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1
Colour Television
Chassis
L7.3A
AA
CL 86532010_001.ai 160298
ServiceManual
Content
1 2 3 4 5 6 Technical specifications Connection facilities, location of panels Safety instructions, Warnings and Notes Mechanical instructions Repair facilities Software adjustments and Hotel mode Block diagram, Survey of testpoints Diagram supply voltages survey Electrical Diagrams and print lay-outs 2 3 4 6 7 12 13 14 7 Main PWB layout Power supply Main PWB layout Line drive Sync-frame & vertical drive Video Processing Control Sound processing Sound amplifier BTSC decoding CRT PWB/ Audio sound PWB CRT module Nicam sound panel 8 Electrical adjustments 9 Circuit Descriptions new circuits 10 Directions for use (limited) 11 List of abbreviations 12 Spareparts list
5 Subject in The Netherlands of Philips. without theby LV permisionService Department Copyright prior 9864 Printed to modificationTV Published reserved 1998 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or 727 21566 4822 otherwise
diagram A1 diagram A2 diagram A3 diagram A4 diagram A5 diagram A6 diagram A7 diagram A8 diagram B diagram C
Diagram PWB 16 17 16 18 19 18 20 18 21 18 22 18 23 18 24 18 25 18 26 27 26 28 26 29 31 38 46 47
©Copyright reserved 1998 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permision of Philips.
Published by LV 9864 TV Service Department
Printed in The Netherlands
Subject to modification
5 4822 727 21566
2
Mains Voltage:
1 Technical specifications
L7.3A
1
: : : : : : : : : : : : : : : : :
Technical specifications
150 - 276 Volt 90 - 276 Volt 50 Hz 60 Hz < 10 Watt 25" : 75Watt +/- 10% 29" : 90 Watt +/- 10% Yes 75 Ohm - coax 25" and 29" 27 KVolt 30 KVolt Linitted at 33 Watt 2 X 3 Watt 2 X 5 Watt > 46 dB unweighted > 53 dB weigted
Mains frequency Power Consumption in stand-by Power Consumption normal mode Chassis mains isolated Aerial input impedance TV Picture tube range EHT voltage for 25" EHT voltage for 29" Max EHT power Sound output power Picture S/N at 70uVolts
2
2
Connection facilities
Connection facilities
L7.3A
3
VIDEO 2 IN VIDEO
VIDEO 1 IN
OUT VIDEO
ANTENNA IN
L AUDIO R
L AUDIO R
CL 86532010_003.ai 160298
IR Red
- + Channel - + Volume
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2.1
Cinch
- Video - Audio - Audio 1Vpp/75 L(0.5Vrms 10k) R(0.5Vrms 10k) q q q
2.2
Head phone
(8 - 600 / 4mW) ot
2.3
Location of panels
CRT PANEL
B
C
NICAM PANEL
MAIN
POWER SUPPLY LINE DRIVE SYNC / FRAME VERTICAL DRIVE VIDEO PROCESSING (BIMOS IC) CONTROL SOUND PROC. + SOUND INTERFACE SOUND AMPLIFIER BTSC DECODING
A1 A2 A3 A4 A5 A6 A7 A8
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4
3.1
3
L7.3A
Safety instructions, Maintenance instruction, Warnings and Notes
3
Safety instructions, Maintenance instruction,
When the set is used in circumstances with higher dust, grease or moisture levels, for example in a kitchen, the recommended interval is 1 year. The maintenance inspection contains the following actions: · Execute the above mentioned 'general repair instruction'. · Clean the power supply and deflection circuitry on the chassis. · Clean the picture tube panel and the neck of the picture tube.
Safety instructions for repairs
Figure 3-1
1. Safety regulations require that during a repair: the set should be connected to the mains via an isolating transformer; safety components, indicated by the symbol (see fig. 3.1), should be replaced by components identical to the original ones; when replacing the CRT, safety goggles must be worn.
3.3
Warnings
2. Safety regulations require that after a repair the set must be returned in its original condition. In particular attention should be paid to the following points. As a strict precaution, we advise you to resolder the solder joints through which the horizontal deflection current is flowing, in particular: · all pins of the line output transformer (LOT); · fly-back capacitor(s); · S-correction capacitor(s); · line output transistor; · pins of the connector with wires to the deflection coil; · other components through which the deflection current flows. Note: This resoldering is advised to prevent bad connections due to metal fatigue in solder joints and is therefore only necessary for television sets older than 2 years. The wire trees and EHT cable should be routed correctly and fixed with the mounted cable clamps. The insulation of the mains lead should be checked for external damage. The mains lead strain relief should be checked for its function in order to avoid touching the CRT, hot components or heat sinks. The electrical DC resistance between the mains plug and the secondary side should be checked (only for sets which have a mains isolated power supply). This check can be done as follows: · unplug the mains cord and connect a wire between the two pins of the mains plug; · set the mains switch to the on position (keep the mains cord unplugged!); · measure the resistance value between the pins of the mains plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 MW and 12 MW; · switch off the TV and remove the wire between the two pins of the mains plug. The cabinet should be checked for defects to avoid touching of any inner parts by the customer.
1. ESD All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential. Available ESD protection equipment: anti-static table mat (large 1200x650x1.25mm) 4822 466 10953 anti-static table mat (small 600x650x1.25mm) 4822 466 10958 anti-static wristband 4822 395 10223 connection box (3 press stud connections, 1 M ohm) 4822 320 11307 extension cable (2 m, 2 M ohm; to connect wristband to connection box) 4822 320 11305 connecting cable (3 m, 2 M ohm; to connect table mat to connection box) 4822 320 11306 earth cable (1 M ohm; to connect any product to mat or connection box) 4822 320 11308 complete kit ESD3 (combining all 6 prior products small table mat) 4822 310 10671 wristband tester 4822 344 13999 2. In order to prevent damage to ICs and transistors, all highvoltage flashovers must be avoided. In order to prevent damage to the picture tube, the method shown in Fig. 3.2 should be used to discharge the picture tube. Use a highvoltage probe and a multimeter (position DC-V). Discharge until the meter reading is 0V (after approx. 30s). 3. Together with the deflection unit and any multipole unit, the flat square picture tubes used from an integrated unit. The deflection and the multipole units are set optimally at the factory. Adjustment of this unit during repair is therefore not recommended. 4. Be careful during measurements in the high-voltage section and on the picture tube. 5. Never replace modules or other components while the unit is switched on. 6. When making settings, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable. 7. Wear safety goggles during replacement of the picture tube
3.2
Maintenance instruction
It is recommended to have a maintenance inspection carried out by a qualified service employee. The interval depends on the usage conditions: When the set is used under normal circumstances, for example in a living room, the recommended interval is 3 to 5 years.
3.4
Notes
1. The direct voltages and oscillograms should be measured with regard to the tuner earth , or hot earth as this is called (see fig. 3.3) 2. The direct voltages and oscillograms shown in the diagrams are indicative and should be measured in the Service Default Mode (see chapter 8) with a colour bar signal and stereo sound (L:3 kHz, R:1 kHz unless stated otherwise) and picture carrier at 475.25 MHz.
3
Safety instructions, Maintenance instruction,
3. Where necessary, the oscillograms and direct voltages are measured with and without aerial signal. Voltages in the power supply section are measured both for normal operation and in standby . These values are indicated by means of the appropriate symbols (see fig. 3.3). 4. The picture tube PWB has printed spark gaps. Each spark gap is connected between an electrode of the picture tube and the Aquadag coating. 5. The semiconductors indicated in the circuit diagram and in the parts lists are completely interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors.
L7.3A
5
V
CL 26532098/042 140792
Figure 3-2
tuner earth tuner aarde la masse du tuner Tuner-Erde massa del tuner tierra del sintonizador with aerial signal met antenne signaal avec signal d'antenne mit Antennensignal con segnale d'antenna con la señal de antena normal condition normaal bedrijf fonctionnement normal normaler Betrieb funzionamento normale funcionamiento normal
hot earth hete aarde la terre directe heißen Erde massa calda tierra caliente without aerial signal zonder antenne signaal sans signal d'antenne .ohne Antennensignal senza segnale d'antenna sin la señal de antena stand by stand by position de veille in Bereitschaft modo di attesa posición de espera
Figure 3-3
6
4 Mechanical instructions
L7.3A
4
Mechanical instructions
For the service position of the main carrier see figure 4.1: The main carrier can be removed by releasing the 2 carrier blocking lips (1) and pulling the carrier panel backwards.
1 1
2
A
B
Figure 4-1
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5
5
Faultfinding tree & Repair facilities
SWITCH - ON TV SET
NO PICTURE ON SCREEN NO PICTURE NO SOUND Peak voltage at pin 6 ic 7520 >2.5v YES
CHECK : CRT VOLTAGE 2841, 3840, 3841, 7930 YES LED CONTINUOUSLY ON
NO
Over voltage protection YES Voltage at pin 14 IC7520 <2.5V NO Check : sensing primary CCT 3514,3521
NO
PICTURE DARK
Set in standby or Proteceion mode YES
Check : feedback loop 7581, 3577 YES
LED BLINKING NOT ERROR CODE NO
Check : take over CCT 3528,3529,5540 6540
CHECK : LOT OUTPUT +5V 2484,2488,3489,3490, 3493,6488,6489,7480 LED REACTION ON RC NO SET IN HICK-UP MODE NO Check: 140v, 1572,3575,3585,5573, 6560, 7570,7581, SET SHUTDOWN YES Check : 6445, 7445 7518 Check : +8V supply FM/CVBS
NO SOUND YES
RASTER W/O SIGNAL
Check : Standby CCT +/-11V(LOT), +8V(IC7541), VFB,HFB,XRAY,EHT_INFO YOKE COIL : M4 & M5
YES
Faultfinding tree & Repair facilities
CHECK : TUNER SUPPLY PIN6 & PIN7 +5 VOLT 2002,5003,
Voltage +8V,+13V, +14V OK NO Check : 5300,3330,3340,7312,7311 FOR ITT PANEL ONLY CHECK : +5V,+8v SUPPLY 3247,5203,5204,5205
NO CHECK +5V, +8V SUPPLY CONTROL Picture Offset 66% Pin Cushion NO VOLTAGE AT PIN 1 IC 7520 YES PULSES AT PIN 3 IC 7520 NO REPLACE IC 7520 YES NO
Picture DIST
Picture Shift
Picture Bottom 1/2 Gone
Picture In Blue & Flyback Line
Check : 1500,2507,2508 2517,2529,3510 3518,3519,3521 3525,3529,3530 5545,6514,6540 7518,7520
Check 3489,3490 3493,6488 6489,7401 7460,7480 7518 Check 2405,2440 3401,6401 6490,7401
Check 3449,5445 6449,6450 6560,7401 7460,7518 7541
Check 2489,3486 3487,3491 3492,5445 6486,6490 7401,7460 7518
Check 3449,5445 6449,6450 6560,7401 7460,7518 7541
Check : 2457,2466 2470,2472 2475,3454 3457,3458 3472,3474 5451,5457 5465,5470 5471,6460 6461,6470 6472,7460 7470,7518
Check : 3506,3510,3529 3530,6510
L7.3A
Check : 3525, 3518,7518
CL86532018_022.ai 03-04-'98
7
8
5.1 5.2
L7.3A
Repair facilities Functional blocks
5
Faultfinding tree & Repair facilities
To leave the Service mode press the stand-by button on the remote control. REMARKS : After switching off and on the mains switch, the set remains in the service mode (SDM- or SAM mode). Features are : · · · · · · Service settings after entry Service (sub) menu selection Error buffer display Software version and identification display Life timer (run timer) display Option bytes
The PCB has service printing on both sides , so on the copper and the component side. Functional blocks are indicated by lines and text. Test points are referring to the functional blocks as mentioned above : Test pointElectrical function P1, P2, etc. :Power supply L1, L2, etc. :Line drive and line output F1, F2, etc. :Frame drive and frame output S1, S2, etc. :Synchronization V1, V2, etc.: Video A1, A2, etc.: Audio C1, C2, etc.:Control B1, B2, etc : BTSC stereo decoding N1, N2, etc.:NICAM stereo decoding
5.4
Initial states
The initial state after switching on in service mode for System and Tuning are as follows : · · · For Multi-System sets PAL BG/SECAM/DK/NTSC For Bi-Norma and Tri-Norma sets NTSC/PAL-M/PAL-N For sets with VST tuning : Programme number 1 is selected and the system will be tuned at the tuning data (for programme 1) read from EEPROM For sets with PLL tuning : Set is tuned to a frequency of 475.25 MHz.
The numbering is done in for a diagnostics logical sequence. Example: Checking the power supply, start with test point P1, P2 etc. ·
5.3
Service mode
The service mode is a pre-defined mode which can be used for faultfinding and adjustments (especially when the TV gives no picture at all you can use the service default mode). All oscillograms and DC voltages in this service manual are measured in the service default mode. The service mode is split into two parts : · · Service Default Mode (SDM). Service Alignment Mode (SAM).
Further settings : · · · · · · · The automatic switch off (no IDENT) timer and the sleep timer will be ignored The child lock will be disabled. If the TV sets was in hotel mode, this mode will be disabled as long as the TV is in service mode. Brightness, saturation, sharpness, contrast and balance are initialised to 50% level. The volume is set to 25% level. The TV is normally controllable. All displayed text strings in service mode, so SDM and SAM mode will be displayed in the English language.
SDM. In the service default mode you are able to carry out (hardware) measurements under pre-defined conditions. To entry the (SDM) Service Default Mode there are two possibilities: · · Via the "DEFAULT" button on the Dealer Service Tool, service codenumber : 4822 218 21232. Via Short-circuiting the service pins M24 and M25 on PCB and switching on the set via the mains switch. For M25 and M24 see Diagram A4 and the PWB drawing of the main panel
Other features RAM test of the uP (=IC7600) and the NV RAM (=IC7620). At every start-up of the TV, a read after write test for the complete RAM of IC7600 and via I2C the NVRAM (=IC7620) will be performed. If this check fails, the appropriate error number will be written in the error buffer. The patterns will be chosen in such a way that every bit of all bytes, will be written high and low. If the NVRAM is empty default values will be loaded.
In the SDM mode a "S" (in green) and the menu (in red) is displayed (see Fig. 1). SAM. In the SAM mode you are able to align/adjust settings via menu selection. To entry the (SAM) Service Alignment Mode there are two possibilities : · · Via the "ALIGN" button on the Dealer Service Tool Via Short-circuiting service pins M28 and M29 on PCB and switching on the set via the mains switch. For M25 and M24 see Diagram A4 and the PWB drawing of the main panel
5.5
SDM (Service Default Mode)
This menu is being displayed whenever SDM is entered. In this menu the error buffer can be inspected, and the option byte(s) can be (re)programmed. The overview of the menu is shown below : The MENU UP/DOWN command can be used to select the next/ previous option ; the MENU LEFT/RIGHT command can be used to change the option value.
In the SAM mode a "S" (in green) and the menu (in red) is displayed (see Fig. 2). REMARKS: After the set is in the service mode the short circuit can be removed. L73AP21 1.0 (Software version)
S (Service mode) 9999 (Life timer)
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Faultfinding tree & Repair facilities
VALUE 8888 7777 66 (options bytes)
L7.3A
Error code indication via blinking stand by LED
9
AS (options description) ERR (error buffer)
5.5.4
3 4 3 0 0 (error code)
The ERROR code are also indication via blinking of the standby LED. This is important if no OSD function or picture is available. The method is to show that the LED blinks as many as the error code indicates.. Example: Error code 4 will result in four blinks of the LED ( 0.25 seconds ON and 0.25 seconds OFF).After this sequence the LED will be OFF for 3 seconds and the blinking of the LED is repeated again.
Explanation : L73AP21 1.0: The software identification, version and cluster. AS: A two character short name for the option to be selected. (see table ) VALUE: The value of the selected option. ERR: Error buffer display 34300 S: The character " S " indicates that the TV set is in the service mode. 9999: The hexadecimal value of the life timer. 8888 7777 66: 10 digits of value representation of the option byte contents
5.5.5
Option abbreviation and Option status.
To select another option abbreviation use the MENU UP/ DOWN buttons and to change the status use the MENU LEFT/ RIGHT buttons. Elucidation: With above items the option statuses stored in the EEPROM can be changed. This is necessary if the EEPROM is replaced by a fresh EEPROM, because a fresh EEPROM is initial loaded with default options by the uC. The options stored in the factory can differ per type and stroke number. Therefore it is necessary to load the EEPROM with the correct options (configuration). These options are indicated on a sticker glued inside on the rear cover of the set. Remark: For sets with BTSC sound, also the options TUN.FOA, TUN.FOB, EXT.FOA and EXT.FOB have to be set. See for these items Paragraph 6 Loading a fresh EEPROM · · · · · · · Switch on the TV via the power switch. Audio mute the TV (to get no big noise). Change the option codes as indicated on the sticker on the rear cover. Put TV in stand by via the remote control. Switch on the TV again via the remote control. Switch OFF the TV via the power switch Switch on the TV again via the power switch.
5.5.1
Software identification
If there is a change of the software this number will be changed.
5.5.2
Life timer (run timer)
This life timer only counts the normal operations hours and not the stand-by hours. Also at every switch- on the life timer is incremented by 1.
5.5.3
Option code
The possible options are listed in the following table 1: Error buffer The last five errors, stored in the NVRAM=EEPROM (IC7620), are shown in the service main menu; this is called the errorbuffer. An error will be added to the buffer if this error differs from the last error in the buffer. The last found error is displayed on the left-side. Example: Suppose the display shows: 3 4 0 0 0. This means the last found error is error number 3, the last found error but one is error number 4, and so on. 40000 34000
In the table all the possible option abbreviation with full option name and possible status are listed. Table 1 : Options description for L7.3 versions.
Full option name
REMARKS: If the (IC7620=) EEPROM is replaced by a new one the set has to be installed according to the option code. The ERROR BUFFER will be erased when the set is switched from service mode in stand by, or via DST code 99. Error codes The following error codes have been defined : 0 - No error 1 - Internal RAM 2 - General 12C error 3 - EEPROM Configuration error (Checksum error) 4 - I2C error (MSP3410 / TDA9850/TDA9860) 5 - I2C error (TDA8374) 6 - EEPROM error (ST24C04) 7 - I2C error (PLL tuner)
Option name abbreviation AC AF AS AV BL BM BT CH CK CP EW
Status Possibilities
Auto cable detect AFC Status Auto scan AVL Balance Bilingual Mono Bass Treble Child Lock Clock Contrast plus EW control
ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF
10
4 : 3 Expend Games Hospital mode Monitor No Ident NTSC Play Back Spatial Sound Board
L7.3A
EX GM HS NI NP SA SB
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Faultfinding tree & Repair facilities
ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF MA = Mono All MM=Multi Mono ND = ITT Nicam MSP3410D NB = ITT NICAM MSP3410B IT = ITT 2CS MSP3400 50 = TDA 9850 60 = TDA 9860 52 = BTSC TDA9852 55 = BTSC TDA9855 AKB VSD TUNER WHITE TONE GEOMETRY 0 0 > > > > S indication in hexadecimal form of the options settings of the relevant set.
5.6
SAM (Service Alignment Mode)
This menu is being displayed whenever SAM is entered. In SAM you are able to make tuning adjustments, Alignment of white tone, adjustment of picture geometry, Sound alignment ,VSD and AKB enable/disable (black current loop). The overview of the menu is shown below : General: The following items of the sub menus can be selected with the UP(+)/DOWN(-) arrow keys on the user remote control. Entry into the sub menus is executed with the VOL(+) / VOL(-) arrow keys. SAM MAINS MENU
Smart Picture Term Control Smart Sound Bimos Standby Surf Multi System
SC
ON/OFF
SS ST SU SY
ON/OFF ON/OFF ON/OFF AF = AP FULL MULTI SS = SINGLE SYSTEM AD = AP DUAL AM = AP MULTI 2N = Binorma 3N= Trinorma 4N = Fournorma
AUDIO
5.6.1
AKB
With the option AKB the "black current loop" can be enabled or disabled. ON =enabled, OFF = disabled.
5.6.2
TUNER
With the items TUN.FAO and TUN.FOB the speed ( time constant) for internal signals is set. The speed can be set to normal, slow or fast. The tuner sub menu contains the following information : For monitoring during alignment of AGC,YD,CL, IF-PLL, AFW. All entered data will be send directly to the video one chip; values are stored in EEPROM if this sub menu is left.
Tuner Volume Limiter Video Mute Remote Control External 1 External 2 TDA884X Family
TN VL VM W1 XT 2X 88
ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF AGC YD CL IF-PLL AFW TUNER 37 1 0 61 80 S
OPTION code OPT is the abbreviation of OPTION, this abbreviation refers to the following 12 digit hexadecimal option codes (BFDD FBEF 2C). The option code can not be selected. It only give an quick
5
AFA AFB
Faultfinding tree & Repair facilities
1 1 · · · DELTA WARM RED DELTA WARM GREEN DELTA WARM BLUE
L7.3A
DELTA WARM TEMPERATURE SUB MENU 0 254 249
11
5.6.3
White tone 5.6.4
The white tone menu contains the following information : MAIN WHITE TONE MENU The geometry menu contains the following information :
GEOMETRY
S NORMAL RED DELTA COOL RED DELTA WARM RED 37 0 0
HSH VSL VAM VSH VX
Horizontal shift Vertical slope Vertical amplitude Vertical shift Vertical Zoom Vertical Scroll E-W amplitude E-W parabola/width E-W cornerparabola E-W trapezium S-Correction Service blanking Delta HSH for 60 Hz Delta VAM for 60 Hz
NORMAL TEMPERATURE SUB MENU VSC EW S RED GREEN BLUE REMARK : Only one of the 3 items (RED, GREEN or BLUE) will be display on the screen. Via "scrolling" with the UP/DOWN keys the items can be changed. · · · NORMAL: Via this menu the NORMAL colour temperature alignment can be set. DELTA COOL : Via this menu the cool colour temperature alignment can be set DELTA WARM : Via this menu the normal warm temperature alignment can be set 37 37 39 PW CP TC SC SBL H60 V60
S HSH VSL VAM VSH VX VSC EW PW 32 32 32 34 13 39 54 46 39 41 52 0 10 10 Into the picture geometry menu, the first item will be highlighted and displayed. The value can be incremented or decremented by pressing the control right or left key. The rest of the parameters can be scrolled through by using the control up/ down keys.
Changing any of the items red, green or blue can be changed by first pressing the control left/right keys to highlight the desired setting. With the desired setting highlighted, the user can either increment or decrement the setting by using control up/down key respectively. All changed data will be stored into the EEPROM after returning to the service main menu via the OK key. The initial default value for all setting is 37. The factory settings of the colour temperatures are :
CP TC NORMAL DELTA WARM DELTA COOL 10500K 8200K R = 37 R=0 G = 37 G = 254 B = 39 B = 249 SC SBL H60 V60
14000K
R=0
G=1
B=3
DELTA COOL TEMPERATURE SUB MENU · · · DELTA COOL RED DELTA COOL GREEN DELTA COOL BLUE 0 1 3
12
L7.3A
5
Faultfinding tree & Repair facilities
if the screen is not working properly. The method is to use the LED pulses with as many pulses as the error number, followed by a time period of 3 seconds in which the LED is off. E.g. error code 4 will result in four times the sequence LED on for 0.25 seconds / LED will be off for 0.25 seconds. After this sequence the LED will be off for 3 seconds.
All changed data will be stored into the EEPROM after returning to the service main menu via the OK key
5.6.5
AUDIO
The sound adjustments sub menu contains the following information :
5.10
S AUDIO AUTO ST-NT SAP-NT LA WIDEB SPECT > 7 7 7 31 31
Hotel-mode
The L7.3 chassis has one special mode, called the hotel mode. In the hotel mode the following occurs: · · · Installation menu cannot be entered. When entering the hotel mode the maximum volume will be the current value. The set will always switch to a selectable channel when set is switched on.
Entering the hotel-mode : · · Select channel 38 Push the menu button on the local keyboard ( vol. + and vol. - ) and the OSD-button of the RC simultaneously for 3 seconds; then you are in the hotel mode.
The TDA9852 sub menu is only available if the BTSC sound IC is present. The settings can be changed by first highlighted the respective item using the control up/down keys and then increment or decrement the value by using the control right or left keys. The default value shown in the diagram are the normal values. For service purposes the normal values can be used NOTE: The value should not change unless it is absolutely necessary !!!! 38
Leaving the hotel mode : · Same as entering the hotel mode.
The OSD will display the hotel mode "on" or "off". HOTEL MODE SUB MENU " ON "
HOTEL ON
5.7
Dealer remote used as a Dealer Service Tool (DST)
With the DST, under mentioned extra service features can be executed. The main features are : TO · · · Direct entering SDM via the "DEFAULT" button on the DST. Direct entering SAM via the "ALIGN" button on the DST. Read the error buffer even if the OSD is not working at all. This is done via the blinking LED procedure 38 REMARKS: · · · Entry of the SDM and SAM via the DST is possible in all states, except from stand-by. All software is suspended till the dealer remote mode is left. The service mode status is left if : the stand-by command is received. 6 HOTEL MODE SUB MENU " OFF " HOTEL CHANNEL BLANK FROM 38 6
HOTEL OFF
5.8
Downloading of tuning data with the DST
Downloading of tuning data (programme number, frequency and system) via the DST is made possible. This downloading is ONLY possible in the version containing PLL tuning for Europe.
5.9
Blinking LED procedure
Via the DIAGNOSE 1 (for errorbuffer position 1) through the DIAGNOSE 5 (for error 5) commands of the DST, the error buffer can be made visible via the blinking LED. This is useful
6
6 Block diagram
Block diagram
CONTROL
1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
LED
L7.3A
C1 +5 VD
13
CVBS_EXT1 CINCH CONNECTIONS VIDEO-IN1
A5
A6
CHROMA-O/NTSC-SW C2 C3 SDA SCL (A4 - 14) (A4 - 15) (A6 - 15) (A7 - 15) (A8 - 15) (A4 - 16) (A6 - 16) (A7 - 16) (A8 - 16)
SOUND PROCESSING
M 11
CINCH CONNECTIONS A4-31
A8
BTSC DECODING
+ 8D 7316
A7
SOUND AMPLIFIER
+8V
A11 L OUT A12 R OUT +14V 7311 A13 18 A14 15 A19 5 IN2 OUT2 11 A24 1 +13V
2
A6-1 A6-2
7114
1 2 3 4 5 6 7 8 9 10 11 RESET (A1 - 19) X - TAL 12M HZ 13 14 16
BG-L STANDBY_AV1 MOD_L_IN2 LEFT OUT RIGHT OUT A6-1 A6-2 MUTE
7118
A4
LEFT OUT A6-70 MOD_L_IN1
42 41 40 39 38 37 36 35 34 33 7601 32 31 30 29 28 27 26 25 24 23 22
52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 NC 29 28 27
7620
LEFT-IN1
(A4-1) (A7-2) (A6-3) (A6-4) (A4-5)
V-TUNE
VOLUME MONO / STOBE / BG-L BG / L - or -BG / DK BLACK - STR - SW
7113
SDA SCL +8V CVBS sound MOD_R_IN2 A5-15 A5-16 A4-32 MUTE
7117
A5
A6-60 RIGHT OUT
3 4 5 6 7 8 9 10 11 12 13
MOD_R_IN1 RIGHT-IN1
A6-44
MONO OUT
2381
16 11
17 27
B2
OUT-L A7-45 A6-5 7310 MOD_L_IN2 MOD_R_IN2 MOD_L_IN1 MOD_R_IN1 OUT_L IC OUT_R 16 17 24 9 L I R N P U T 26 7
6 A21 3
4 A23 OUT1 13 A22 LA6-51 L+ A6-52
M 25 M 24
SERVICE SDM MODE
7115
A6
VIDEO OUT
A4-30
CVBS_EXT2 VIDEO-IN2
3349
B1 BTSC DECODING IC
21
OUT-R
IN1
A7-46
A6-40 A6-70 A6-60
EEPROM
A6-36 A6-40 A7-40
A6-5
MOD_L_IN2 LEFT-IN2
B3
2
(A6-6/A7-6) SID / STA / LL (A6-7/A7-7) INT / EXT (A6-8) (A7-9) (A7-10) (A6-11)
STAND-BY TREBLE BASS AV - MUTE
CHROMA-2 / STATUS (A4 - 18) RC5 +5 VD C6 REMOTE RECEIVER
DCV1
OUT2
10 A25
R+
A6-53
A6-40 A6-5 A7-5
MOD_R_IN2 RIGHT-IN2 10 8
IC 9
A8-45 A8-46
TONE CONTROL ?? 23 A18
7
DCV2
OUT2
8
R-
A6-54
A9
A7-52
4100
6 5 4
M16
A5-3 A5-8 A7-60
SCL SDA 7317
A5-16 A5-15
A5-16
SCL 7312 SDA A17 L1 L R7 16 +8V
2116
2 3
HEADPHONE/SPEAKER SWITCH 3143
7 3
MOD_L_IN1 MOD_L_IN1
C5 CHROMA-1 / BG/L (A4 - 17)
M9
17
A6-60 A6-70 A7-70
A5-15 +11V LOT
A7
2115 A7-53 4107
7 8 9
A10
L (L+R)
5 4 6
L OCAL
KEYBOARD
(A4 - 27) (A4 - 28) (A6 - 8) (A1 - 26) BS 1 BS 2
STANDBY
+5V
VFL (A3 - 20)
1 2 3 4 5 6 7
AMP_L AMP_R A7-47 A7-48 INT_EXT A5-7 SID_STA_LL A5-6
3142
R 2
3372 A16 6304 A15 R1
RIPPLE FILTER (ALC)
A7-51
FLYBACK (A2-21/A3-21)
BL _ TXT _ OSD (A4 - 22) R _ TXT _ OSD (A4 - 23) G _ TXT _ OSD (A4 - 24) B_ TXT _ OSD (A4 - 25)
18 19 20 21
A7-54
17
A8
R- 1
2
20 21 22 23 24 25 26
1102 1104
A1
FM AUDIO
A3
6303 7314
SERVICE SAM MODE
M28 M29
CVBS-SOUND A8-36
7600 (TXT)
~ ~ ~
1
56
DET
15
A7-44 A8-44
MONO OUT
A5-8
STANDBY-AVL
2353
55
2 L_EXT1 A7-49
(A4 - 13) CVBS TXT
-
2108 BG/L-D-BG/DK A5-4
2128
A2
I F (A4 - 33)
CVBS -SOUND (A6 - 36)
(A4 - 32)
(A6 - 31)
(A6- 32)
(A6- 30)
A4
VIDEO PROCESSING
(BIMOS 1C)
B
7225 - E TDA8374C
13 17
CVBS -INT
CRT MODULE
+200VA
CVBS - EXT2
CVBS -OUT
CVBS -EXT1
V3 (Y) V15b V16b
+8Vb 5260 7215
Y
28 V 10 (B - Y) _ OUT 14 V9 (R - Y) _ OUT 16
7255 TDA4665
-(R-Y) 64uS -(B-Y) 64uS
V 11
V 13
V 14
2 M7 C7 5 BC INFO 5 8
7225 - C TDA8374C
11 32 12 31 G- Y MATRIX
27
DOS Blank R G B
I4
I7 7 11
I1
UV 1336
1015
7225 - 5A TDA 8374C
48 49
11
PAL/NTSC
29 30 33
3 4
3216
10
DECODER
RGB
21 20 19 22
5
2
2
G
V16c
G 1 9 R
1 5 4 3 ONLY FST
TUNE
6016
~ ~ ~
SY
VIDEO DET
6
38
35 34 36
1275 1275
8 V 12 7
1 I2 C 3
1
R
+8Vb 7214
1206
5.5MHz
3 4 6
B
V15c V16a
B
+8Va 1207
6MHz ~
V 15 39 25 24 23 26
BC INFO
4 6
9
2 I3
RF-AGC 54
3211
V1
18
6015 2016
7204
V2
(A4 - 32) CVBS -OUT -1 (A5 - 13) CVBS -TXT
(A4 - 15) SDA (A4 - 16) SCL ONLY VST (A5 - 27) BS 1 B AND (A5 - 28) BS 2
SWITCH
3217
3 7
1208
6.5MHz
V-
BLACK-STR-SW
SAND - CASTLE
CVBS_INT A4 -29 CHROM_O / NTSC - SW I5
(A5 - 1)
BL-TXT_OSD
G-TXT_OSD
R-TXT_OSD
B-TXT_OSD
V15a
3208
SDA
SCL
HEATER
(A4 - 15)
(A5 - 15)
(A4 - 16)
(A5 - 16)
(A5 - 24)
(A5 - 23)
(A5 - 22)
(A3 - 37)
(A3 - 33)
(A5 - 25)
(A5 - 5)
1209 ONLY PAL/MULTI
FF C60
1
FF
4 2 3
3840
A1
MAINS SUPPLY
P1
+8V
*
3548
A3
SYNC - FRAME & VERTICAL DRIVE
+8V 3422 3423 6420 6421 2422 7420 +8V +8V
A2
LINE DRIVE
M60
1 2 3 4
!
5545 5 10
* CRT DISCHARGE CIRCUIT
3543
6542 2541
6543
!
SK 1
!
1500 T 5 AH
!
5500
6502/05 AC 2508 4 3 DC 7518
STH8NA60F
5574
3544
7542 2542
CRT DISCHARGE (A4 - 38)
+140V VBATT +8V
!
3
5445
FOCUS
220V~
2
6590
P11
3421 +10V / 14V
!
3430 H DRIVE TO A3 - 42
42 37
!
3430 7225 - D TDA8374C/ N337 HOR DRIVE
G
+140V VBATT
G2
SYNC
EHT INFO
3420
7520 MC44603AP 7520 3
O SC B UFFER
P3
12 5573 16
P10
6570 2571 140V VBATT
7225 - 5D TDA8373/74
43 SYNC
L3
7460 BU1508DX 7461
L1
10 1 9
EHT INFO +11V LOT
6486
8
2486 2484
6550
EW DRIVE TO A2 - 43
G
L7 +5V LOT
P4
!
3518 3525
40
40
S1
16kHz 44
16kHz 7
6488
L8 (A2-2)
2551
1 7 8 2 3528
P8
5551 +140V VBATT (A4 -33) SANDCASTLE (A5 -21) +13V
HFB
51 52
G
L3
45
F4
HOR.
18 6560 6540 9 13 14 2561 7541
TDA8139
P13
DEFECTION
41
VERTICAL
+11V LOT 6401 2403
F4
VFB A5 - 20
5480 HEATER 6463 2469 3467 3466 6464 6467
L9
47 46 50
HZ
6402 9401
E/W DRIVE +48V LOT (ONLY FOR 29")
45
X-RAY PROTECTION
P15
50
4
14
P9
+5V 9 8 3 2563
EHT-INFO
F2
6403 7401 TDA9302H
7 1 2 6 3
M4
!
+11V LOT 3479
EW CONNECTION
5457 6466 2457
6
6490 2489
-11V LOT
8 1 5 2540 4 2 3575
3585 2 1 9V 1 3574
3439
3438
+8V 3440
6449 3448
5
(A2 - 41) X-RAY PROT 3437
5 F3
DEFECTION
0V6 STB +8V
P14 RESET STANDBY
4
P12
2562
-
VERT.
3441
+ Op.Amp
4
3449
6450
L 10
2 1
3470
3471
7470 2471
5470 6465
HFB( A5 - 21) +200 TO CRT PANEL
6485
11
3485
3409 2404 2404
6470
PROTECTION E/W
5463
12
+48V LOT
(A5 - 19)
F1
6487
5487
3488
L 11
3577 2 3
-11V LOT EW DRIVE (FROM A3 - 43) 3407
L4
V BATT ADJUST 140V
29" ONLY +11V LOT
(A5 - 26)
6481 6480
PROTECTION (A5 - 12)
8.6532010_006.eps 110398
EHT
V G2
A4 - 14 A5 - 14
(A2 - 37)
EHT
7216
7217
EHT INFO
+200V
+200VA
V FOCUS
2403
6
Block diagram
A4 C1 5.0V DC I3 I3 I4 0.5V / div AC 0.1ms / div A5 C2 1.6V DC 4.0V DC 5.0V DC 5V / div DC 5ms / div P3 P2 P14 P14 P15 P15 S1 8V1 DC 0V6 DC 5V DC 5V DC
L7.3A
14
V15
A1
MAINS SUPPLY
P1
+8V
*
3548
A2
LINE DRIVE
!
5545 5 10
* CRT DISCHARGE CIRCUIT
3543
6542 2541
6543
Vbatt
!
SK 1
!
1500 T 5 AH
!
5500
6502/05 AC 2508 4 3 DC 2 7518
STH8NA60F
I5 0.5 - 30V DC I7
500mV / div AC 10µs / div V15a
220V~
5574
3544
7542 2542
CRT DISCHARGE (A4 - 38)
A3 +8V
SYNC-FRAME & VERT. DRIVE
A4
VIDEO PROCESSING 5201 5203 +8VB +8VA
6590
P11
+8V
A
+10V / 14V
P3
+8V
0.5V / div AC 0.2ms / div A6
1V / div DC 0.1ms / div C3
50mV / div AC 500ms / div L1
0.2V / div DC 5µs / div P3
2V / div DC 20µs / div V1
500mV / div AC 10µs / div V15b
7520 MC44603AP 7520 3
O SC B UFFER
12 5573 16
P10
CRT DISCHARGING
6570 2571 140V VBATT
A5 CONTROL +5VD
P4
6550
!
3518 3525
2551
1
P8
5551
+140V VBATT
+5V
RESET STAND-BY
A
A
7 8
18 6560 3528 6540 9 13 14 2561 7541
TDA8139
P13
Vbatt
+13V
P15
A6 SOUND PROCESSING
5V / div DC 10ms / div A7
1V / div DC 0.1ms / div C4
100V / div DC 20µs / div L2
0.1V / div DC 5µs / div P4
500mV / div DC 10µs / div V2
500mV / div AC 10µs / div V15c
4 14
2
+5V 3585
+8V SOUND AMPLIFIER
8 1
P9
A
5 2540 4 2 3575 1 3577 2 3 9V 3574
2 1 4
9 8 3
2563 0V6 STB +8V
P14
A7
+13V 5300 +8V +14V
+8VD
50mV / div AC 0.2ms / div A8
1V/ div DC 5ms / div C5 3V tt 12 MHz C6 5V tt 12 MHz
2V / div DC 20µs / div L3
2V / div DC 5µs / div P4
1V / div DC 10µs / div V3
500mV / div AC 10µs / div V16a
2562
P12 RESET
(A5 - 19)
C NICAM PANEL 5203 +8VA 5205 +5VA 5204 +5VB 8.6532010_008.eps 090398
STANDBY (A5 - 26)
+8V
V BATT ADJUST 140V
50mV / div AC 0.2ms / div A9 F1
200mV / div DC 10µs / div L6
2V / div DC 5µs / div P5 P5 13V DC 11.5V DC
500mV / div DC 10µs / div V4
20V / div DC 10µs / div V16b
A2
50mV / div AC 0.1ms / div A18 A18 1.2V DC 0V DC 0.5mV / div DC 5ms / div F2 5V / div DC 5ms / div L8 5.0V DC P6 500mV / div DC 10µs / div V11 20V / div DC 10µs / div V16c
LINE DRIVE
+8V +140V VBATT +140V VBATT
3
!
5445
EHT
B
CRT PANEL +200V ANODE CRT FOCUS VG2
!
3430 7225 - D TDA8374C/ N337 HOR DRIVE
G
FOCUS
HEATER
L9 -11.7V DC L10 194V DC 0.5mV / div DC 5ms / div 1V / div DC 5µs / div P1 P1 270V DC 270V DC P6 200mV / div AC 10µs / div V12 20V / div DC 10µs / div
G2 L3
7460 BU1508DX 7461
L1
10 1 9
EHT INFO +11V LOT
VIDEO PROCESSING 5003 +VB +5V_LOT A4
40
6486
DEFECTION
8
2486
A19
F3
L7
A5
CONTROL +5V_LOT HFB PROT. +11V_LOT
16kHz
+5V LOT
HOR.
6488
7
2484
HEATER
L8 (A2-2)
50mV / div AC 0.2ms / div A20 14.8V DC
10V / div DC 5ms / div F4 N1 N2 N3 10V / div DC 5ms / div 4.1V DC 4.2V DC 0.2ms AC
1V / div DC 10µs / div P9 P10 P10 2V DC 120V DC 120V DC
200mV / div AC 10µs / div V13
E/W DRIVE
45
5480 6463 5457 EW CONNECTION 6466 2457 6490 2469
3466
6464 6467
L9
X-RAY PROTECTION
3467
6
A2
LINE DRIVE
+11V LOT 3479
-11V LOT
+11V_LOT
2489 3471 2471 7470 5470 6465 5463
PROTECTION E/W
500mV / div AC 10µs / div P2 P11 P11 14V DC 14V DC
EW DRIVE
3470
6449 3448
5
HFB( A5 - 21) +200 TO CRT PANEL
A3
3449 3485
6450
L 10
SYNC-FRAME & VERT. DRIVE + 48V (29") -11V_LOT +11V_LOT X-RAY PROT.
A21
I1
V14
6470
11
6485
+48V LOT
6487
L4
12
5487
3488
L 11
A8
P13 50mV / div AC 0.1ms / div 500mV / div AC 10µs / div 5V / div DC 5ms / div P13
10V8 DC 10V2 DC 500mV / div AC 10µs / div
CL 86532018_010.AI 020498
(FROM A3 - 43)
29" ONLY +11V LOT
BTSC DECODING +11V_LOT
6481 6480
PROTECTION (A5 - 12)
8.6532010_007.eps 090398
6
Block diagram
2116 A5 A10 2115 5500
M16 4 1
L7.3A
15
A4 C1 5.0V DC I3 I3 1.6V DC 4.0V DC 5.0V DC 5V / div DC 5ms / div P3 P2 P14 P14 P15 P15 S1 8V1 DC 0V6 DC 5V DC 5V DC 500mV / div AC 10µs / div V15a V15
A8 2621
2622 C3 C2 C4 3671 5601 C1 C6 7600 7601
0.5V / div AC 0.2ms / div A6 0.5V / div AC 0.1ms / div A5 C2
I4
I5 0.5 - 30V DC I7
3142
3143
SK
A
1V / div DC 0.1ms / div C3
50mV / div AC 500ms / div L1
0.2V / div DC 5µs / div P3
2V / div DC 20µs / div V1
500mV / div AC 10µs / div V15b
1500
1681 C5 B2 6510 6590
3355
A A
7315
11 21
5V / div DC 10ms / div 1V / div DC 0.1ms / div C4 100V / div DC 20µs / div L2 0.1V / div DC 5µs / div P4 500mV / div DC 10µs / div V2 500mV / div AC 10µs / div V15c
3515
P2
P8 P7 P4
7520
7 6 10 3 14 1
P11 P6 P9 7541 P13 P12
2 6 8 9
B3
B1
A7
A
P1
P5
5545 2508 9510 P3
A14 9319 7311 A20 A19 A25 3427 S1 V9 7255
16 14 12 11 4 5 10 8 11 13 1 3
7310
A13 9323 A15 A16 A11
50mV / div AC 0.2ms / div A8
1V/ div DC 5ms / div C5 3V tt 12 MHz C6 5V tt 12 MHz
2V / div DC 20µs / div L3
2V / div DC 5µs / div P4
1V / div DC 10µs / div V3
500mV / div AC 10µs / div V16a
2388
A18 A21 A24 A22 A23
A17 A12
10 7
23 24 26
P14
P15 5520
9326
50mV / div AC 0.2ms / div A9 F1
200mV / div DC 10µs / div L6
2V / div DC 5µs / div P5 P5 13V DC 11.5V DC
500mV / div DC 10µs / div V4
20V / div DC 10µs / div V16b
P10 L4 3473 3476 L5 2465 L1 L10 L8 2485 2484 2460 4126 L3 V3 A3 V1 I1 A1 2486 6402 L9 F2 3409 F3 F4 2104
V10 V12 9237 V11 A3 7225
28 29 15 38 13
50mV / div AC 0.1ms / div A18 A18 1.2V DC 0V DC
0.5mV / div DC 5ms / div F2
5V / div DC 5ms / div L8 5.0V DC P6
500mV / div DC 10µs / div V11
20V / div DC 10µs / div V16c
L9 -11.7V DC L10 194V DC
V4 V2
A19
0.5mV / div DC 5ms / div F3 P1 P1 270V DC 270V DC
1V / div DC 5µs / div P6
200mV / div AC 10µs / div V12
20V / div DC 10µs / div
M9
6 1 55
A2 I7 I4
11 6
50mV / div AC 0.2ms / div A20 14.8V DC
10V / div DC 5ms / div F4 N1 N2 N3 10V / div DC 5ms / div 4.1V DC 4.2V DC 0.2ms AC
1V / div DC 10µs / div P9 P10 P10 2V DC 120V DC 120V DC
200mV / div AC 10µs / div V13
LOT
3480 L6 2487 L11 F1
L7 2489
M11
TUNER
2105
2008 I5
500mV / div AC 10µs / div P2 P11 P11 14V DC 14V DC V14
9405 6110 A5 A6 A4 1
A21
I1
I3
1
P13
CL 86532018_001.AI 010498
10V8 DC 10V2 DC 500mV / div AC 10µs / div
CL 86532018_010.AI 020498
50mV / div AC 0.1ms / div
500mV / div AC 10µs / div
5V / div DC 5ms / div
P13
7
7 Diagrams and print lay-outs
Diagrams and print lay-outs
L7.3A
16
7
Diagrams and print lay-outs
1 2 POWER SUPPLY
1080
3 4
L7.3A
5 6 7 8
17
9 10 11 12
M1 B2 M2 A2 SK1 B2 1080 A5 1500 B3 1572 C8 2500 C3 2501 B3 2502 B5 2503 A2 2504 A3 2505 B5 2507 B6 2508 B6 2510 B7 2511 C7 2517 C5 2518 C6 2520 E2 2521 G4 2522 G3 2524 C5 2529 D5 2530 G4 2531 E2 2532 F2 2533 F2 2540 E6 2541 C10 2542 C11 2545 H7 2550 A10 2551 B11 2553 E11 2554 D10 2560 C8 2561 D9 2562 F11 2563 E11 2570 B9 2571 A9 2572 A8 2573 F8 2574 F8 2575 E8 2576 F7 2884 A7 2885 A6 3500 C3 3501 B4 3502 C2 3503 A4 3504 A3 3505 B3 3506 C5 3507 C5 3509 B7 3510 C4 3511 C7 3512 G3 3513 G3 3514 G6 3515 B5 3516 D7 3517 C6 3518 D7 3519 D7 3520 E2 3521 H4 3525 C5 3528 E6 3529 D6 3530 D4 3532 F2 3534 G2 3536 E2 3537 D3 3542 C2 3543 C10 3544 C10 3545 C10 3546 C10 3547 C10 3548 C11 3552 E10 3553 E10 3554 F9 3565 E11 3571 F9 3572 F9 3573 F9 3574 F8 3575 F8 3576 E8 3577 F7 3578 F7 3585 E8 3595 A6 3596 A6 4500 F11 4501 G2 5500 B4 5502 B4 5515 G3 5516 B7 5518 C7 5520 B10 5540 E7 5545 A7 5550 B9 5551 B11 5572 A9 5573 C8 5574 A8 6500 B4 6501 B4 6505 B5 6507 G6 6508 G6 6510 C4 6511 C7 6514 C6 6515 B6 6517 B7 6540 E7 6542 C10 6543 C10 6550 B10 6560 C8 6570 A9 6584 A5 6590 A9 7518 C6 7520 D2 7541 D9 7542 C11 7570 G8 7581 E8 7588 A6 9500 B2 9501 C2 9502 B4 9503 C4 9504 B3 9505 B5 9506 B5 9507 A10 9508 B4 9509 C4
3
4
FOR USA ONLY
1N4148 6584
BC858B 7588
3595 22K
+11V_LOT
M2
2503 2504
RES
ZPB
3503
2m2
8 5
12 13
EGP20D 6570
2571
2 1
DEGAUSSING COIL
2n2
A
1
2
SPO01
t+
1
3504
2885 22n
3596 1K
2884 47u
5545 W7054 9 10
P11 5574 2u2 5572 100MHZ 6590 9507
+14V
A
2550 330p 6550 BY229X-600
P1
2572
140V
+VBATT
P1 P1 P2
270V DC 270V DC
P5 P5 P6
13V DC 11.5V DC
2 9504
3
t B57237 2508
4
300V
14 16 18
100p
EGP20D 2570 RES 5550 100MHZ
GND_AUDIO
2505
9506 3515
3
3509 33K
5520
2551 4m7
5551 27u
140V
VBATT
330u
2n2 2501 6501 6500 3501 470R 2502 9508 2 5500 3
V 2500
2
9500 M1 2 1 2
MAINS 150 - 276 V SINGLE RANGE 90 - 276 V FULL RANGE
BYD33J 9505
1n5
3505 DSP 1500 1 3
470n
T5AH
100MHZ
B
SK1 4
33n
BZX79-C30
6505 GBU4J
6515
6517 BYD33J
2510 5516
P10
B
+8V
9502 2 5502 3
2n2
3545
100MHZ
6542
1M 3547
10K
2507
5518
BAV21
3500
220K 2541
3543
2u2
9503 3510
6543
3507 2R2 3525
1n 3517 2517 10K
1N4148
MG38000 9501
3542 4M7
1 4 DMF-2405 9509
3511
299V
1K
1
4 DMF28
1n5 1R
2518 470p 2511
BYV95C 100MHZ
5573
3506
3548 220R
0V4
CRT_DISCHARGE A4-38
5V / div DC 5ms / div P2
1V / div DC 5µs / div P6
EGP20D
2560
330p
C
6560
STH8NA60FI 7518
1V1 0V
330p 6511
3546 47K
3544 22K
P2
BZX79-C20 3K3 6510
13V1
T5AH MRT
2524
330p
1572
33R
BZX55-C18
33K
6514
7542 BC857B
8V1
C
3502
2M2
2542
3530
P3
CRT_DISCHARGE CIRCUIT
3518 R22 3519 1R 3516 1R
100u
2554
1m
D
7520 MC44603A
2529
2561
P13
5V / div DC 5ms / div P3
1V / div DC 10µs / div P9 P10 P10 2V DC 120V DC 120V DC 14V DC 14V DC
3537 10K
2V5
220n 7541 TDA8139 7
10V8 (10V2)
D
P15
OUT1 9 RESET_ 6
5V1 +5V
100n 16
Vref Iref
14V3 (12V8) 1
3529 68R
5540 4U7
1 IN1
10V8 (10V2)
2 IN2
OUT1 RESET OUT2
Rref
Vcc 18V SUPPLY & Vref UVLO1 REFERENCE enable INITIALIZATION BLOCK BLOCK
P5
3565
MANAGEMENT Vdem out Iref
100R
3585
8 Vdem in
3520 82K 2520
0V2
DEMAGNETICATION
2V 3V 8V1 (0V6)
PROTECTION
4V9 (0V)
DELC 3 OUT2 8
10K
2V5 (0V1)
PROG
REFERENCE
P12
RESET A5-19
82p
2553
2563
2531 1n P6 3536 18K 3532 6K8 2532
9 Sync C T
OSCILLATOR Vosc
3576
RES 2575
100n
2V6
10
Iref STANDBY
(REDUCED FREQUENCY)
15 RFstandby
Set Latch Reset
Q
BUFFER
OUTPUT 3 1V (0V1)
100R
6540 BAV21
2540 100u
15V1 5 (13V6)
1 10V4
GND
100u
22n
E
0V
Vosc prot
Vc
2 (13V2)
14V4
3528
7581 CNX82A
(9V3)
4 DISAB
DISABLE
E
P14
+8V
5 3553
3554 1K5
0.2V / div DC 5µs / div P3
P11 P11
2V5
3552
2562 220u
GND 4 Vovp out
0V
P4
standby 12 RP
0V7
2V2 4 (2V8)
2
9V3 (8V5)
120R
3K3 4500
THERMAL
SHUTDOWN
Vref
Vcc
P13 P13 0.1V / div DC 5µs / div P4 P14 P14 P15 P15 2V / div DC 5µs / div P4
10V8 DC 10V2 DC 8V1 DC 0V6 DC 5V DC 5V DC
F
470p
2.5V
14 VOLTAGE
2V4 FEEDBACK
ERROR
OVERVOLTAGE MANAGEMENT
3577
100R 3578 2576 3575 6n8 1K
STANDBY A5-26
AMP
2574 RES 2573
9V
1
3571
+VBATT
CURRENT SENSE
OVERVOLTAGE
10K
PROTECTION
F
160K 3574 33K 3573 3572
VBATT ADJ 140V
2533 2n2
4501
13 E/A OUT
2V8 (1V9)
6
2V1 (1V8)
BYD33J
FOLDBACK FOLDBACK INPUT CURRENT SENSE INPUT
6508
Dmax & SOFT-START CONTROL Iref
UVLO1
33n
3
2K7 470R
P7
Vref
3534 15K P9 3512 15K 3513 180K 5515 2u2 2522 3n3 2521 3n3
0V2
7570 TL431CLP
Soft Start & Dmax
2V4
BYD33J
1u
2V4
3514 820K 330R 3521
6507
G
1V1
5
P8
7
2530
11
0V
2
G
2545 1n5
EAR
H
--V OPERATION MODE
GND HOT GROUND
H
(--V) STANDBY MODE
CL 86532018_012.AI 010498
2V / div DC 5µs / div
1
2
3
4
5
6
7
8
9
10
11
12
CL 86532018_002.AI 270398
7
Diagrams and print lay-outs
L7.3A
18
7
Diagrams and print lay-outs
1 LINE-DRIVE
DIVERSITY TABLE FOR ALL ITEM NO. MARKED WITH * ITEM PHILIPS TUBE 25"(W E/W) 390n 1n --8n2 10n --18n 470p 470n 2u2 47u 560n ----33K 220K 100K 1K 10R 10R 100R 330R 82K --312813820571 33uH 822800129531 --312813834011 311233830531 --39uH BYW95C/20 BZX79-C9V1 1N4148 --MTP3055 YES ----YES --YES PHILIPS TUBE 29" W/O E/W 390n 560p --9n1 ----------------220u 4R7 ----------------43K 4R7 312813820601 27uH 312813851703 --------47uH ------BYD33D ----YES YES ------PHILIPS TUBE 29" W E/W 360n 820p 2u2 9n1
L7.3A
19
2
3
4
5
6
7
8
9
10
11
A
2457 2463 2464 2465 2466 2467 2468 2470 2471 2472
VBATT
A
L6
EHT_INFO A4-37 A2-1
3482 9451
VBATT
--22n 33n 470p
9453 3453
RES
3480 2480
3481
68K
5451 27u 2451 22n 3451 22R 2490 470p 6486 M5 5445 1372.0017A
EHT FOCUS G2
TO B CRT PANEL
2450
--2u2 47u --220u --220K --82K 1K 4R7 4R7
47u
IM40 1 2
for ITV purpose
3R3
B
3486 1R 3487
2486
2473 2475 2487 3453 3470 3471 3472 3473 3474
L7
+11V_LOT
B
BYV27-200
1R 3490 3R3
HORIZONTAL DEFLECTION COIL
1 4
6488 BYD33D
7480 BC337-25
7V1 4V9
L8
+5V_LOT
C
3475 3477 3479 3481 3488 5445 5451 5457 5463
5V6
3458
100R 330R 43K
1K
3493
L.LIN 5457
C
10 9 1 8
3495
10R 6489 5480 BZX79-C5V6
+8V HEATER A2-2
4R7 312813820581 27uH 312813851703
10u
BYD33J BYD33J 6466
3454
2457
33K
D
5465 5470 5471 5480 6461 6470 6472 6487 7470 9453
----1mH 47uH BYW95C/20 BZX79-C9V1 1N4148 BYD33D MTP3055 YES YES ---
2458
7 6
6463 1N4148
3465 10R
3466
15K
312813834021
RES
7482 BC857B
8V1
6464 RES
6467
XRAY_PROT A3-41
9V4
D
1u 3496
6465
11 9460 3 2475
VBATT
2491 470p 6490 BYV27-400
3491 1R 3492
2489
10K
5
3497
L1
10K
0V
RES
L9
-11V_LOT
12
2 CU15 1
4 5465 3
9461 9462 9463 9464
CU15
5463
BY228/20
3462
6K8
2465
YES ---
L2
138V
6460
8K2 6485
9461 RES
6450
7460 BU1508DX
2463
0V1
9462
---
220p 3448
3449 3K3
6449
9460
2448
1N4148 1N4148
E
1R
470u
+8V
E
HFB A5-21
L10
+200V
3485
2485
47n
47n
3463
9463
2464 2u2 9464
6461
47R
0V
4R7
3
4
4u7
BYD33D
2461
1n
F
L3
HDRIVE A3-42
F
29" ONLY
+11V_LOT
+11V_LOT 34V1
ONLY FOR SETS WITH E/W CORRECTION 5470
L11 9487 5487 3488 1R 2487 220u
+48V_LOT EHT_INFO A2-1 PROT +200V
6487 BYD33D
2481
3483
2460
6n8
0V
3470
BZX79-C9V1 6470
3471
2471 5471
2472 2u2
12V
12V
6481
6480
470n
0V4
6K8
7461 BF819
4
1
22
M60 1 2 3 4
TO B CRT PANEL C60
3478 100K
EHT_INFO
2470 470p 3472
G
6471 RES
6473
EW_PROT
3484 10K
2473
0V
RES 6472
3477 100R
47u
7481 1N4148 BZX79-C39 BC557B BEAMCUR_PROT
GND 7480 A5-12 HEATER A2-2
G
L5 3473
14V8 3V5 0V1
3474
4R7 3475
4R7 3476
EWDRIVE
L4
H
A3-43
RES
1K 7470 MTP3055EFI
1N4148
H
CL 86532018_013.AI 010498
M5 B5 M60 G11 2448 E7 2450 B4 2451 B5 2456 F1 2457 D6 2458 D6 2459 C5 2460 G1 2461 F1 2462 F1 2463 F4 2464 F5 2465 E4 2466 F4 2467 F4 2468 F5 2469 D8 2470 G3 2471 G4 2472 G4 2473 G5 2475 E5 2480 B9 2481 G7 2484 C9 2485 F9 2486 B9 2487 F9 2488 C8 2489 E8 2490 B7 2491 D7 3448 E7 3449 E8 3451 B6 3453 B5 3454 D5 3458 C5 3461 F1 3462 E2 3463 F3 3465 D8 3466 D9 3467 D9 3470 G3 3471 G3 3472 G3 3473 G3 3474 H4 3475 H4 3476 H4 3477 G5 3478 G7 3479 G3 3480 B8 3481 A8 3482 A9 3483 G6 3484 G6 3485 F8 3486 B8 3487 B8 3488 F8 3489 C8 3490 C8 3491 D8 3492 E8 3493 C9 3495 D8 3496 D8 3497 D9 5445 B6 5451 B6 5457 C6 5460 F2 5461 F2 5463 E6 5465 E6 5470 F4 5471 G4 5480 C8 5487 F8 6449 E9 6450 E9 6460 E4 6461 F4 6463 D7 6464 D9 6465 D5 6466 D5 6467 D10 6470 G3 6471 G4 6472 G5 6473 G5 6480 G7 6481 G6 6485 F7 6486 B7
150R
2488
470u 3489
2459
680p
2469
3467
2484
BYW95C/20
4K7 5460 2 U10 1
4
5461 2 CU15 1
2456
2462
3461
3
2466
1
2
330R
3479
3
4
2467
2468
5
6
7
8
9
L1
RES
100n
470u
100n
27K
6487 F8 6488 C7 6489 C9 6490 E7 7460 E3 7461 G2 7470 G3 7480 C9 7481 G6 7482 D8 9451 A6 9453 B5 9460 E5 9461 F5 9462 E5 9463 F5 9464 F6 9487 F8 IM40 B4
10
L2
11
L3 L6 L8 5.0V DC L9 -11.7V DC
100V / div DC 20µs / div
2V / div DC 20µs / div
200mV / div DC 10µs / div
5V / div DC 5ms / div
CL 86532018_003.AI
7
Diagrams and print lay-outs
1 2 3 4 5 SYNC/FRAME/VERTICAL DRIVE
L7.3A
20
6
7
8
9
10
11
12
A
HDRIVE A2-42 EWDRIVE A2-43
+8V +8V
A SYNC
3422 10K
8V1
+8V
B
2422
4R7
BAV21
BZX79-C47
3430
EHT_INFO A4-37
3423 2K2
6420
6421
8V1
BC857B 7420
3V3
B
2431 100n
2430
2420
3428
7225-D TDA8374C/N3
2429
2428
4n7
1u
10K
VP
4n7
1M
3431
3V3
42
G
7V8
37 40
10u
3420
C
HFB A5-21
2427 33p 3427 33K
A4-33
43
3V9
C
50Hz
0V4
3429 33K S1
41
0V5
45
3V4
3436 1K
51
3V8
G 50Hz
52
100n 3426
2425
1n 2426
3V8
D
XRAY_PROT A2-41
39K
F4 46 47
+8V
50
44
1V3 1V3 2V
D
BZX79-C39 6402
2442 47n
3442 680K 3443 1M 3439 10K
FRAME/VERTICAL
10n 3437 2441 2437 2440 10K
6401
2403
1n
1n
+11V_LOT
9401
+48V_LOT (ONLY FOR 29")
2401
100n
2404
-11V5
F2 3440 1K 3406 1K
3 FLYB
3405
1 IN-
FLYBACK GENERATOR POWER AMPLIFIER OUT 5
0V2
BYD33D
7401 12V 11V9 6 TDA9302H 2 VSUP VSUPO
6403
F3
2405
470p
0V9
7 IN+
220R
3407
2407
470p
-12V4
3412
RES
F
ITEM 2403 3405 3407 6402 7401 25" 100u 2k2 2k2 BZX79-C18 TDA9302H
3441 1K 29" --1k8 1k8 BZX79-C39 STV9379F
3408 1K F1
0V9
3410 1R5
GND
THERMAL PROTECTION
3409
100p
E
BYD33D 100u
E
M4 F11 2401 E8 2402 F9 2403 E9 2404 E10 2404 F9 2405 F7 2407 F7 2408 G10 2420 C6 2422 B5 2425 D5 2426 D5 2427 C4 2428 C5 2429 C4 2430 B6 2431 B7 2437 E5 2440 E6 2441 E6 2442 D4 3401 G10 3402 G10 3403 G10 3405 F7 3406 E7 3407 F7 3408 F7 3409 F10 3410 F10 3411 G10 3412 F10 3420 B5 3421 B6 3422 B5 3423 B4 3426 D5 3427 C4 3428 C5 3429 C5 3430 B6 3431 C7 3436 C7 3437 E5 3438 D5 3439 E5 3440 E6 3441 F6 3442 D5 3443 E5 6401 E9 6402 D9 6403 E10 6420 B5 6421 B5 7225-D C5 7401 E8 7420 B6 9401 E9
1n
3421
1K
3438
33K
3K3
VFB A5-20
4
2404 220n
M4 1 2
F
VERTICAL DEFLECTION COIL
-11V_LOT
2402
100n
220R
3411
SANDCASTLE
3401
3402
2408
RES 3403 3R3
3R3
G
F1 F2 F3 F4 S1
3R3
G
H
0.5mV / div DC 5ms / div 0.5mV / div DC 5ms / div 10V / div DC 5ms / div 10V / div DC 5ms / div 2V / div DC 20µs / div
CL 86532018_004.AI 270398
H
CL 86532018_014.AI 010498
1
2
3
4
5
6
7
8
9
10
11
12
7
Diagrams and print lay-outs
1 2
PAL/NTSC/SECAM PROCESSING
L7.3A
21
3
4
5
6
7
8
9
10
11
12
VIDEO PROCESSING (BIMOS-IC)
A5-13 CVBS_OUT A4-32 A4-34
CVBS_TXT [R_Y]_OUT [B_Y]_OUT
SANDCASTLE
A
V2 7225-E 3V TDA8374C/N3 38 13
3V9
7204 BC847B 3209 100R 3208 470R
3V1
+8V
3255
212010891663 1K 212010891663 1K 212010891663 1K
NOT USED NOT USED NOT USED
A3-33
* Ref Des
3256 3257
AP_USA_LATAM
EUROPE
8V1
9203
3251
2V3
* 3218
V3 3207
Ref Des
CINCH 212010891663 1K
OTHER_VERSIONS NOT USED
10M 2248 1n 2249
V9
10K
3248
7255 TDA4665
V11
V12
A
16
1V4
SIGNAL CLAMPING
11
LINE MEMORY SAMPLE & HOLD LP
2V9
V1
CVBS_INT
2213 100n 2214
2206
Y
28
2V9
2207
47p
B
CVBS_EXT2
17
3V4
100p
A4-29 A6-30
16 2209 100n
220R V4
1n 3249
+8V
V10 14
1V4
SIGNAL CLAMPING
100n 2200 100n
0V1
10M 3254 220R
12
LINE MEMORY FREQ. PHASE DETECTOR DIVIDER BY 192 LP 6MHZ CCO DIVIDER BY 2 SAMPLE & HOLD LP
2V9
3253 10R
BZX79-C5V1 2254
B
29 11
3V4
9
5V
CVBS_EXT1
SVHS
PAL/NTSC
2V4
A6-31
10
30
2V4
5
0V6
SANDCASTLE DETECTOR
2 6 13 15 4
0V
33 9
6V7
35 34 36
2V5 2V5 5V
3273
2273 100n
ONLY FOR TDA8373
SY
0V2
4200
4201
3252 10R 5252 5u6
2252 2251 22n 22n
22n
0V
2212
22n 2211
2275
10
0V
1
5V1
2u2
15p
2272
3M575611
3n3
C
7277 BFS19
CHROMA_2_STATUS A5-18
100K
0V
7
0V
8
0V
3
C
CRT_DISCHARGE A1-38
4204
BAS216
BAS216
6263
6264
8K2 7278 BFS19
VIDEO CONTROL
6265
7225-C TDA8374C/N3 4202 27
2V9
BAS216
3277
HC-49/U 15p 3M579545 1278 HC-49/U 3M582056 2278 15p
1275
1277
2277
V13 M7
R G B
2221
[R_Y]_OUT
21
G-Y MATRIX RGB
3V3
3225 3227 47R 47R 3229 47R
EHT_INFO A2-37 A3-37
32
2V4
1 2 3 4
TO B 0F CRT PANEL C7
5206 5u6 1206 3 1
4205
CHROMA_1_BG_L
3278 8K2 7279 BFS19 3279 8K2
100n2222 100n 4203
20
3V3
D
31
2V4
CVBS_OUT A4-32 A6-32
A5-17
A4-34
[B_Y]_OUT
19
3V3
1279
2279
A4-35
SDA
3220 100R 3221
OFF
22 8
4V1
V14 V15
BC_INFO
D
CHROMA_0_NTSC_SW A5-14 A4-14
HC-49/U 15p 3M575611 FOR TRINORMA ONLY
A5-15 A4-15
SCL
I C
2
3V2
5 6
7
2261
4V1
3224
+8V
ON
4u7
A5-16 A4-16
100R 150K 3223
0V
3V2 7260 BC857B 1V2
TPS 2 1207 3 1
5205 10u
+8V
3210 470R
2226
1u 2228
100n
3265
5V
39
25 24 23 26
3V6 3V7 3V7 0V1
18
5V3
22R
E
TUNER/ SAW/ BANDSWITCH
I4 5003
2002 100u 2013 100n
+5V_LOT +VB
3263
BLACK_STR_SW
0V7
A5-5
3280 2285 47n 2284 47n 2283 10K
1K7220 BC847B 0V
A5-25 A5-24 A5-23
0V
6260
3264 220K
EHT_INFO +8V
TPWA 2 1208 3 1
B_TXT_OSD G_TXT_OSD R_TXT_OSD BL_TXT_OSD
6261 47n 1N4148
2260 1u
3261
5203 22u
47K TYPE 5260 3 2 1
s1
6MHZ5 2
2V4 2V4
470R
2216
3211
1N4148
CVBS_INT A4-29
E
5u6
I3
A5-22 CHROMA_0_NTSC_SW A4-14
3255
1K 3256
1K 3257
1K 3218
3234
1K
3262
8 7
3V 1V3
2008
1V8
F
SCL
100R
3206
3022 100R 9006 3020 100R 9005
2011 100p
1
NC
7
9
NC
*
3040
IF 2V7
*
*
2040 10n
*
2K2
BC857B BC857B 7217 7216 3
O I G
2R2
3212
3V 1V6
1K
A4-14
9202 5202 100u
2215 220n 2224 220u
+8VA
1 1209 TPS
100n 4003
2005 100p
AGC
9V4 TU 4V8 AS 0V SCL 0V SDA
VS
VTS
2
6
3260 4 10K
2
F
3213 1K for ITV purpose
A4-16
SDA
3 4 5
1000 UV1336 11 4001
A4-15
UV1300
3041
9007
+VB
7225-A TDA8374C/N3 1 1015 K2955M 3050 1K
5054 1u
4002
I7
GND
NC
4V8 NC
6040 BA482
2041 10n
22K
4 49
4V6
3
3V7
4
3V7
12
7V9
390R
3217
1K5
FOR PAL/MULTI ONLY
I1
2V7 3V3 8V1
+8V
IM31
+8VB
B_TXT_OSD G_TXT_OSD R_TXT_OSD
2044 10n
1 2 3
10
G
V_TUNE_OUT A5-1
BS2
0V
12 13 14 15 6
8
TYPE 5040 3 2 1
s1
2 3
5 48
4V6
3V4
1K BC847B 7214
10u
6
5201
3214
I5 6015
+VB
6
G
BL_TXT_OSD
4 5
8V1
2042 120p 2043
A5-28
3001
3009
3008
4V8
680n 2051
3043
3051
1K 5051
3204
1K
5K6
4K7
10p
BS1
1K 1K 9003 3002
5V
BC857B 7001
4V8 0V
BC857B 7003 4V8 BC857B 4V8 7004
5V 1V5 4V2 4V8
4004
BAS216 6016 BAS216 3016 10K 9008
2050 15p
+VB
9004
4 8 7
3215 1K 3205 680R 22n 2201
1V4 4V
3V4 2V7
7215 BC847B
CVBS_SOUND A6-36
12p 3042
54 53 2202 1u
14
0V
5V
390R
3216
A5-27
2V9
5
3201
2203 100n
3004
3000
3011
3007
1K 2009
100n
8K2
2016 100u
1K 3006 1K
for VST tuner only Bandswitch
For bandpass filter
22K
H
1K 3010
3203
7002 1K 3005 BC857B
FOR 470R PAL/MULTI ONLY 34.4MHZ TRAP
1K
1K
390R 3202 10M
for ITV purpose IM39 1 2
+8V
H
CHROMA_0_NTSC_SW
RF_AGC
CL 86532018_015.AI 010498
M7 D9 1000 F3 1015 G7 1206 D10 1207 D10 1208 E10 1209 F11 1275 C3 1277 C3 1278 D3 1279 D3 2002 F2 2005 F2 2008 F2 2009 H4 2011 G2 2013 F2 2016 H4 2040 F5 2041 G5 2042 G5 2043 H5 2044 G6 2050 G6 2051 H7 2200 B2 2201 H7 2202 H8 2203 H9 2205 C7 2206 B2 2207 B5 2209 B4 2211 C3 2212 C3 2213 B2 2214 B2 2215 F9 2216 E11 2217 G10 2221 D5 2222 D5 2224 F9 2226 E5 2228 E5 2248 A7 2249 B7 2251 C7 2252 C7 2254 C7 2260 F8 2261 E7 2272 C4 2273 C4 2275 C3 2277 C3 2278 D3 2279 D3 2283 E6 2284 E6 2285 E6 3000 H3 3001 G2 3002 H2 3004 H2 3005 H2 3006 H2 3007 H3 3008 H2 3009 G2 3010 H3 3011 H4 3016 H4 3020 F2 3022 F2 3040 F5 3041 G6 3042 H5 3043 H6 3050 G6 3051 H6 3201 H9 3202 H9 3203 H7 3204 H7 3205 H7 3206 F10 3207 B5 3208 A4 3209 A4 3210 E11 3211 E11 3212 F11 3213 F11 3214 G9 3215 G10 3216 H11 3217 F10 3218 F6 3220 D4 3221 D4
2217
100u
3223 E5 3224 E5 3225 D8 3227 D7 3229 D8 3234 F9 3248 A7 3249 B7 3251 A8 3252 C7 3253 B7 3254 B7 3255 F5 3256 F5 3257 F5 3260 F8 3261 E8 3262 F8 3263 E7 3264 E8 3265 E8 3273 C4 3277 C2 3278 D2 3279 D2 3280 E7 4001 F4 4002 G4 4003 F2 4004 G4 4200 C4 4201 C4 4202 D5 4203 D5 4204 C2 4205 D11 5003 E2 5040 G6 5051 H6 5054 G6 5201 G10 5202 F9 5203 E9 5205 E11 5206 D11 5252 C7 5260 E8 6015 G4 6016 G4 6040 G5 6254 C7 6260 E8 6261 E8 6263 D8 6264 D8 6265 D8 7001 H3 7002 H2 7003 G3 7004 H3 7204 A4 7214 G10 7215 H11 7216 F10 7217 F11 7220 E5 7225-A F8 7225-C C5 7225-E B3 7255 A8 7260 D8 7277 C2 7278 D2 7279 D2 9003 H2 9004 G2 9005 G2 9006 F2 9007 G6 9008 H4 9202 F9 9203 A5 IM31 G11 IM39 H12
2205
47u 6254
A4-35
I1
33K
56p
500mV / div AC 10µs / div I3 I3 I4 1.6V DC 4.0V DC 5.0V DC
I5 0.5 - 30V DC I7
50mV / div AC 500ms / div
1
2
3
4
5
6
V1
7
V2
8
V3
9
V4
10
V11
11
V12
12
V13
V14
V15
500mV / div DC 10µs / div
1V / div DC 10µs / div
500mV / div DC 10µs / div
500mV / div DC 10µs / div
200mV / div AC 10µs / div
200mV / div AC 10µs / div
500mV / div AC 10µs / div
500mV / div AC 10µs / div
500mV / div AC 10µs / div
CL 86532018_005.AI 270398
7
Diagrams and print lay-outs
1 2 3 4 5 6
L7.3A
22
7
8
9
10
11
12
CONTROL
* Ref Des VST Tuning PLL Tuning jumper jumper jumper
BZX79-C33
6610 2611 10u
9616
+5VD +5VD
3623
3618
3617
22K
2601
220n
6600
2613
100p
220K
2615
220n
2610
220n
3612
A4-1
10K
15K
150R
8V9 PMBT2369 7610 3610 0V3 10K
8K2 33603-B 8K2
47u
V_TUNE_OUT
*
2602
3615
3614 *
3613
4.2V 5 3624 100R 5V 1 EEPROM
7 0V 4 3 2
VOLUME A7-2 BG_L A6-3
3630 8K2 1K 10u 2630 3632 10K 4616 3633 8K2 10K 3634 4K7 3636 10K 3637 2K2 73603-F 8K2 83603-G 8K2 93603-H 8K2 10 3603-I 8K2 3640 10K 3641 10K 3642 1K VOL DN 1600 VOL UP 1601 CH DN 1602 CH UP 1603 3655 100R
2697 1n
3603-C4 23601-A 1 8K2 3631 8K2 33601-B 8K2 43601-C 7600/7601 SAA5297/P83C766 1V5 1 1V6 2
P2-0|TPWM P2-1|PWM0 P1-5 P1-4
+5VD
3625 PAL MULTI only 3626 100R 3621 100R 3622 100R 3627 100R 3628 100R IM38 1 2 for ITV purpose
+5V +5VD
53603-D 8K2 63603-E
100R 2603 1u
CHROMA_0_NTSC_SW A4-14
22n
1
4.2V 6
2623
23603-A
BZX79-C5V1
15K
12K
3616
A
+VBATT
*
8K2
4600
5600 2u2
5601 6u8 M25 SERVICE SDM M24
1 SM
6u8
10K
3614 3615 3616
15K 10K 22K
C1
+5V
+5VD
5620
7620 ST24W04B1 8
5V
A
B
C2
B
BG_I_OR_BG_DK A6-4
C3
2621 82p 2622 82p
BLACK_STR_SW A4-5
0V6 52 51 3V1
8K2 53601-D 8K2 63601-E 8K2 73601-F 8K2 4604
SID_STA_LL A6-6 A7-6
C
INT_EXT A6-7 A7-7 STANDBY_AVL A6-8
0V 3 P2-2|PWM1 5V 4
P2-3|PWM2 P2-4|PWM3 P2-5|PWM4 P2-6|PWM5 P2-7|PWM6 P3-0|ADC0 P3-1|ADC1 P3-2|ADC2 P3-3|ADC3 VSSD1 P0-0 P0-1 P0-2
50 4V2 P1-7|SDA 49 4V2
P1-6|SCL P1-3|T1 P1-2|INT0 P1-1|T0 P1-0|INT1 VDDM RESET XTAOUT XTAIN OSCGND VDDT VDDA VSYNC HSYNC VDS R G B RGBREF P3-4|PWM7 COR_ VSSD2 FRAME
5V 5 5V 6 0V 7 0V 8 3V 9 0V 10 0V 11 0V 12
48 5V 47 4V9 46 0V5 45 5V 44 5V 43 0V 42 2V4 41 2V4 40 0V 39 4V8 38 4V7 37 4V9 36 4V 35 0V 34 0V 33 0V 32 0V 31 2V6 30 0V7 29 0V6 28 0V 27 2V5
* * *
SDA A4-15 A6-15 A7-15 A8-15 SCL A4-16 A6-16 A7-16 A8-16 CHROMA_1_BG_L A4-17 CHROMA_2_STATUS A4-18
C
for ITV purpose 1 4617 IR +5VD RECEIVER 2 1670
2671
+5VD
TRINORMA only
3607 3671 8K2 3K3
IM33 1 2 3
TREBLE A7-9
3670 4602 2698 2683
1681 12MHZ
8K2 123603-K 8K2 133603-L 3654
+5VD
4608
POR
3
100R C4
IR_OUT IR_IN
2670
100p 2674
4605 4607 2684 220n 2680 220n
100p
D
BASS_AM_IN A7-10
100u
11 3603-J
220n
4601 0V
4
27p 2682 27p
AV_MUTE A6-11 STANDBY A1-26 BS1 A4-27 BS2 A4-28
0V6 7603 BC848B 7681 BC847B
3674 4K7 4V9 3681 0V 10K 2685 3685
33K
+5VD
D
RESET A1-19
2696 1n
8K2
13 4V4 14 4V4 15 5V 16
C6 C5
3682 3683 10K 100K
3602-F 3657 100R 3660 7 2K2 3602-E 6 2K2 3602-D 5 2K2 3602-C 4 2K2 3602-B 3 2K2 3602-A 9614 2 2K2
+5VD
VFB A3-20
+5VD
3684 10K
4V 0V
3686
+11V_LOT
2n2
E
3651 2K2
5V 17 P0-3 5V 18
P0-4 P0-5 P0-6 P0-7 VSSA CVBS0 CVBS1 BLACK IREF
3690 1K8 2690 100p 2691 3694 1K8 3695 1K8 2693 3696 1K8 100p 100p 2692 100p
9610 6690 1N4148 9611 6691 1N4148 9612 6692 1N4148 9613 6693 1N4148 3697
2694 1K
7682 BC847B
68K
HFB A3-21 A2-21
E
12V
2652 820p 2660 820p 2661
100R 7651 BC847B
820p
5V 19 5V 20 21 22 2V1 23 0V6 24 1V9 25 2V3 26
3661 100R 3662 1K
BL_TXT_OSD A4-22
11V9
2651 100u
BZX79-F
11V2
6650
BZX79-C8V2
6653
7608 5V BC847B 2V4 3608 47K
+5VD
R_TXT_OSD A4-23
3658
1K
F
PROT A2-12
G_TXT_OSD A4-24
0V
470n 3650 3653 2650 3656
680R
3663
7650 BC847B 5V
3V
F
3667
2695
6661 1N4148
100n
+5VD
100n 3698
9615
SERVICE SAM M29 M28 1 1 2663 100p 3664
* 2K2
100n 3666
2639
100n 2666
27K
STAND BY LED
4K7 LTL-307X
6663
2K2
47K
1K
7600 - 52 PIN WITH TELETEXT 7601 - 48 PIN WITHOUT TELETEXT
B_TXT_OSD A4-25
5603
+5V_LOT
for ITV purpose
+11V_LOT
* 820R
8u2
TXT 1K8 1K8 1K8 820R 1K Non-TXT/CC 5K6 5K6 5K6 -----
IM30 1 2 3
VFB
*
* Ref Des 3694 3695 3696 3697 3698
CVBS_TXT A4-13 BS1 BS2 BLACK_STR_SW
10K
G
G
HFB
IM32 1 2
* Ref Des TDA 8844 2K2 2K2 TDA 837X -----
2664 100n
2K2
4603
4 IM37 1
SDA
3 GND 1 for ITV purpose
3665 3664
*
2 3
SCL
H
H
CL 86532018_016.AI 010498
GND H2 M24 A10 M25 A10 M28 G5 M29 G5 1600 E2 1601 E2 1602 E3 1603 E3 1670 D11 1681 D8 2601 A8 2602 A9 2603 B10 2610 A2 2611 A3 2613 A4 2615 A2 2621 B10 2622 C10 2623 A12 2630 B2 2639 G6 2650 G1 2651 F1 2652 E3 2660 E3 2661 E4 2663 G5 2664 G5 2666 G6 2670 D9 2671 D11 2674 D9 2680 E9 2682 D8 2683 D8 2684 D9 2685 E11 2690 E8 2691 E8 2692 F8 2693 F8 2694 G8 2695 G10 2696 D6 2697 E4 2698 D7 3601-A B8 3601-B B8 3601-C B8 3601-D C8 3601-E C8 3601-F C8 3602-A F5 3602-B F5 3602-C F5 3602-D E5 3602-E E5 3602-F E5 3603-A A5 3603-B A5 3603-C B5 3603-D B5 3603-E B5 3603-F B5 3603-G C5 3603-H C5 3603-I C5 3603-J D5 3603-K D5 3603-L D5 3604 G8 3605 G8 3606 G8 3607 C10 3608 F3 3610 A4 3612 A3 3613 A3 3614 A2 3615 A2 3616 A3 3617 A2 3618 A2 3621 B9 3622 B9 3623 A11 3624 A10 3625 B10 3626 B9 3627 C9 3628 C9 3630 B3 3631 B5 3632 B3 3633 B3 3634 B3 3636 C3 3637 C3 3640 D3
3641 D3 3642 D3 3650 G2 3651 E1 3653 G3 3654 D4 3655 D4 3656 G2 3657 E4 3658 F2 3660 E4 3661 E4 3662 F4 3663 F4 3664 G5 3665 H5 3666 G6 3667 G4 3670 D10 3671 C10 3674 D10 3681 D11 3682 E11 3683 E11 3684 E9 3685 E10 3686 E10 3690 E8 3694 F8 3695 F8 3696 F8 3697 G9 3698 G8 4600 A7 4601 D9 4602 D7 4603 G8 4604 C8 4605 D9 4607 D9 4608 D8 4616 B3 4617 D10 5600 A8 5601 A9 5603 G9 5620 A10 6600 A8 6610 A3 6650 F2 6653 F2 6661 G4 6663 G3 6690 E9 6691 F9 6692 F9 6693 F9 7600 B6 7603 D10 7608 F3 7610 A4 7620 A11 7650 F2 7651 E2 7681 E10 7682 E10 9610 E9 9611 E9 9612 F9 9613 F9 9614 F4 9615 G4 9616 A10 IM30 G11 IM32 G2 IM33 C12 IM37 G11 IM38 C9
C1 5.0V DC C2
A
1V / div DC 0.1ms / div C3
A
1V / div DC 0.1ms / div C4
3604
10K 3605
3665
10K 3606
A
1V/ div DC 5ms / div C5 3V tt 12 MHz C6 5V tt 12 MHz
CL 86532018_006.AI 020498
1
2
3
4
5
6
7
8
9
10
11
12
7
Diagrams and print lay-outs
1 2 3 4 5 6 SOUND PROCESSING + SOUND INTERFACE
L7.3A
23
7
8
9
10
11
12
+8V
A
LEFT_OUT RIGHT_OUT
A
2 3 4 5 6
SDA SCL +8V CVBS_SOUND MOD_R_IN2 A6-36 A4-36 A6-40 A7-40 A6-1 A7-1 A6-2 A7-2
IM36 1 2 3169 1K
100R
3168
M11 1
for ITV purpose
7115 BC847B
8V1 2V4
2161 10u
3166
837X Jumper
884X 68R
A5-15 A5-16
CVBSOUT A4-32
A6 3166
BZX79-C8V2
CINCH CONNECTIONS
+8V
1V8 CVBSOUT
3167
2K2
7 8
TO C3
1112
BAS216
1 2 3 3173
+8V
6 7
3189
9 10 11 12 13 4332
BG_L MOD_L_IN2
75R
6112
1115
CVBS_EXT1 A4-31
1N4148 13 14
VIDEO_IN1
B
VIDEO_OUT
6110
68R
6111 3190 22R
AV_IN1
IM35
VIDEO_OUT_1
AV_OUT
B
2113
2169
1114
10u
3n3
3118 470p
2168
2165
+8V A5-3 AV_MUTE A5-11
390K
6V 1V7 1V1
2 3
3175
1K BC847B 7113
3172 330R
LEFT_OUT_1
3131
2170 1113 3n3
LEFT_OUT
14 15 16 17
STANDBY_AVL A5-8
RES
C
220K 3176
680p
1116
10K
470R 3177
3171
10u
150R
1
MOD_L_IN1 A6-70
8K2
11 12
LEFT_IN1
RIGHT_OUT A6-2
3174
4171
RIGHT_OUT_1
3120
RIGHT_OUT
A6-5 A7-5
680R
A5 2104 3119
C
RIGHT_IN1
2166
680p
3116 470p
MOD_R_IN1 MOD_L_IN1
A6-60 A7-60 A6-70 A7-70 LEFT_OUT A6-1
3180
+8V
5 A4 4178 2105 10u
2167
1117
BC847B 7117
150R
4
MOD_R_IN1 A6-60
3117
10K
8K2
8 9 10
680R 3181
2114 10u
+8V
6113
CVBS_EXT2 A4-30
BAS216
6114
3182
RES
3
TO C2
5V9 1V7 1V1
INT_EXT SID_STA_LL
A5-7 A5-6
for ITV purpose 3179 330R IM34
MOD_L_IN2 A6-5
75R
D
3187
4333 2
470R 3184
+8V
3178 390K
3188 22R
1N4148
AV-IN2
AV_IN2
20 21
VIDEO_IN2
M9 1
220K 3183 1K BC847B 7114
D
4 5 6 7 4334
2163
680p
3115 470p
AMP_L AMP_R
A7-47 A7-48 Ref Des 3174 MONO 212010891663 1K 212010891663 1K STEREO 212010891654 470R 212010891654 470R
3 4
2125
1119
10K
2
8K2
18 19
LEFT_IN2
BC847B 7118
1
3186
3114 470p
2124
2164
680p
1120
10K
8K2
15 16 17
CVBS_SOUND A6-36
RIGHT_IN2
E
3181
MOD_R_IN2 A6-40
3185
E
* BG BG/DK I/DK 2117 100p 100p 82p 2128 3n9 2131 82p 2132 56p 3n9 82p 82p 3n9 47p 120p 680 12uH
NTSC/Mono NTSC/BTSC 39p 39p 4n7 47p 100p 1K 22uH 33p 47p 100p 1K 22uH A2
L(L+R)
F
3144 680 680 5101 22uH 15uH
HEADPHONE / SPEAKER
4100 1 YKB21-5099A 0191
F
2128 7225-B TDA8374C/N3 55
3V
3193
2198 330p 1110
6 5 4 2 3
1K
+8V
2116 A10 100u A9
M16 7 6 5 4 3 2
INTERNAL LOUDSPEAKER 16 OHM - 3 W 8 OHM - 5 W INTERNAL LOUDSPEAKER
2117
3107
* A3
LA7-51 A7-52
120R
* 9100 6101
3105 22K
1104 1 3 2131
A1 1
0V4
G
3141 15
4V4
L+ MONO_OUT A7-44 A8-44
G
2132
*
3144
560R
100p
1N4148 9101 6100
7101 SFSH 2 BC847B 1102 1 3
2141
* 56
2108
3V7
R+ A7-53
7
2199
*
5101
3V9
10u
*
4130 A8 2130 RES
L_EXT1 A7-49
SFSH 2
3106
1N4148
3108 2K2
4K7 9102
120R 2115 4107
3142
1K
A7 100u
330p
1111
2
R-
A7-54
8 9
3192
1
H
H
BG_I_OR_BG_DK A5-4
CL 86532018_017.AI 010498
M9 D1 M11 A1 M16 G11 0191 G10 1102 G3 1104 G3 1110 G9 1111 H9 1112 B7 1113 C7 1114 C7 1115 B10 1116 C10 1117 C10 1119 E10 1120 E10 2104 C5 2105 D5 2108 H4 2113 C4 2114 D4 2115 H8 2116 G8 2117 G1 2124 E9 2125 E9 2128 G5 2130 H5 2131 G3 2132 G4 2141 G6 2161 A4 2163 E9 2164 E9 2165 C9 2166 C9 2167 C9 2168 C9 2169 C6 2170 C6 2198 G9 219