3-1. CABINET (FRONT) SUB ASSY, CABINET (REAR) SUB ASSY
Cabinet (Front) sub ASSY Cabinet (Rear) sub ASSY
5 1 2 3 Screws (+BV 3x14)
7 Wire , parallel (11 core) (Main board : CN407) 6 CN313 (5 Pin) (Main board ) 8 Lead wire (Lug, speaker section)
4 Screws (+BVTT 3x6)
3 Screws (+BV 3x14)
7
3-2. CONTROL (L) BOARD
Control (L) board
1 Screws (+B 2.6x8)
2
Cabinet (Front) sub ASSY
3-3. CONTROL (R) BOARD
1 Screws (+B 2.6x8)
2
Control (R) board Cabinet (Front) sub ASSY
3-4. CONTROL (F) BOARD, JOG BOARD
1 Screws (+B 2.6x8)
2
Plate (JOG) , retainer
4
Cabinet (Front) sub ASSY
3 Remove solder
Control (F) board JOG board
8
3-5. BATT BOARD
Cabinet (Rear) sub ASSY
Chassis, Transformer
2
1 Screws (+BV 3x10)
BATT board
3-6. POWER BOARD
Cabinet (Rear) sub ASSY
1 Screws (+BV 3x20)
Power transformer Power board
5 4 Screws (+BV 4x12) 3
2 Screws (+BV 3x10)
Chassis, Transformer
3-7. TUNER BOARD, ANTENNA SW BOARD
1 Screws (+BV 3x14)
6 Screws (+BV 3x10)
Antenna SW board
3 2 Screws (+BV 3x10) 5
Cabinet (Rear) sub ASSY
Chassis (TU)
2 Screw (+BV 3x10)
Tuner board
4 Screws (+BV 3x10)
9
3-8. CENTER BLOCK SECTION
1 Screws (+BV 3x14)
Center Block Section
3
Cabinet (Rear) sub ASSY
2 Screws (+BV 3x12)
3-9. CABINET (UPPER), CHASSIS (MAIN)
Cabinet (Upper)
4 3 Claws 1 Wire , parallel (8 core) (Control sw board : CN550)
2 Wire , parallel (16 core) (CD optical pick-up) 3 Claw
3 Claw
Chassis (Main)
10
3-10. OPTICAL PICK-UP ASSY, CD MOTOR BOARD
Cabinet (Upper)
2
CD Optical pick-up ASSY
1 Screws (+PWH 2.6x8) 4
1 Screws (+PWH 2.6x8)
CD Motor board
3 Remove solder
3-11. CONTROL SW BOARD
3-12. MOTOR BOARD, BELT, MOTOR (M703)
Cabinet (Upper)
Cabinet (Upper)
2
5
Motor (M703) (Door open/close)
Chassis, Motor
Control SW board
1 Screws (+B 2.6x8)
2
Motor board
4 Screws (+B 3x10) 3 Belt 6 Screws (+B 2.6x4) 1 Screws (+B 3x10)
11
3-13. LCD BOARD, BL BOARD
4 Screws (+B 2.6x4) 6 Screw (+BV 3x10) 2 3 LCD Flexible board 5 7
LCD board BL board
Chassis (Main)
Holder LCD
1 Screws (+B 2.6x8)
3-14. AUDIO BOARD
1 Screws (+BV 3x10)
Audio board
2
Chassis (Main)
12
3-15. LINE BOARD
Chassis (Main)
3 Screw (+BVTT 2.6x6)
2
Bracket (Line)
Main board Line board
4
Bottom Plate
1 Screws (+BV 3x10)
3-16. MAIN BOARD
2 Screw (+BVTT 2.6x6) 1 Screws (+PTPWH 2.6x5) 1 Screw (+BVTT 2.6x6)
Bracket (HP)
3
Main board
4
Bottom Plate
13
3-17. MD BLOCK ASSY
Chassis (Main)
MD Block ASSY
3
1 Screws (+BVTP 2.6x8) 2 Screws (+BVTP 2.6x8)
1 Screws (+BVTP 2.6x8)
2 Screws (+BVTP 2.6x8)
3-18. DG BOARD
MD Block ASSY
3 Wire , parallel (26 core)
5 3 Wire , parallel (29 core)
DG board
4 Screws (+BVTP 2.6x8) 3 Wire , parallel (19 core) 2 4 Screw (+BVTP 2.6x8)
Case (Rear) , MD shield
1 Screws (+BVTP 2.6x8) 1 Screws (+BVTP 2.6x8)
14
3-19. CHASSIS (MD)
3 Screws (+BVTP 2.6x8) 3 Screws (+BVTP 2.6x8)
Case (Upper) , MD shield
3 Screws (+BVTP 2.6x8) 4 5 Screws (+BVTT 2x3) 6
Chassis (MD)
6 7 5 Screw (+BVTT 2x3)
Case (Lower) , MD shield
2
MD Mechanism Block
1 Screws (+BVTP 2.6x8) 1 Screws (+BVTP 2.6x8)
3-20. BD BOARD
MD Mechanism Block
1 Wire , parallel (15 core)
2 Head flexible Board 5 OP Relay flexible board 4
BD board
3 Screw (+B 2x3)
15
3-21. SUB CHASSIS ASSY, MD MECHANISM DECK
1 Step screws
1 Step screws
Insulators
Insulators
A
OK MD mechanism deck
A A 2
NG
When mounting, make sure that A sets in the correct position.
SUB Chassis ASSY
3-22. SHUTTER ASSY
1 Washer
Sub chassis ASSY
2 Shaft (shutter)
Shutter ASSY
3 Shutter ASSY
Shaft (lid) Hole B Shaft (shutter) Hole A
First mount the shaft (shutter) to hole A sets in the diagram, then mount the shaft (lid) to hole B
16
3-23. SW BOARD
SW board
1 Claws 2 1 Claws
1 Claws
MD mechanism deck
3-24. " HEAD, OVER WRITE ", SLIDER ASSY
2 Screw (M1.7x6)
Head, Over write
1 Screw (M1.7x2) 6 Position the gear shaft (L) as ahown in the diagram
7 Claw
Slider ASSY
3
Retainer
7 Claw
4 Screw (M1.7x2)
5 Retainer (Gear)
7 While removing the claw(2 locations), remove the slider assembly in direction of the arrow.
MD mechanism deck
17
r
CAUTION DURING SLIDER ASSY ASSEMBLY
Slider ASSY
Mount the A of the lever (head up) so that it passes above the slider ASSY.
OK
A
NG
Take caution as to not damage the detection switch
MD mechanism deck
3-25. MD OPTICAL PICK-UP BLOCK
MD Optical pick-up block
3
2
Shaft (Main shaft)
MD mechanism deck
1 Remove the lever
18
SECTION 4 TEST MODE
4-1. CAUTIONS WHEN USING THE TEST MODE
1 Check to make sure the inserted disk is completed stopped before removing since loading related operations will operate regardless of the Test mode operation. The rotation of the inserted disk will not stop even when pressing the MD EJECT button during continuous playback and continuous recording. In this case, the disk will be ejected while still in motion. Always press the NO/CANCEL button and check to see that the disk has stopped turning before pressing the MD EJECT button. 2 In the Test mode, detection of the write-protect tab is not executed. For this reason, pressing the REC button in modes where the recording laser is emitted (see 4-1-1) will delete the recorded contents regardless of the tab position. When using a disk in the Test mode which its contents must not be deleted, avoid entering the Continuous Recording mode and Traverse Adjustment mode. 4-1-1. Modes which the record laser is emitted and button operations · Continuous Recording mode (CREC MODE) · Traverse Adjustment mode (EFBAL ADJUST) · Laser Power Adjustment mode (LDPWR ADJUST) · Laser Power Check mode (LDPWR CHECK) · Traverse (MO) check (EF MO CHECK) · Traverse (MO) adjustment (EF MO ADJUST) · When pressing the REC button
4-5. SELECTING THE TEST MODE
There are 9 types of test modes (see table below). Turning the AMS dial clockwise switches modes shown in the table in the order from top to bottom. Turning the AMS dial counterclockwise switches modes shown in the table in the reverse order.
Display TEMP ADJUST LDPWR ADJUST LDPWR CHECK EF BAL ADJUST FBIAS ADJUST FBIAS CHECK CPLAY MODE CREC MODE EEP MODE Description Temperature compensation offset adjustment Laser power adjustment Laser power check Traverse adjustment Focus bias adjustment Focus bias check Continuous playback mode Continuous recording mode Non-volatile storage memory control
· For details on each adjustment mode, see respective items of SECTION 5. ADJUSTMENT · If you have accidently entered another mode, press the NO/CANCEL button to exit. · The EEP MODE is not used during servicing. Thus, details on this mode are not given. If this mode is accidently entered, exit immediately by pressing the NO/CANCEL button as the unit may not operate correctly if the non-volatile storage memory being overwritten. 4-5-1. Operating in the Continuous Playback mode 1. Entering the Continuous Playback mode 1 Insert a disk into the unit (either recordable or playback disk) 2 Turn the AMS dial until "CPLAY MODE" is displayed. 3 Press the YES/ENTER button. The display will change to "CPLAY IN". 4 When accessing is completed, the display will change to "C1= AD = ".
" displayed indicate the error rate and Note : The numbers of " "ADER".
4-2. TEST MODE SETTINGS
MD Test mode : Press and hold the EDIT button and BASS/TREBLE button, then press MD ^ n MD p n MD ^ n MD p. CD Test mode : Press and hold the EDIT button and BASS/TREBLE button, then press CD ^ n CD p n CD ^ n CD p. Display Test mode : Press and hold the EDIT button and BASS/TREBLE button, then press BAND n LINE n BAND n LINE (FUNCTION is LINE).
Note 1 : Each test mode can be entered regardless of whether the
power is on or off. However, it is not possible to enter the test mode of the particular function being operated. For example, it its not possible to enter the CD Test mode when the CD is in function.
2. Changing the playback location 1 Pressing the YES/ENTER button during continuous playback will change the display in the following manner, enabling change in the playback location. "CPLAY MID" n "CPLAY OUT" n "CPLAY IN" 2 When accessing is completed, the display will change to "C1= AD = "ADER". 3. Exiting the Continuous Playback mode 1 Press the NO/CANCEL button. The display will change to "CPLAY MODE". 2 To remove the disk, press the MD EJECT button.
Note : The playback initiate addresses of IN, MID and OUT are indicated below. To display the playback position, press the DISPLAY button and "CPLAY( )". IN 40h cluster MID 300h cluster OUT 700h cluster
4-3. RELEASING THE TEST MODE
Press the RESET button located on the bottom.
".
Note : The numbers of " " displayed indicate the error rate and
4-4. BASIC OPERATIONS OF THE TEST MODE
All operations are made using the AMS dial, YES/ENTER button and NO/CANCEL button. The functions of each button are as follows:
Function Name AMS dial YES/ENTER button NO/CANCEL button Functions Used to change parameters and modes Used to advance and confirm Used to return and cancel
19
4-5-2. Operating in the Continuous Recording mode 1. Entering the Continuous Recording mode 1 Insert a disk that may be recorded into the unit (see Note 3) 2 Turn the AMS dial until "CREC MODE" is displayed. 3 Press the YES/ENTER button. The display will change to "CREC MID". 4 When accessing is completed, the display will change to "CREC ( )". Note : The numbers of " " displayed indicate the record position address. 2. Changing the recording location 1 Pressing the YES button during continuous recording will change the display in the following manner, enabling change in the recording location. During location change, the REC indicator will be off. "CPLAY MID" n "CPLAY OUT" n "CPLAY IN" 2 When accessing is completed, the display will change to )" and the REC indicator will light. "CREC ( Note : The numbers of " " displayed indicate the record position address. 3. Exiting the Continuous Recording mode 1 Press the NO/CANCEL button. The display will change to "CREC MODE" and the REC indicator will turn off. 2 To remove the disk, press the MD EJECT button. Note 1 : The record initiate addresses of IN, MID and OUT are indicated below. To display the record position, press )" . the DISPLAY button and "CREC ( IN 40h cluster MID 300h cluster OUT 700h cluster Note 2 : The NO/CANCEL button can be used at anytime to stop recording. Note 3 : Detection for the write-protect tab is not executed when in the test mode. Do not enter the Continuous Recording mode with a disk you do not wish to have deleted. Note 4 : Do not continuously record for more than 5 minutes. Note 5 : Make sure no vibration is applied to the unit during continuous recording. 4-5-3. Non-volatile storage memory mode (EEP mode) This is the mode to read and write the contents of the non-volatile storage memory. This mode is not used for servicing. If you accidently enter this mode, exit immediately by pressing the NO/CANCEL button.
4-7. TEST MODE DISPLAY
The display will switch in the following sequence every time the DISPLAY button is pressed.
Mode display Error rate display Address display Auto-gain display (not used for servicing) [00] [69] [3A] display (not used for servicing)
1. Mode display Displays such information as "TEMP ADJUST" and "CPLAY MODE". 2. Error rate display The error rate is displayed using the following format. C1=C1ER AD=ADER 3. Address display The address is displayed using the following format (MO : recordable disk, CD : playback disk) Switched between pit and groove every time the EDIT and SYNCHRO REC button is pressed h = S = (MO pit and CD) h = a = (MO groove) h = : header address S = : SUBQ address a = : ATIP address Note : "" is displayed when servo is off. 4. Auto-gain display (not used for servicing) The auto-gain is displayed using the following format. AGF = @@ T = ## [&&] @@ : focus servo gain coefficient ## : tracking servo gain coefficient && : displays [OK], [NG] or [ ]. [ ] indicates that convergence is incomplete Definitions of other displays
Display SHUF P REC, SHUF TOC EDIT DIGITAL TRACK DISC mark DATE Description Indicator ON Indicator OFF Continuous playback in Disk stopped (CLV : OFF) operation (CLV : ON) Tracking servo OFF Tracking servo ON Recording mode ON Recording mode OFF ABCD adjustment completed (Flashing) Focus OK Focus auto-gain OK Tracking auto-gain NG Pit Groove High reflection Low reflection CLV-S CLV-A
4-6. FUNCTIONS OF OTHER BUTTONS
Function Name EDIT + ^ EDIT + p ) 0 EDIT + REC EDIT + SYNCHRO REC EDIT + SHUF/PGM DISPLAY MD EJECT RESET Main Description Continuous playback when pressed during disk is stopped. Tracking servo ON/OFF when pressed during continuous playback Stopping of continuous recording/playback The thread moves outward while the button is pressed The thread moves inward while the button is pressed Record ON/OFF during continuous playback Switched between pit and groove every time the button is pressed Spindle servo mode switch (CLV S N n CLV A) Display contents are switched every time the button is pressed Eject disk Exit the test mode
20
SECTION 5 ADJUSTMENTS
MD SECTION 5-1. CAUTION WHEN CHECKING LASER DIODE EMISSION
Never look from directly above when checking the laser diode emission during adjustment as failure to do so may result in loss of eyesight.
5-4. CREATING A CONTINUOUS RECORDING DISK
· This disk is used during focus bias adjustment and error rate check. The procedure for creating a continuous recording disk is as follows. 1. Insert a disk (any commercially available blank disk). 2. Turn the AMS dial until "CREC MODE" is displayed. 3. Press the YES/ENTER button to display "CREC MID". "CREC(0300)" will be displayed for an instant and recording will begin. 4. Complete recording within 5 minutes. 5. Press the NO/CANCEL button to stop recording. 6. Press the MD EJECT button to remove the disk. A continuously recorded disk can be created by following the procedure above for focus bias adjustment and error rate check.
Note: Take caution as to not apply vibration to the unit during con-
5-2. CAUTIONS WHEN HANDLING THE OPTICAL PICK-UP (KMS-260A)
The laser diode within the optical pick-up is extremely vulnerable to static electricity. When handling, bridge the laser tap of the flexible board on the optical pick-up with solder. When removing the connector, first bridge the laser tap with solder. Furthermore, do not remove the soldered bridge before reconnecting. In addition, take sufficient measures when working to prevent electrostatic damage. Take caution when handling the flexible board since it is easily torn.
tinuous recording.
Pick-up Flexible board
5-5. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT
The temperature data at the time is saved in the non-volatile storage memory as the standard data of 25°C.
Notes:
Laser tap
1. Do not make this adjustment under normal conditions. 2. Perform this adjustment in an environment with ambient temperature between 22 to 28°C. Furthermore, make the adjustment immediately after turning on the power when the internal temperature and ambient temperature are between 22 to 28°C. 3. After D101 replacement, perform the adjustment after the part has ample time to adjust to the ambient temperature. Procedure: 1. Turn the AMS dial until " TEMP ADJUST " is displayed. 2. Press the YES/ENTER button and select the TEMP ADJUST mode. 3. " TEMP= " and the current temperature data will be displayed. 4. To save the data: press the YES/ENTER button To not save the data: press the NO/CANCEL button 5. After pressing the YES/ENTER button, " TEMP= SAVE " will be displayed momentarily and the display will then return to " TEMP ADJUST ". The display will immediately return to " TEMP ADJUST " when pressing the NO/CANCEL button. Specified values: The value of TEMP= must be within the range of E0-EF, F0FF, 00-0F, 10-1F or 20-2F.
5-3. CAUTIONS DURING ADJUSTMENT
1) After replacing the following parts, make adjustments and checks for the table items where indicated with a O in the order given. Optical BD board pickup IC171 D101 IC101,IC121,IC192
1. Temperature compensation offset adjustment 2. Laser power adjustment 3. Traverse adjustment 4. Focus bias adjustment 5. Error rate check X O O O O O O O O O O X X X X O O O O O
2) Perform adjustments in the test mode. Exit the test mode when completed with adjustment. 2) Perform adjustments in the order given. 3) Use the following jig and measuring equipment: · Check disk (MD) TDYS-I (Part no : 4-963-646-01) · Laser power meter LPM-8001 (Part no : J-2501-046-A) · Oscilloscope (perform measurement after calibrating the probe) · Digital voltmeter · Thermometer · BD board waveform checking jig (part no : J-2501-124-A) 5) When looking at multiple signals using oscilloscope, etc., make sure VC and GND are not connected within the oscilloscope. Failure to do so will short circuit VC and GND. 6) Using the special jig enables checking of the waveform without soldering (see page 4 of Service Notes).
21
5-6. LASER POWER ADJUSTMENT
Connections:
Laser power meter
Specified values: Laser power meter reading : 6.97.1mW Digital voltmeter reading : ±10% the value on the label of the optical pickup.
(Optical pick-up label)
KMS 260A
Optical pick-up objective lens Digital voltmeter
27X40 B0825
In this case, Iop = 82.5mA Iop(mA) = digital voltmeter reading (mV)/1() 10. Press the NO/CANCEL button to display " LDPWR CHECK " and stop laser emission. (The NO/CANCEL button can be used at anytime to stop laser emission)
CN110 5 pin (I+3V) CN110 4 pin (IOP)
[BD BOARD] (SIDE A)
5-7. TRAVERSE ADJUSTMENT
Connection:
Oscilloscope
CN110 3 pin (TEO) CN110 2 pin (VC) VOLT/DIV : 0.5V TIME/DIV : 10msec Input: DC mode
[BD BOARD] (SIDE A)
Procedure: 1. Insert the laser power meter into the disk loading port and set atop the objective lens of the optical pickup (if this cannot be done successfully, shift the optical pickup using the 0 and ) buttons). Connect the digital voltmeter to the CN110 5 pin (I+3V) and CN110 4 pin (IOP). 2. Turn the AMS dial until " LDPWR ADJUST " is displayed. (Laser power: adjustment purposes) 3. Press the YES/ENTER button once to display " LD 0.9mW $ ". 4. Turn the AMS dial so that the laser power meter reading is between 0.86 0.92mW. After setting the range dial of the laser power meter to 10mW, press the YES/ENTER button to save the adjustment result to the non-volatile storage memory (at this time, " LD SAVE $ " will be displayed for an instant). 5. Next, " LD 7.0mW $ " will be displayed. 6. Turn the AMS dial so that the laser power meter reading is between 6.9 7.1mW, then press the YES/ENTER button to save the adjustment result (at this time, " LD SAVE $ " will be displayed for an instant). Note: Do not emit the 7.0mW emission more than 15 seconds continuously. 7. Next, turn the AMS dial until " LDPWR CHECK " is displayed. 8. Press the YES/ENTER button once to display " LD 0.9mW $ ". At this time, check to see that the laser power meter reading is between 0.85 0.91mW. 9. Next, press the YES/ENTER button once more to display " LD 7.0mW $ ". At this time check to see that the laser power meter and digital voltmeter reading comply with the specified values.
Procedure: 1. Connect the oscilloscope to the CN110 3 pin (TEO) and CN110 2 pin (VC) of the BD board. 2. Insert a disk (any commercially available disk) that may be recorded on (see Note 1). 3. Press the 0 or ) button to shift the optical pick-up to the outer edge of the pit. 4. Turn the AMS dial until " EFBAL ADJUST " is displayed. 5. Press the YES/ENTER button to display " EFB= MO-R ". (The unit will be in the condition of: laser power READ power, focus servo ON, tracking servo OFF and spindle (S) servo ON.) 6. Turn the AMS dial so that the waveform on the oscilloscope is that of the specified value (turning the AMS dial will change the numbers of " EFB= " as well as the waveform). During this adjustment, the waveform changes for approximately every 2%. Adjust the waveform closest to the specified value. (read power traverse adjustment)
(Traverse waveform)
A VC B Specification: A=B
22
7. Press the YES/ENTER button to save the adjustment result to the non-volatile storage memory (at this time " EFB= SAVE " will be displayed for an instant, then " EFB= MO-W " will be displayed). 8. Turn the AMS dial so that the waveform on the oscilloscope is that of the specified value (turning the AMS dial will change the numbers of " EFB= " as well as the waveform). During this adjustment, the waveform changes for approximately every 2%. Adjust the waveform closest to the specified value. (write power traverse adjustment)
(Traverse waveform)
18. Press the MD EJECT button to remove the check disk (MD) TDYS-1.
Note 1: When using a pre-recorded disk for adjustment, data will
be deleted during MO write.
Note 2: If the traverse waveform is hard to see, reconnect the
oscilloscope as shown below for easier view.
Oscilloscope 330k 10pF
CN110 3 pin (TEO)
CN110 2 pin (VC)
A
[BD BOARD] (SIDE A)
VC B Specification: A=B
9. Press the YES/ENTER button to save the adjustment result to the non-volatile storage memory (at this time " EFB= SAVE " will be displayed for an instant). 10 " EFB= MO-P " will then be displayed and the servo will be activated after the optical pickup is automatically shifted to the inner edge of the pit. 11. At this time, turn the AMS dial so that the waveform on the oscilloscope is that of the specified value. During this adjustment, the waveform changes for approximately every 2%. Adjust the waveform closest to the specified value.
(Traverse waveform)
5-8. FOCUS BIAS ADJUSTMENT
Procedure: 1. Insert a continuously recorded disk (see 5-4. Creating a continuous recording disk). 2. Turn the AMS dial until "CPLAY MODE" is displayed. 3. Press the YES/ENTER button to display "CPLAY MID". 4. When "C1= AD= " is displayed, press the NO/CANCEL button. 5. Turn the AMS dial until "FBIAS ADJUST" is displayed. 6. Press the YES/ENTER button to display " / a= ". The first 4 digits indicate the C1 error rate, the 2 digits following "/" indicate ADER and the 2 digits following "a=" indicate the focus bias volume. 7. Turn the AMS dial clockwise and search the focus bias volume closest to the C1 error rate of 220 (see Note 2). 8. Press the YES/ENTER button to display " / b= ". 9. Turn the AMS dial counterclockwise and search the focus bias volume which is the C1 error rate of 220. 10. Press the YES/ENTER button to display " / c= ". 11. Press the YES/ENTER button after making sure that the C1 error rate is below 50 and ADER is 00. 12. Press the YES/ENTER button if the value indicated in the " - ( )" display is more than 20. Otherwise, press the NO/CANCEL button and repeat procedure from step 2. 13.Press the MD EJECT button to remove the continuously recorded disk.
Note 1: The relationship of the C1 error and focus bias volume is
A VC B Specification: A=B
12. Press the YES/ENTER button to save the adjustment result to the non-volatile storage memory (at this time " EFB= SAVE " will be displayed for an instant). "EFBAL CD" will then be displayed and the rotation of the disk will automatically stop. 13. Press the MD EJECT button to remove the disk. 14. Insert the check disk (MD) TDYS-1. 15. Press the YES/ENTER button to display " EFB= CD ". The servo will automatically be activated. 16. Turn the AMS dial so that the waveform on the oscilloscope is that of the specified value. During this adjustment, the waveform changes for approximately every 2%. Adjust the waveform closest to the specified value.
(Traverse waveform)
A VC B Specification: A=B
17. Press the YES/ENTER button to save the adjustment result to the non-volatile storage memory (at this time "EFB= SAVE" will be displayed for an instant). "EFBAL ADJUST" will then be displayed.
shown in the diagram below. Find points a and b shown in the diagram by following the procedure above. The met focal point C is found by automatic calculation. Note 2: The C1 error rate fluctuates. Thus, make the adjustment using the average value.
23
C1 error 220
CD SECTION
1. Enter the CD Test mode (see page 19)
Focus bias volume (F, BIAS) b c a
88 07 00 3A0
The above is the default display. Pressing the ^ button will rotate the CD and pressing the YES/ ENTER button once more will output sounds. Pressing the YES/ENTER button will execute automatic adjustment and values will change; however, this value is quite normal. 2. RF LEVEL and jitter check Test mode PLAY status ("21" and "ALL" display ON)
5-9. ERROR RATE CHECK
5-9-1. Pit disk error rate check Procedure: 1. Insert the check disk (MD) TDYS-1 2. Turn the AMS dial until " CPLAY MODE " is displayed. 3. Press the YES/ENTER button to display " CPLAY MID ". 4. The display will change to " C1= AD= ". 5. Check to see that the C1 error rate is less than 20. 6. Press the NO/CANCEL button to stop playback, then press the MD EJECT button to remove the check disk (MD). 5-9-2. MO error rate check Procedure: 1. Insert a continuously recorded disk (see 5-4. Creating a continuous recording disk). 2. Turn the AMS dial until " CPLAY MODE " is displayed. 3. Press the YES/ENTER button to display " CPLAY MID ". 4. The display will change to " C1= AD= ". 5. Check to see that the C1 error rate is less than 50 and ADER is constantly not above 00. 6. Press the NO/CANCEL button to stop playback, then press the button to remove the continuously recorded disk.
21 07 00 3A0 ALL
ALL display ON : LPC (laser power control ON) ALL display OFF : LPC (laser power control OFF) (^ button : ALL display ON/OFF) Connection Point:
[MAIN BOARD] (SIDE A)
5-10. FOCUS BIAS CHECK
The focus tolerance volume is checked by changing the focus bias volume. Procedure: 1. Insert a continuously recorded disk (see 5-4. Creating a continuous recording disk). 2. Turn the AMS dial until "CPLAY MODE" is displayed. 3. Press the YES/ENTER button to display "CPLAY MID". 4. When "C1= AD= " is displayed, press the NO/CANCEL button. 5. Turn the AMS dial until "FBIAS CHECK" is displayed. 6. Press the YES/ENTER button to display " / c= ". The first 4 digits indicate the C1 error, the 2 digits following " / " indicate ADER and the 2 digits following "c=" indicate the focus bias volume. At this time, check to see that the C1 error is less than 50 and ADER is 00. / 7. Press the YES/ENTER button to change the display to " b= " At this time check to see that the C1 error is not less than 220 and ADER is constantly not above 00. 8. Press the YES/ENTER button to change the display to " / a= " At this time check to see that the C1 error is not less than 220 and ADER is constantly not above 00. 9. Press the NO/CANCEL button, then press the MD EJECT button to remove the continuously recorded disk.
Note 1: If the C1 error or ADER is more than 00 for only one of
Oscilloscope
TP (RFO) TP(VC)
Check to see that the jitter is less than 9.0 nsec. and RF level is between 1.0 1.5Vp-p.
VOLT/DIV : 200mV (using 10:1 probe) TIME/DIV : 500ns
RF level: 1.0 - 1.5Vp-p
points a (8. above) and b (7. above), there is the possibility of a gap in the focus bias adjustment. In such case, repeat adjustment.
24
3. Traverse signal check Connection Point:
[MAIN BOARD] (SIDE A)
DISPLAY SECTION
DIMMER ADJUSTMENT 1. Connect the LCD1 to the CN533 of the LCD board. 2. Connect the digital voltmeter to the CN533 8 pin of the LCD board. 3. Adjust the RV550 of the LCD board for 2.83V reading on digital voltmeter. Standard value : 2.83 2.93V Connection Point:
Digital voltmeter CN553 8 pin
[LCD BOARD] (Conductor Side)
+
Oscilloscope
TP (TEO) TP(VC)
Press the FF or FR from step2. Check to see that the traverse signal level is between 280 480mVp-p.
Note: Extend the sweep time for easier view.
RV550 : Dimmer adjustment
0V A=B
A 280 480mVp-p B
A 0V B
4. After completed with adjustment, press the RESET button to release the test mode.
25
TUNER SECTION
0dB=1µV
AM Section Function switch : MW or LW Volume : MIN
60cm loop antenna A AM RF signal generator loop antenna B
LW FREQUENCY COVERAGE ADJUSTMENT reading on digital Adjust part Frequency display voltmeter Confirmation 153kHz Standard value : 0.5 0.9V Adjustment value :5.5V CT3 297kHz Standard value : 5.1 5.9V LW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L3 162kHz CT1 261kHz
set
30% amplitude modulation by 400Hz signal Output level : as low as possible
FM Section Function switch : FM Volume : MIN FM ANTENNA SELECTOR switch : EXT
FM RF signal generator 0.01 µF FM EXT ANTENNA terminal
22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible
level meter 32 set
+
J301 (phones)
· Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.
MW/LW IF ADJUSTMENT Adjust for a maximum reading on level meter. CFT1 450kHz MW FREQUENCY COVERAGE ADJUSTMENT reading on digital Adjust part Frequency display voltmeter. Adjustment value :1.0V L5 531kHz Standard value : 0.8 1.2V Adjustment value :5.4V CT4 1,611kHz Standard value : 5.0 5.8V MW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L4 621kHz CT2 1,404kHz
26
Connect and Adjustment Location :
[TUNER BOARD] (SIDE B)
CFT1 : MW/LW IF Adjustment
Q14 R53
R52 R51
MW/LW frequency coverage FM frequency coverage Digital voltmeter 100 k
TP (VT)
TP (VT)
+
IC1
L9
Be sure not to move L9
L3
L3 : LW Tracking Adjustment
CT4
L5 CT3
CT1
CT2
L4
L4 : MW Tracking Adjustment
CT2 : MW Tracking Adjustment CT1 : LW Tracking Adjustment CT3 : LW Frequency coverage Adjustment L5 : MW Frequency coverage Adjustment CT4 : MW Frequency coverage Adjustment
27
SECTION 6 DIAGRAMS
6-1. EXPLANATION OF IC TERMINALS
BD BOARD IC101 MD SECTION RF AMPLIFIER (CXA2523R) Pin No. 1 2 3 4-9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pin name I J VC AF PD APC APCREF GND TEMPI TEMPR SWDT SCLK XLAT XSTBY FOCNT VREF EQADJ 3TADJ VCC WBLADJ TE CSLED SE ADFM ADIN ADAGC ADFG AUX FE ABCD BOTM PEAK RF RFAGC AGCI COMPO COMPP ADDC OPO OPN RFO MORFI MORFO I/O I I O I I O I I O I I I I I O I/O I/O I/O O O O I O O O O O O O I O I I/O O I O I O Description Input of RF signal l converted from I to V Input of RF signal J converted from I to V. Midpoint voltage (+1.5V) generation output. Signal inputs from optical pickup detector. Light volume monitor input. Laser APC output. Reference voltage input for laser power setting. Ground. Temperature sensor connection terminal. Reference voltage output for temperature sensor. Serial data input from CXD2652AR. Serial clock input from CXD2652AR. Latch signal input from CXD2652AR. "L": Latch Standby signal input. "L": Standby Center frequency control voltage input of internal circuits BFF22, BPF3T and EQ from CXD2652AR. Reference voltage output (not used). Pin for center frequency setting of internal circuit EQ. Pin for center frequency setting of internal circuit BPF3T. Power supply (+3V). Pin for center frequency setting of internal circuit BPF22. Tracking error signal output to CXD2652AR. External condenser connector pin for thread error signal LPF. Thread error signal output to CXD2652AR. ADIP FM signal output. ADIP signal comparator input ADFM connection by coupling with AC. External condenser connector pin for AGC of ADIP. ADIP duplex signal output to CXD2652AR. I3 signal/temperature signal output (switched by serial command) to CXD2652AR. Focus error signal output to CXD2652AR. Light volume signal output to CXD2652AR. RF/ABCD bottom hold signal output to CXD2652AR. RF/ABCD peak hold signal output to CXD2652AR. RF equalizer output to CXD2652AR. RF AGC circuit external condenser connector pin. Input RF amplifier output is input to RF AGC circuit by coupling with AC. User comparator output (not used). User comparator input (Fixed at "L"). Low-pass cutoff external capacitor terminal of ADIP amplifier. User op amplifier output (not used). User op amplefier inverted input (Fixed at "L"). RF amplifier output. Group RF signal input by coupling with AC. Group RF signal output.
APC : Auto Power Control AGC : Auto Gain Control
28
MAIN BOARD (2/2) IC405 SYSTEM CONTROL (CXP740096-026Q) Pin No. 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Pin name MD RADIO/LINE ACCHK NC NC NC RDS - DATA NC RDS - CLK CD - TURN NC CD - OPEN CD - CLOSE NC NC NC MD - H REC - H MD - RST MD - SCTS MD - SRTS MD - PDOWN D/LCON LCD - RST LCD - CE LCD - A0 LED - MD LED - RADIO LED - CD NC RADIO POWER CD POWER NC NC NC NC NC NC TU - SFT RST VSS XTAL EXTAL SELECT - GND HP - SW LCD - DATA LCD - CLK CD - DOOR JOG - A JOG - B I/O O O I I I I O O O O O O I O O O O O O O O O O O I I O O I O O I I I MD function output. Radio/LINE function output. AC power supply detection input. L : Supplied H : Not supplied Not used (OPEN). Not used (OPEN). Not used (OPEN). RDS serial data input. Not used (OPEN). RDS serial clock input. CD ON/OFF detection input. Not used (OPEN). CD tray control output. H : OPEN CD tray control output. H : CLOSE Not used (OPEN). Not used (OPEN). Not used (OPEN). D/A converter down signal output (MD play). D/A converter down signal output (MD recording). Reset signal output for MD system control. UART send request output to MD. UART send request input from MD. Notification of power cutoff to MD. Back light ON/OFF control output. Reset signal output to LCD. Chip enable output to LCD. Address output to LCD. MD LED drive output. BAND LED drive output. CD LED drive output. Not used (OPEN). Radio power supply ON/OFF control output. CD power supply ON/OFF control output. Not used (OPEN). Not used (OPEN). Not used (OPEN). Not used (OPEN). Not used (OPEN). Not used (OPEN). System clock shift output. System reset terminal. Ground. System clock (8MHz) oscillation input. System clock (8MHz) oscillation output. Destination select terminal. Headphone detection input. Serial data output to LCD. Serial clock output to LCD. CD tray Open/Close detection input. Jog dial rotation detection input (A). Jog dial rotation detection input (B). Description
29
Pin No. 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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
Pin name SELECT AVSS AVREF AVDD LED - PRESET/AMS LED - SELECT LINE LINE - LEVEL KEY4 KEY3 KEY2 KEY1 TU - MUTE TU - COUNT TU - CLK TU - DATA TU - CE NC MD - SRXD MD - STXD NC NC CD - XRST CD - CLK CD - XLAT CD - DATA CD - SENSE1 CD - SCOR CD - SQSO CD - SHORT CD - SQCK CD - MUTE CD - FOK CD - SENSE2 RMC TEX TX VSS VDD NC NC NC SPEED - L AU - DATA AU - CLK B/L - CONT PA - STANDBY AMUTE CD P - CON
I/O I O O O O I I I I O I O O O I O O O O O I I I I O O I I I I O O O O O O O O O Destination select detection input. A/D converter ground terminal.
Description
A/D converter reference voltage input. A/D converter power supply terminal. AMS/PRESET LED drive output. SELECT LED drive output. Function LINE output. LINE level control signal output. Key input (4). Key input (3). Key input (2). Key input (1). Radio mute drive signal output. Radio PLL data input. Radio PLL clock output. Radio PLL data output. Radio PLL chip enable output. Not used (OPEN). Communicate with MD and UART receive input. Communicate with MD and UART send output. Not used (OPEN). Not used (OPEN). CD system reset signal output. CD serial clock output. CD system lack output. CD serial data output. CD SENSE 1 input. CD SCOR input. CD SUB Q data input. CD POWER circuit short detection input. CD SUB Q clock output. CD system mute output. CD FOK input. CD SENSE 2 input. Remote control signal input. Real clock oscillation input (32.768kHz). Real clock oscillation output (32.768kHz). Ground. Power supply terminal. Not used (OPEN). Not used (OPEN). Not used (OPEN). Open/Close motor drive output. AUDIO data output. AUDIO clock output. Back light ON/OFF control output. Power amplifier ON/Standby control output. Audio mute signal output. CD function output. POWER ON/OFF control.
30
· BD BOARD IC121 digital signal processor, digital servo signal processor, EFM/ACIRC encoder/decoder, shockproof memory controller, ATRAC encoder/decoder, 2Mbit DRAM (CXD2652AR) Pin No. 1 2 3 4 5 6 7 8 9 10 11 Pin name MNT0(FOK) MNT1(SHCK) MNT2(XBUSY) MNT3(SLOC) SWDT SCLK XLAT SRDT SENS XRST SQSY I/O O O O O I I(S) I(S) O(3) O(3) I(S) O FOK signal output to system control. H is outputted when in focus. Track-jump detection signal output to system control. Monitor 2 output to system control. Monitor 3 output to system control. Write-data signal input from system control. Serial clock signal input from system control. Serial latch signal input from system control. Read-data signal output to system control . Internal status (SENSE) output to system control. Reset signal input from system control. "L": Reset Subcode Q-SYNC (SCOR) output to system control. Majority of those which output "L" every 13.3 seconds output "H". Subcode of digital-in U-bit CD format to system control. 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2932 33 3438 39 40 41 42 43 44 45 46 47 48, 49 50 DQSY RECP XINT TX OSCI OSCO XTSL TEST G DVSS DIN DOUT ADDT DADT LRCK XBCK FS256 DVDD A03A00 A10 A04A08 A11 DVSS XOE XCAS A09 XRAS XWE D1 D0 D2,D3 MVCI O I O I I O I I O I O O O O O O O O O O O O O I/O I/O I/O I(S) Clock input from external VCO (Fixed at "L"). DRAM data I/O. Ground for digital. DRAM output-enable output. DRAM CAS signal output. DRAM address output. DRAM RAS signal output. DRAM write-enable signal output. DRAM address outputs. Majority of those which outputs "L" every 13.3 seconds during output of Q-SYNG (SCOR) outputs "H". Laser power switch input from system control "H": Record, "L": Playback. Interrupt status output to system control. Record data output authorization input from system control. System clock input (512Fs = 22.5792MHz). System clock output (512FS = 22.5792MHz). Pin for system clock frequency setting . "L": 45.1584MHz "H": 22.5792MHz (Fixed at "H"). Test terminal. Ground (digital system). Digital audio input (for optical input). Digital audio output (for optical output). Data input from A/D converter. Data output to D/A converter. LR clock output (44.1kHz) for A/D and D/A converters. Bit clock output (2.8224MHz) for A/D and D/A converters. 11.2896MHz clock output (unused). Power supply for digital (+3V). Description Pin No. 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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 9698 99 100 Pin name ASYO ASYI AVDD BIAS RFI AVSS PDO PCO FILI FILO CLTV PEAK BOTM ABCD FE AUX1 VC ADIO AVDD ADRT ADRB AVSS SE TE AUX2 DCHG APC ADFG F0CNT XLRF CKRF DTRF APCREF LDDR TRDR TFDR DVDD FFDR FRDR FS4 SRDR SFDR SPRD SPFD FGIN TEST1TEST3 DVSS EFMO I/O O I(A) I(A) I(A) O(3) O(3) I(A) O(A) I(A) I(A) I(A) I(A) I(A) I(A) I(A) O(A) I(A) I(A) I(A) I(A) I(A) I(A) I(A) I(S) O O O O O O O O O O O O O O O I(S) I O Playback EFM duplex signal output. Playback EFM comparator slice level input. Power supply for analog (+3V). Playback EFM comparator bias current input. Playback EFM RF signal input. Ground for analog. Phase comparison output for clock playback analog PLL of playback EFM (not used). Phase comparison output for record/playback EFM system master PLL. Filter input for record/playback EFM system master PLL. Filter output for record/playback EFM system master PLL. Internal VCO control voltage input for record/playback EFM system master PLL15. Light volume signal peak hold input from CXA2523AR. Light volume signal bottom hold input from CXA2523AR. Light volume signal input from CXA2523AR. Focus error signal input from CXA2523AR. Auxiliary A/D input. Midpoint voltage (+1.5V) input from CXA2523AR. A/D converter input signal monitor output (not used). Power supply for analog (+3V). A/D converter operating range upper limit voltage input (Fixed at "H") . A/D converter operating range lower limit voltage input (Fixed at "L"). Ground for analog. Thread error signal input from CXA2523AR. Tracking error signal input from CXA2523AR. Auxiliary A/D input (Fixed at "L"). Connected to +3V power supply. Laser digital APC error signal input (Fixed at "L"). ADIP duplex FM signal input (22.05±1kHz) from CXA2523AR. Filter f0 control output from CXA2523AR. Control latch output from CXA2523AR. Control clock output from CXA2523AR. Control data output from CXA2523AR. Laser APC reference PWM output. Laser digital APC PWM output (not used). Tracking servo drive PWM output (-). Tracking servo drive PWM output (+). Power supply for digital (+3V). Focus servo drive PWM output (+). Focus servo drive PWM output (-). 176.4kHz clock signal output (X'tal) (not used). Thread servo drive PWM output (-). Thread servo drive PWM output (+). Spindle servo drive PWM output (-). Spindle servo drive PWM output (+). Spindle CAV servo FG input. Test input pins (Fixed at "L"). Ground for digital. EFM output during recording. Description
DG BOARD IC601 SYSYTEM CONTROL (RU8X12MF-0021) Pin No. 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 EFM : Eight to Fourteen Modulation PLL : Phase Locked Loop VCO : Voltage Controlled Oscillator 50 RST LOW GND +3.3V SNG/CHG JOG1 STB REC P PB P LD LOW NC MNT2 MNT3 LEDO SENS SHOCK ________ SYS-RST TEST +3.3V VBAT XOUT-T XINT-T GND XOUT XIN EXEM S1 SQSY DQSY AVSS X INT PDOWN Pin name DAOUT0 DAOUOT1 KEY0 KEY1 KEY2 CHACK IN PACK IN PACK OUT I/O I I I I I I I I I I O I O I I I I O I I O I I not used (OPEN). not used (OPEN). Reserved ("H" level). Reserved ("H" level). Reserved ("H" level). Detection input from chucking-in switch (S685). Detection input from back-in switch (not used). Detection input from back-out switch (S686). not used (ground connection). not used (ground connection). ground for analog. Interrupt status input from digital signal processor IC (IC121). Power cutoff signal input from master control IC (IC801). Reserved (ground connection). Subcode Q-SYNC (SCOR) input from digital signal processor IC (IC121). Digital-in U-bit format subcode input from digital signal processor IC (IC121). Reserved (ground connection). Reserved (ground connection). Reserved (ground connection). System reset input pin "L": Reset. Test mode pin "L": Normal mode, "H": Test mode. Power supply terminal (VCC). Power supply pin for internal RTC and RAM. Sub-clock connector pin (32.768kHz). Sub-clock connector pin (32.768kHz). Power supply terminal (ground). Main clock connector pin (12MHz). Main clock connector pin (12MHz). Switch pin for External ROM mode and Internal ROM mode. not used (OPEN). Reserved (ground connection). Internal status (SENSE) input from digital signal processor IC (IC121). Track-jump detection signal input from digital signal processor IC (IC121). Reserved (ground connection). Reserved (ground connection). Power ON/OFF control signal output. Detection input from REC switch (S688). Detection input from PB switch (S687). Loading motor control signal output. not used (OPEN). Monitor 2 input from digital signal processor IC (IC121). Monitor 3 input from digital signal processor IC (IC121). not used (OPEN). Reserved (ground connection). Reserved (ground connection). not used (OPEN). Power supply terminal (ground). Power supply terminal (VCC). Reserved (ground connection). Reserved (ground connection). Description Pin No. 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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 AMUTE LD OUT LD IN LIMIT IN PROTECT REFLECT GND +3.3V SCTX XLATCH LOCK WRPWR ________ DIG-RST _______ DA-RST DSEL-A DSEL-B MOD __ REC/PB RXD (UART) TXD (UART) RTS (T) CTS (R) AUBIT0 AUBIT1 CLKSET0 CLKSET1 GND +3.3V SCLK SWDT SRDT EMP SCK1 SOUT1 SIN1 CSB LDON PIT/GRV FOK Pin name JOG0 SDA SCL 2M/4M I/O I/O O O I I O O O I O O I O O O O O O O O I I I Reserved (ground connection). Serial data I/O with EEPROM (IC171). Serial clock output to EEPROM (IC171). Reserved ("H" level). Reserved (ground connection). Reserved (ground connection). Communication with master control IC (IC801) and UART receive output. Communication with master control IC (IC801) and UART send input. UART send request input from master control IC (IC801). UART send request output to master control IC (IC801). Reserved ("H" level). Reserved (ground connection). Reserved (ground connection). Reserved (ground connection). Power supply pin (ground). power supply pin (VCC). Serial clock output to digital signal processor IC (IC201). Write data signal output to digital signal processor IC (IC121). Read data signal input from digital signal processor IC (IC121). Delmphasis ON/OFF control signal output. not used (OPEN). not used (OPEN). not used (OPEN). Reserved (VCC connection). Laser ON/OFF control signal output. not used (OPEN). Focus OK signal input from digital signal processor IC (IC121). not used (OPEN). not used (OPEN). Laser power switch signal output to digital signal processor IC (IC121). Reset signal output. not used (OPEN). Reset signal output to D/A and A/D converters "L": reset. not used (OPEN). not used (OPEN). MD module ON/OFF control signal output. not used (OPEN). not used (OPEN). Record data output authorization signal output. Serial latch signal output to digital signal processor IC (IC121). not used (OPEN). not used (OPEN). not used (OPEN). Loading motor F control signal output. Loading motor F control signal output. Detection input from limit switch (S681). Record tab detection input from disk write-protect switch (S683). Disk reflection rate detection input from reflect switch (S682). Power supply terminal (ground). Power supply terminal (VCC). Description
* In the I/O column, I(S) is Schmitt input, I(A) is analog input, O(3) is state output and O(A) is analog output.
31
32
33
34
ZS-M50
6-2. BLOCK DIAGRAM (MAIN SECTION)
· Signal path. F : FM f : MW/LW E : MD PLAY q : MD REC J : CD
35
36
37
38
ZS-M50
6-3. BLOCK DIAGRAM (MD SECTION)
r
Circuit Boards Location
POWER board
CD MOTOR board AUDIO board MOTOR board
CONTROL (L) board ANTENNA SW board
JOG board MAIN board CONTROL (F) board CONTROL (R) board LINE board
CONTROL SW board
BATT board SW board
LCD board
BD board
TUNER board BL board
DG board
· Signal path. E : MD PLAY q : MD REC J : CD
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40
41
42
6-5. SCHEMATIC DIAGRAM MAIN SECTION (1/3)
r
Refer to page 89 for IC Block Diagrams.
ZS-M50
r Waveforms
Main Section (1/3)
1
PLAY MODE
4
3.2 Vp-p
1.0 1.5 Vp-p
8.7 µsec
IC701 #¡ (RFO)
VOLT/DIV : 0.2 V AC TIME/DIV : 0.5 µsec
IC702 @ª (PCO)
VOLT/DIV : 1 V AC TIME/DIV : 2 µsec
2
PLAY MODE
5
3.3 Vp-p
0.7 Vp-p
23.25 µsec
IC701 $¡ (TEO)
VOLT/DIV : 0.2 V AC TIME/DIV : 0.5 msec
IC702 $º (LRCKI)
VOLT/DIV : 1 V AC TIME/DIV : 5 µsec
3
PLAY MODE
6
0.6 Vp-p
PLAY MODE
1.3 Vp-p
16.44MHz
IC701 $· (FEO)
VOLT/DIV : 0.2 V AC TIME/DIV : 0.2 msec
IC702 &¡ (XTAO)
VOLT/DIV : 0.5 V AC TIME/DIV : 20 nsec
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. · A : B+ Line. · Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD STOP ( ) : CD PLAY · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. · Circled numbers refer to waveforms. · Signal path. J : CD
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48
49
50
ZS-M50
r Waveforms
6-6. SCHEMATIC DIAGRAM MAIN SECTION (2/3)
r
Refer to page 89 for IC Block Diagrams.
Main Section (2/3)
1
0.5 Vp-p 8 MHz
IC405 $TM XTAL
VOLT/DIV : 0.1 V AC TIME/DIV : 50 nsec
2
3.0 Vp-p
32 kHz
IC405 *¶ TX
VOLT/DIV : 1 V AC TIME/DIV : 10 µsec
3
2.5 Vp-p 4 MHz
IC406 !¢ XO
VOLT/DIV : 0.5 V AC TIME/DIV : 0.1 µsec
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. · 5 : fusible resistor. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. · A : B+ Line. · Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : FM · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Circled numbers refer to waveforms. · Signal path. F : FM E : MD PLAY q : MD REC J : CD
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52
53
54
6-7. SCHEMATIC DIAGRAM MAIN SECTION (3/3)
r
Refer to page 89 for IC Block Diagrams.
ZS-M50
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. · A : B+ Line. · Voltages are dc with respect to ground under no-signal conditions. no mark : FM · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Signal path. F : FM E : MD PLAY q : MD REC J : CD
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57
6-9. SCHEMATIC DIAGRAM AUDIO SECTION
r
Refer to page 93 for IC Block Diagram.
ZS-M50
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. · A : B+ Line. · Voltages are dc with respect to ground under no-signal conditions. no mark : FM · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Signal path. F : FM
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ZS-M50
6-10. SCHEMATIC DIAGRAM DG SECTION
r
Refer to page 93 for IC Block Diagram.
r
Waveforms DG Section
1
0.63 Vp-p 12 MHz
IC601 @¶ XOUT
VOLT/DIV : 0.2 V AC TIME/DIV : 20 nsec
2
0.4 Vp-p 32.768 kHz
IC601 @¢ XOUT-T
VOLT/DIV : 0.1 V AC TIME/DIV : 10 µsec
3
0.6 Vp-p 22.5 MHz
IC605 1
VOLT/DIV : 0.2 V AC TIME/DIV : 20 nsec
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. ¢ · : internal component. · A : B+ Line. · Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : MD STOP · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. · Circled numbers refer to waveforms. · Signal path. E : MD PLAY q : MD REC J : CD
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70
ZS-M50
6-12. PRINTED WIRING BOARDS TUNER SECTION
1 2 3
r
Refer to page 42 for Circuit Boards Location.
4 5 6 7 8 9 10 11
[ANTENNA SW BOARD]
A ANT1 FM TELESCOPIC ANTENNA
S1 FM ANTENNA SELECTOR EXT
1-675-236-
21 (21)
r
[TUNER BOARD] (SIDE A)
B
[TUNER BOARD] (SIDE B)
Semiconductor Location
Ref. No. D1 D4 D5 D6 D7 D8 D9 D10 D11 D12 Location H-4 E-2 E-2 C-2 C-2 E-2 E-2 G-5 G-2 G-2 E-4 D-8 G-3 G-2 G-4 G-4 G-4 F-9 F-9 F-8 G-8 E-8 F-8 C-10 F-8
CN4
TU1
C71 R22
R21 C49
C8
C D7 D6
1 2
R66 R54
3 4
5 6 7
C43
8
C28
R62
R63
R28
C50
C30
Q14 R53
R51
R29
CFT1 CF2
R23
C33
CF4
C68
FM EXT ANTENNA
CF3
C48
C34
R61
C20
R30
CF5
R64
D 1 5
X1
R26
C36 C37 TP (VT)
R52
IC1 IC2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15
C35
C63
10 C24
12 C25
R58
R36
D9
C47 TB1
C22
C23
C31
C32
IC1
20 C53 15 C19 13 CF1
C21
R59
IC2
C56 C55 C54 R38 R39 R40 R42
R41
R27
D8
E D4 D5 R4 24
C29 JC5
R31
C26
R20
C46
C13
C2 7
C14
L10
R25
L2
C51
L9
R48 R67
C18
R19
FB9
MW/LW ANTENNA
R17
Q12
R46 CN3
1 C38
C67
C62
C45 R18
C17 C64
Q13
R49 C41 C42
R37 Q9 R33
R55
F
C15
R43 C40
R47
JC1
FB5 5 C65
JC7
C58
R57
C1
FB4 R35
FB6 C7 10 FB7
Q5 R3 L1
L4 C3
Q6 L5
R8
(Page 44)
C61
G
Q3
CN402 CN408 MAIN BOARD
R65
Q4
D10
L3
Q11
C39
CT4 C6 R9 14
D1
R5 C2
H
CT2
CT1
C4 CT3
1-671-31121 (21) 1-671-31121 (21)
02
C5
R6
D12
Q7
F
G
R7
JC6
D11
R16
FB1 FB2
Q15 R2
Q10
R50
C16
Q8
Note: · X : parts extracted from the component side. ® : Through hole. · · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: Parts on the pattern face side seen from the (Side B) pattern face are indicated. Parts face side: Parts on the parts face side seen from the (Side A) parts face are indicated.
73
74
C44
ZS-M50
6-13. SCHEMATIC DIAGRAM TUNER SECTION
r
Refer to page 94 for IC Block Diagrams.
r Waveform
Tuner Section
1
1.5 Vp-p 75 kHz
IC2 @º XOUT
VOLT/DIV : 0.5 V AC TIME/DIV : 5 µsec
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. ¢ · : internal component. · A : B+ Line. · H : adjustment for repair. · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM ( ) : MW < > : LW · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. · Circled numbers refer to waveforms. · Signal path. F : FM f : MW/LW
75
76
77
ZS-M50
6-14. SCHEMATIC DIAGRAM CONTROL SECTION
Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV o