IN_L PA_IN_R

W606 0

10k

1

W639 0

R2801 100 R2802 10k

M

W638 CD_GND 1 0 C2985 1000P R2232 L 2 3.3k A_GND 3 R 4 R2231 CD_GND 5 3.3k ST_IN 6 C2986 ST_CLK 7 1000P ST_REQ 8 L2901 CD_3.3V 9 G0C101JA0052 CD_GND 10 LD_SW 11 TX 12 +7.5V 13 U_GND 14 MCLK 15 MDATA 16 MLD 17 BLKCK 18 STAT 19 /RST 20 W613 0 /REST_SW 21 LOADING 22
C2901 0.1

C2675 100p C2676 16V220

CD_RESET CLOSE_SW OPEN_SW CHG_CW D2603 B0BC9R000008 CHG_CCW ST_SW A_GND PLAY_SW ST_IN CHG_PLR[88] CD_3.3V

W603 0 W620 0

R2918 1K

BLKCK

R3213

R2921 4.7k

U_GND MCLK MDATA MLD +3.3V

C2984 100p

80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 81 50 W634 82 49 0 83 48 84 CW DCDET 47 PCONT/EFP/CS 46 85 CCW 86 ST_SW [81] CD_RST XM_ANT_REV 45 [82] CLOSE_SW PLAY_SW [83] OPEN_SW 87 XM_DAC_RESET 44 88 PLUNGER EE_DAT 43 [50] STANDBY [49] XM_PCONT 89 REG EE_CLK 42 IC2801 V_JOG_A [48] XM_RST EE_CS/EFP/EPM 41 90 VOL_JOG C2CBYY000482 MUTE_A 40 91 D-PORT_PCONT MICROPROCESSOR R2841 100 KEY3 92 KEY3 [97] DECK_AD2 MUTE_DA 39 KEY2 R2842 100 93 KEY2 [98] Vref TERR 38 [99] Avcc [31] USB_SDA(TxD) XM_I2S_RATE 37 R2843 100 KEY1 94 KEY1 [100] DEMO_SET [32] USB_SCL(RxD) DECK_AD1 W633 0 [33] VERR 95 DECK AD1 XM_RX_IN 36 C2954 96 AVSS XM_TX_OUT 35 DECK_AD2 560P 97 XM_MUTE(BUSY) 34 VREF+ 33 98 VCC C2953 99 32 560P W608 100 31 0 R2846 W647 R2848 100k 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 10K 0 R3211 100 W610 W598 R2849 W609 0 0 4.7K 0 A_GND R3212 C2821 100 W679 W607 IC4000 0 0 W635 100p C0DBZGC00067 W632 W601 0 0 IC4000 3.3V REGULATOR 0 R2833 R2834 R2835 R2836 R2837 R2838 R2839 R2840 100 100 100 100 100 100 100 100
W577 0 100

R2830

R2829

W612 0

+15V

R2132 3.3k

W644 0 W659 W657 0 0

W636 W662 0 0

C2874 330p

Q3601

R2871

47k

47k

47k

47k

R2131 3.3k

R2853 100

R2854 100

R2818 10k

C2871 330p

K

CE 1 D1 2 CLK 3 D0 4 GND 5 L-OUT 6 VCC 7 R-OUT 8 VSM 9 FM DET/RDS 10 CN3601 W599 0

R2828 47k
0

W660 100

0

W645 0

TO MAIN SECTION (4/4)

R2804 100

W593 0 R2817 10k R2845 100

R2816 100 R2815 100

C3112 220P

R2221 3.3k

W653 0 W626 0

4.7K 4.7K 4.7K

2.2K

T_GND

C2956 100P

R2873 22k

R2874 4.7k

22k

W664 0

C2678 0.01

Q3601 2SC3940A0A SWITCH

R3303 10k

IC2871 E-EPROM IC (NOT SUPPLIED)
C2872 0.022u

IC2871
1 2 3 4 NC NC VCC GND EE_CS EE_CLKEE_DAT

U_GND STANDBY IDCDET PCONT

MUTE_A MUTE_D_AMP W643 0

1K

USB_RST USB_SCL
C10 C11 C12 C13 C14 C15 C16

SYS6V

1

2

3

4

5 C4001 0.022

R2812 100K

VCC

O

W616 0 W625 0 W637 0 W655 0 W624 0

W602 0

W642 0

C17

1/4

2/4 4/4

P

3/4

SA-AK350PL MAIN CIRCUIT
13 14

1

2

3

4

5

6

7
68

8

9

10

11

12

SA-AK350PL

SCHEMATIC DIAGRAM - 5

MAIN CIRCUIT

: +B SIGNAL LINE

: MAIN SIGNAL LINE

: MIC SIGNAL LINE

: AUX SIGNAL LINE
C30

I

TO MAIN SECTION (2/4)

IDCDET FAN

C2944 100P R2944 4.7K

R2945 10k

C2945 16V47

R2943 10K

R2942 5.6K

R2941 10k C2941 50V33

TO MAIN SECTION (3/4)

MOT_12V

Q2942

C2940 0.1 R2940 820k

FAN MOTOR ON/OFF SWITCH 1 + 2 -

Q2942 B1ACKD000006

CN2810

TO FAN

J

D2946 B0ADCJ000020

3 2 1 R2946 56k

C2947 6.3V100P

Q2948

W622 0

R2949 47K R2948 100

47K Q2949 C2948 10V220u

W621 0

Q2943

R2939

Q2943 B1ABCF000176 FAN SUPPLY
CONTROL SWITCH

Q2948,Q2949 B1ABCF000176 DC DETECT SWITCH

K

U_GND W623 +3.3V 0 -9V

R2947 27 12 3.3V 11 -VCC 10 XM5.3V 9 MOT_12V 8 STANDBY 7 /DCDET 6 3.3V 5 +5V 4 PCONT 3 UP_GND 2 FL_GND 1 P-GND

W595 0

W618 0 W668 0

W631 0
C10 C11 C12 C13 C14 C15

W666 0 VCC

W576 0 MOT_12V STANDBY IDCDET CD_3.3V (cater) +5V PCONT U_GND C2753 0.1 P_GND

TO POWER CIRCUIT (CN5103) IN SCHEMATIC DIAGRAM-9

L

R2852 R2881 220 X2802 H2B100500004 1 3 2

22k

CN2808

R2886 1M R2883 C2883 330k 22p

R2851 47k

X2801

C16

VOL_LED V_JOG_A A_GND

MOT_12V

R2937 10k MOT_12V

W611Q2936 0

W648 0

FL_CS FL_DA FL_CLK W650 W627 W652 0 0 0 H.BASS_LED KEY3 KEY2 KEY1 W681 W682 0 0 U_GND RMT VREF+ SYNC PCONT SYS6V

D2941 W672 0 CHG_CCW CHG_CW U_GND CD8.5V OME_SW ST_SW OPEN_SW CLOSE_SW +3.3V A_GND PLAY_SW

UP_SENSOR BOTTOM_SW

CHG_PLR[88] +15V MIC 0 0 A_GND HP_L A_GND HP_R U_GND +3.3V PA_IN_L A_GND PA_IN_R MOT_12V

C17

A_GND

U_GND

C2882 X2801 H0A327200097 18p W604 0

D2803

R2882 10M

D2803 B0ACCK000005 C2854 6.3V 470 W594 0 A_GND lRESET CNVSS W605 0 VREF+ VCC C2803 XM_MUTE(BUSY) 1 C2802 U_GND 3.3 USB_RST USB_SCL_RXD Q2803 USB_SDA_TXD B1GBCFJJ0051 RESET (MICRO-P) SWITCH C2853 0.1

1 2 3 4 5 6 7 8

/RESET CNVSS VCC BUSY EFM CLK RXD TXD

M
SOFTWARE WRITING

N

B0EAKM000117 R2936

D2940

D2936

D2939

D2937-D2941 B0EAKM000117

1k

D2938

D2937

Q2937
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

W615 0

CCW CW U_GND VC_8V HOME_SW ST-SW OPEN_SW CAM_SENSOR 3.3V D_GND PLAY_SW PLUNGER UP_SENSOR BOTTOM_SW SPEED

+15V MIC MIC_GND HP_L HP_GND HP_R DGND SW5V PA_IN_L PA_IN_GND PA_IN_R MOT10V SW_LED VOL_LED J_VOLA NC FL_RST FL_CS FL_DOUT FL_CLK H.BASS_LED KEY3 KEY2 KEY1 U_GND RMT +VREF SYNC PCONT SYS6V

Q2936 B1ACKD000006 CD SUPPLY Q2937 B1GBCFJJ0051 CHANGER PLUNGER
ON/OFF SWITCH CONTROL SWITCH

C2930 10P

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

W630 W640

O CN28