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1
Colour Television
Chassis
L7.2E
AA
CL 86532008_004.ai 160298
Service Manual
Table of contents
1 2 3 4 5 Technical specifications Location of panels Connection facilities Safety instructions, Warnings and Notes Mechanical instructions Repair facilities Software adjustments and Hotel mode Fault finding tree Block diagram, Survey of testpoints Diagram supply voltages survey Electrical Diagrams and print lay-outs
Page
2 3 4 6 7
6
13 14 15 15
7
Power supply diagram A1 Sync, Horizontal + Vertical output diagram A2 Tuner, IF,Video,Chroma diagram A3 Control diagram A4 Sound processing, Sound interfacediagram A5 CRT panel diagram B Sound Multi-mono panel diagram C Sound Nicam-2CS panel diagram D 8 Electrical adjustments 9 Circuit diagram description (new circuits) 10 Directions for use 11 List of abbreviations 12 Spareparts list
5 Subject in The Netherlands of Philips. without theby FMpermision Service Department Copyright prior 9863 Printed to modification TV 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 21567 4822 otherwise
Diagram 16 18 20 21 22 23 24 26 27 29 32 36 37
PWB 17,19 17,19 17,19 17,19 17,19 23 25 25
©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 FM 9863 TV Service Department
Printed in The Netherlands
Subject to modification
5 4822 727 21567
2
Mains Voltage:
1 Technical specifications
L7.2E
1
: : : : : : : : :
Technical specifications
220 - 240 V AC (+/- 10%) 17" 50 W (stand by < 7 W) 21" 57 W (stand by < 7 W) +/- 300 Hz +/- 600 Hz 45 - 64.5 Hz
Power consumption
Pull in range colour sync Pull in range horizontal sync Pull in range vertical sync
Location of panels
C MULTIMONO OR D
NICAM, MAIN CRT AUDIO PANEL POWER SUPPLY SYNCHRONISATION HOR.DEFLECTION VERT. DEFLECTION TUNER IF VIDEO PROCESSING CONTROL AUDIO SOURCE INPUT AUDIO PROCESSING
B
A1 A2
A3 A4 A5
CL 86532008_005.ai 260398
2
2
Connection facilities
Connection facilities
L7.2E
3
IR Red
Video L R (Ext2) Audio
Volume
- + - +
Channel
EXT1
CL86532008_008.ai 170298
2.1
Cinch
- Video - Audio - Audio 1Vpp/75 L(0.5Vrms 10k) R(0.5Vrms 10k) q q q
4.5-7V:EXT 16:9 9.5-12V:EXT 4:3 91011121314Green Green (0.7Vpp/75) v v (0.7Vpp/75) (0-0.4V:INT 1-3V:EXT/75) 1718192021CVBS CVBS CVBS CVBS Earth socket v v k j j v
2.2
Head phone
(32-600 10mW) ot
2.3
Euroconnector
Red RGBstatus 15- Red 16- RGBstatus
12345678-
Audio Audio Audio Audio Blue Audio Blue CVBSstatus
R (0.5Vrms 1k) R (0.5Vrms 10k) L (0.5Vrms 1k) L (0.5Vrms 10k) (0.7Vpp/75) 0-1.3V:INT
k j k v v j
(1Vpp/75) (1Vpp/75)
4
3.1
3
L7.2E
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.
L7.2E
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
L7.2E
4
Mechanical instructions
For the service position of the main carrier see Fig. 4.1. The main carrier can be removed by releasing the 2 carrier blocking lips (1) and pulling the carrier panel backwards.
1 1
A
B
Figure 4-1
CL 86532008_007.ai 160299
5
5.1
5
Repair facilities
Repair facilities
L7.2E
For Multi-Europe setsPAL-BG For Multi-France setsSECAM-L
7
Test points
The PWB boards have service printing on both sides. In the service printing test points are included. These test points are referring to the electrical function as mentioned below: Test pointElectrical function · · · · · · · A1,A2, etc.: C1,C2, etc.: F1,F2, etc.: L1,L2, etc.: P1, P2,etc.: S1,S2- etc.: V1,V2, etc.: Audio Control Frame drive and frame output Line drive and line output Power supply Synchronisation Video
Tuning: For sets with VST tuner: Programme number 1 is selected .
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 set was in hotel mode, this mode is disabled as long as the TV is in SDM or SAM mode. Brightness, saturation, sharpness, contrast and balance are initialised on 50% level. The volume is set to 25% level. The TV set is normally controllable. All displayed text in SDM and SAM menu are in English.
The numbering is done in a for diagnostics logical sequence. Example: Checking the power supply, start with test point P1, P2 etc.).
5.4 5.2 Service mode
5.4.1
The service mode is split into two parts:
SDM (Service Default Mode)
SDM menu
Below in Fig.6.1 an example of the SDM menu is shown.
Service Default Mode (SDM). Service Alignment Mode (SAM).
Between clamps a short explanation of each item is added.
5.2.1
Entering and leaving SDM and SAM
1. Entering SDM · To entry the SDM , there are two possibilities: Via the "DEFAULT" button on the DST (Dealer Service Tool) Via short circuiting the service pins 0025 and 0024 (mass), while switching on the set via the mains switch. For 0025 and 0024 see Diagram A4 and the PWB drawing of the main panel. · In the SDM mode a S (in green) and the SDM menu (in red) is displayed.(see Fig.6.1). ERR (error) 0 0 0 0 0 001E (life timer) 2.17.6 (software indication) S (service mode indication)
AS (option abbreviation)
ON (option status)
2. Entering SAM · To entry the SAM , there are two possibilities. Via the "ALIGN" button on the DST (Dealer Service Tool) Via short circuiting the Service pins M28 and M29 (mass), while switching on the set via the mains switch. For M28 and M29 see Diagram A4 and the PWB drawing of the main panel. · In the SAM mode a S (in green) and the SAM main menu (in red) is displayed.(see Fig.6.2).
(error buffer)
OPT (option)
36C8 B805 2401 (12 digit option code)
Remark: After the set is in the SDM or SAM mode the short circuit can be removed.
Fig.6.1
5.2.2
Leaving SDM or SAM
To leave the SDM or SAM mode , push the stand-by button on the remote control Remark: After switching off and on by the mains switch , the set remains in the SDM or SAM mode. Below a more detailed information of each item is given
5.4.2
Life timer
The indication is in hexadecimal notation. Each hour the set is switched on (not standby) the number is incremented by 1. Also each time the set is switched on the number is incremented by 1.
5.3
Initial states
The initial state after switching on in the SDM or SAM mode is: System:
8
5.4.3
L7.2E
Software indication number.
5
Repair facilities
5.4.7 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 and statuses by the microcomputer. The options stored in the factory can differ per type and stroke number. Therefore it is necessary to load the EEPROM with the correct statuses These options with statuses are indicated on a sticker glued on the CRT. For an example of the sticker see table 6.1 (this table is valid for 21PT1663/00). Table 6.1
For each software change this number will be changed.
5.4.4
Service mode indication.
The S indicates that the set is in SDM or SAM mode.
5.4.5
ERROR and ERROR buffer
(ERR refers to the "ERROR BUFFER") 00000 represent the contents of the so called "ERROR BUFFER". This buffer consist of 5 digits. In each digit an ERROR code can be displayed. The last five errors, are stored in the EEPROM, and are shown in this buffer. An error will be added to the buffer if this error differs from the last error in the buffer. The last detected error is displayed on the most left digit. Example: Suppose the display shows: 3 4 1 3 1. This means the last found error is error code 3; the last found error but one is error code 4, etc.
Option abbreviation Remark: The ERROR BUFFER is erased when the set is switched from SDM or SAM in stand by , or via code 99 via DST.(Dealer service Tool). AT AV BA The following error codes have been defined: BL CO Error code Error description Possible defective omponent GM HO 0 1 No error MT Internal RAM error of æC General I2C error EEPROM Configuration error (Checksum error) I2C error audio processor I2C error TV processor EEPROM error I2C error PLL tuner POR bit high (43IC7600) Set not correct configured IC7600 PG PR SA SB SP SS SU SY TR UH VI XT
Status ON ON ON ON OFF ON ON PH ON 99 ON IN ON ON ON EW ON OFF OFF ON
2 3
4
MSP3410 on NICAM panel TDA8373/74
5
6 7 8
ST24C04 PLL tuner
5.4.6
ERROR code indication via blinking stand by LED
The ERROR codes 2, 5 and 8 are also indicated via blinking of the stand by LED. This is important if no OSD function or picture is available. The method is to show LED blinks as many as the error code. Example: Error code 5 will result in five blinks ( 0.25 seconds ON and 0.25 seconds OFF). After this sequence the LED will be OFF for 3 seconds.
(Table only valid for 21PT1663/00) Loading a fresh EEPROM Switch on the TV via the power switch. Audio mute the TV (to get no big noise). Change the option statuses as indicated on the sticker on theCRT. Put TV in stand by via the remote control. Switch on the TV again via the remote control.
5
Repair facilities
Switch OFF the TV via the power switch Switch on the TV again via the power switch.
L7.2E
5.4.8 OPTION code
9
In table 2 all the possible option abbreviation with full option name and possible statuses for "Europe" sets are listed. The status can be "ON", "OFF" or can have another indication.
OPT is the abbreviation of OPTION, this abbreviation refers to the following 12 digit hexadecimal option codes (36C8 B805 2401) The option code can not be selected. It only give a quick indication in hexadecimal form of the options settings of the relevant set.
Table 2 : Options
5.5
Option abbr AT AV BA BL CO GM HO MT Option full name Auto tuning system AVL Bass Balance Clock In Menu Game mode Hotel mode Menu type Status possibilities ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF PH = Philips NB = National brand MV = Magnavox PG PR Program guide Presets ON/OFF 99 59 79 SA SB Spatial Sound Board ON/OFF IN = ITT NICAM IT = ITT 2CS MA = MONO ALL MM = Multi Mono SP SS SU SY Smart picture Smart Sound Full Surf System Cluster ON/OFF AKB
SAM (Service Alignment Mode)
Via the SAM, service software alignments can be executed. When entering SAM a main menu is displayed Via the main menu sub menus can be selected.
5.5.1
SAM main menu (see Fig. 6.2)
In the main menu the items of the basic software alignments are indicated. The items can be selected with the UP(+)/DOWN(-) arrow keys on the remote control. Entry into the sub menus is executed with the VOL.(+)/VOL.(-) arrow keys. SAM MAIN MENU
S
ON ON ON ON OFF > > >
TUN.FOA TUN.FOB EXT.FOA EXT.FOB TUNER WHITE TONE GEOMETRY Fig.6.2
ON/OFF Below each item is explained. ON/OFF EW = Europe West EE = Europe East EM = Europe Manual SS = Single System
5.5.2
AKB (Auto Kine Biasing)
With the option AKB the "black current loop" can be enabled or disabled ON =enabled, OFF = disabled.
5.5.3
TUNER Speed setting.
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. Table 3: Options for Tuner Speed settings
TR UH VI XT
Treble UHF only Virgin Mode EXT 2 Available
ON/OFF ON/OFF ON/OFF ON/OFF
10
L7.2E
5
Repair facilities
5.5.6 White tone
Below an example of the white tone sub menu and the derived "WARM", "COOL" and "NORMAL" sub menus are given. With these menus the WARM, COOL and NORMAL colour temperatures can be changed. Speed Normal Slow Fast MAIN WHITE TONE MENU
TUN.FOA OFF OFF ON
TUN.FOB OFF ON X
5.5.4
EXTERNAL A/V Speed setting
With the items EXT.FAO and EXT.FOB the speed ( time constant) for external signals is set. The speed can be set normal, slow and fast. Table 4: Options for External AV Speed settings
S
WARM COOL EXT.FOA OFF OFF ON EXT.FOB OFF ON X Speed Normal NORMAL
< < <
WARM TEMPERATURE SUB MENU Slow Fast WARM S
5.5.5
Tuner
Below an example of the sub menu Tuner is shown.
RED GREEN
39 39 25 COOL TEMPERATURE SUB MENU
Tuner
S
BLUE
AGC F-PLL IF PLL L' AFW AFA AFB Item AGC:
23 3 COOL 0 240 KHz RED 0 GREEN 1 BLUE 25 NORMAL TEMPERATURE SUB MENU For the setting of the item AGC see RF AGC adjustment paragraph 8.1.4 of chapter 8. NORMAL Item IF-PLL, IF-PLL L ACCENT, AFW, AFA and AFB, RED When the main signal processor IC TDA8373/74 is changed, the IF-PLL and IF-PLL L ACCENT need to be realigned For the settings of IF-PLL, IF-PLL L ACCENT and AFW see the picture demodulator adjustments paragraph 8.1.5 of chapter 8. GREEN BLUE Remark: Only one of the 3 items (RED, GREEN or BLUE) will be displayed on the screen. Via "scrolling with the UP/DOWN keys the items can be changed. The item's red, green or blue can be changed by first pressing the control left/right keys to highlight the desired setting. With the desired setting high lighted, the user can increment or decrement the setting by using the control up/down key. All 39 39 25 S 39 39 S
Remark: AFA and AFB are adjusting indicators and therefore not selectable.
5
Repair facilities
changed data are stored into the EEPROM after returning to the SAM main menu via the OK key. The initial default value for all setting is 37. The factory settings of the colour temperatures are: WARM; R = 45, G = 32, B = 26 NORMAL; R = 37, G = X, B = Y COOL; R = 37, G = 32, B = 31 Remark: In NORMAL position the values X (G) and Y (B) are adjusted for 8500K colour temperature.
L7.2E
11
All software is suspended till the DST mode is left. The dealer mode status is left if the stand-by command is received
5.7
Hotel-mode
Entering the hotel-mode : Select channel 38 Push the menu button on the local keyboard (vol. + & vol. - ) and the OSD-button of the RC simultaneously for 3 seconds. The screen shows the "HOTEL MODE SUB MENU "ON". Via this menu the wanted blanked channels can be selected.
5.5.7
GEOMETRY
The geometry menu contains the following information:
Leaving the hotel mode : Same as entering the hotel mode. The screen shows the "HOTEL MODE SUB MENU "OFF".
S
Remarks: In the HOTEL mode the 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.
HSH VSL VAM SC VSH
25 32 23 13 27 Upon enter into the picture geometry menu, the first item will be highlighted. The value can be incremented or decremented by pressing the control right or left key. EXIT The rest of the parameters can be scrolled through by using the control up/down keys. All changed data will be stored into the EEPROM after returning to the service main menu via the OK key. Abbreviation explanation HSH - Horizontal shift VSL - Vertical linearity VAM - Vertical amplitude SC - S-correction VSH - Vertical shift
HOTEL MODE SUB MENU "ON"
38
HOTEL ON
> 38
HOTEL CHANNEL
HOTEL MODE SUB MENU " OFF "
5.6
Use of Dealer Service Tool (DST)
With the SDM, under mentioned extra service features can be executed Direct entering SDM via the "DEFAULT" button on the DST. Direct entering SAM via the "ALIGN" button on the DST. In case of no (OSD) picture the error buffer can be read out using the "BLINKING LED" procedure (see also paragraph 6.7) by pressing the "DIAGNOSE" button on the DST. 38 HOTEL OFF
Remark: The Hotel mode can only be activated if the Hotel mode option status (HO=ON), see table 2.
Remark: Entry of the SDM and SAM via the DST is possible in all states, except from stand-by.
12
L7.2E
5
Repair facilities
6
L7.2E 13
SWITCH - ON THE TV. SET
Fault finding, Block diagram
6
Fault finding, Block diagram
No picture No Sound Reaction on RC Yes Peak voltage at pin 6 IC7520 [A1] >2v5? Over voltage protection No No
No picture No Sound No picture Sound OK Reaction on RC
Yes
LED Continuously ON ?
Set in "Stand-by" or "Protection mode". No Voltage at pin 14 IC7520 [A1] <2v5?
Check: "Take-over circuit" D6540, L5540 [A1]
Voltage +13V, -13V (Lot) is OK ?
No
Check: Stand-by circuit +13V (LOT), IC7541 +8V, VFL, Flyback No No Check: "Feedback loop" D6537, R3541 [A1] Check: "Primary circuit sensing
LED Blinking? (not error codes) Yes
Check: - R3451 [A2] - R3449 [A2] Yes
LED reaction on RC
Yes Check: Heater voltage [A2]
No
Check: Horz. cicuit
Check: +8V supply FM / CVBS
Yes Check: D6445 [A2] TS7445 [A2] FET7518 [A1]
Set in Hick-up mode?
Check: TS7445 on Shortcircuit [A2] D6445 [A2] FET7518 [A1] No Voltag on C2508 [A1] present? No
Vertical defl. problem Check: IC7401 [A2]
Yes Check: +5V (supply control) FUSE Item 1560 [A1] Check: TS7518 [A1] R3500 [A1] FUSE Item 1500 [A1]
Voltage at pin 1 IC7520? [A1]
No
B/W
Snow
white
Yes
Check: R3510 [A1] D6510 [A1]
Pulses at pin3 IC7520? [A1]
Yes
Check: Vertical Defl.circuit IC 7401 [A2]
Check: C 2205 [A3] R 3234 [A3] R 3254 [A3] D 6560 [A1] IC 7541 [A1] Check: Tuner Voltage Pin 6 [A3] +9V
Check: +160V R3470 [A2]
No
Check: Horzontal Defl.circuit D 6441 [A2] D 6445 [A2] TS 7445 [A2]
86532008_001.AI 120298
Replace IC7520 [A1]
Check: R3525 [A1] R3517 [A1] FET7518 [A1]
[A1]
Diagram Reference
6
L7.2E
A5 SOUND-PROCESSING
MULTI
M 11 0033
Fault finding, Block diagram
14
MONO
A4 CONTROL
VIDEO-INTERFACE SOUND-INTERFACE
SCART 21 20 19
CVBS EXT1 (A3-18) (A3-29) CVBS - OUT (A4 - 38) RIGHT_OUT (A4 - 37) LEFT_OUT 1 1
C1
C
DIFFERENT AUDIO -SYSTEM PANELS
1 A5
1
42
52
+5 VD
2
2
41
51
(A3 - 33) V-TUNE
C2
C3
MULTI MONO
0033 0130 0022
C
A5
0030
(A5 - 51) VOLUME
3 18 17 16 15
BL TXT1 OSD (A3-27) (A3-26) R TXT OSD (A4 - 40) (A4 - 39) 4 5
3
1501 7501-2B 7501-2A 7505,7507
M 11
40 A5
M9 8
50
SDA
(A3 - 12) (A3 - 21) (A3 - 34) 2 3 2 3
(A5 - 43) MONO / STOBE / BG-L
4 14 13 12 11
(A3-25) G TXT OSD SCL SDA +8V 6
4
4 5 6
39 +8V
7511,7514
M 11 0033
49
AM DET.
SCL
(A5 - 36) BG / L - or -BG / DK (A3 - 34) CVBS_SOUND MOD_R_IN2 7 8 9 10 11 9 MOD_L_IN2 (A4-80) CHROM2-STATUS 11 10 7 8
5
5
38
48
7620
(A3 - 13)
0025
SERVICE
(A3 - 22)
(A5 - 23) BLACK - STR - SW
6 A5
6
37
47
EEPROM
0024
SDM
(A3 - 40)
MODE
(A5 - 52) SID / STA / LL
7 10 9 8 7
12 M9 13 14 15 16 17 18 19 18 19 16 17 13 14 15 (A3-24) B TXT OSD
7
36
46
CHROMA-2 / STATUS (A3 - 80)
~ ~ ~
NICAM
A5
0022
(A5 - 48) INT / EXT
8
8
35
45
RC5
D
A5
0130 0030
(A5 - 45) AV 1 - AV 2/ AVL
9 6 5 4 3
(A5-37) LEFT OUT MOD_L_IN1
9
34
44
+5 VD
REMOTE RECEIVER
1670
(A5 - 49) TREBLE
10
10
33
43
C6
RESET (A1 - 2)
(A5 - 50) BASS
11 2 1
(A5-38) MOD_L_IN1 NC RIGHT OUT MOD_R_IN1 MOD_R_IN1 SIF/FM
11
32
42
7603
12
12
13
13
7601 (NONTXT) 48K
31
41
X - TAL 12M HZ
(A3 - 31) IF (A4 - 43) MONO/STROB/BG-L L - EXT 1 (A4 - 45) AV1/AV2/AVL
30
40
29
39
7681
L OCAL
A5
STANDBY (A4 - 54)
28
M9 0022
38
7508,7510
1 6 2 3 3
KEYBOARD
55
A3 1
FM
14 15 16 7402 TDA7056B (3WATT)
27
37
(A3 - 43) BS 1
17 7225_6F 7225 - 5E
(A3 - 35) CVBS - SOUND
17 1101 1
8
AUDIO DET
VFL (A2 - 9)
26
36
FLYBACK (A2 - 10)
(A3 - 43) BS 2
18 3141 15
4 5 6 7 8 9 8 9 7 6 5 5 4 2 3
18
+13V/+9V
25 AUDIO OUTPUT AMPLIFIER
35
BL _ TXT _ OSD (A3 - 27)
0130
0030
(A1 - 3)
STANDBY
19
19
24
34
R _ TXT _ OSD (A3 - 26)
BASS TRBLE PROC.
+R -R
1 2 EARTH +L -L 3 4 5
1 2 3 4 5 6
HEAD PHONE CONN 0088
(A4 - 54) (A4 - 36) BG/L - D - BG/DK
LED
20
20
23
33
G _ TXT _ OSD (A3 - 25)
+10V/14V (A4- 48) INT/EXT (A4- 49) TREBLE
21 2 5128
(A4- 52) SID/STA/LL'
21
22
32
B_ TXT _ OSD (A3 - 24)
4 3 2 1
SERVICE
0028
22
16 /3W
31
SAM
0029
23 2130
~ ~ ~
(A4- 50) BASS MONO_OUT (A4- 51) VOLUME
MODE
24 25
(A3 - 28) CVBS TXT
(A5- 35) (A5 - 18)
26
7600 (TXT) SAA5297 64K
30 NC 29 28
16 /3W
27
I F (A5 - 31)
A3
7225 - 5B TDA8373/74
V3 (Y)
T UNER / IF VIDEO / CHROMA
B
CRT MODULE
+9V +5.5V Y
28 V 11 V 13 V4 27
DOS Blank R G B
CVBS -SOUND (A5 - 34)
CVBS -OUT (A5 - 32)
CVBS -EXT1
CVBS - EXT2 (A5- 17)
9011
13 17 V 14
4003 7255 TDA4665 7225 - 5C TDA8373/74
-(R-Y)
V15a
V16a
+8Vb
5260
(B - Y) _ OUT 11
PAL/NTSC
7215
11 32 21 20 19 22
64uS
G
077 1 0177 1
CRT
7302/7307/7306
2 2 G
3010
CVBS -INT
!
29 30 33
-(B-Y)
I2 V5
64uS
I1 10
DECODER
UV 1300
(R - Y) _ OUT 12 31
6
1015 +8Vb
SY
7225 - 5A TDA 8373/74
G- Y MATRIX
3 4
3216
RGB
V16b
G 3 3 R R
11
10
1275
48 49
VIDEO
6
7200 1206
6MHz
38 V6 V 12 4.43MHz ADD FOR SECAM 7
I2 C
35 34
8
R
5 5 B
DET
+8Vb 7241 TDA8395
REF INDENT -(R-Y)
1
7214 +8Va 1207
5.5MHz or 6MHz
V15b V 15
4 4
B
~ ~ ~
3202 7204
1 10 V2 16
CHROMA -(B-Y)
7301/7304/7305
18 V16c
4 5 I6 24
3
9
2
RF-AGC
54
9 25
38
23 26
ONLY FST
~
BLACK CURRENT
TUNE
I5
I3
3217 1208
6.5MHz
B
7265 V15c
V-
(A4 - 12) SDA (A4 - 13) SCL
ONLY VST 3
SCL
B-TXT _OSD
R -TXT _OSD
G -TXT _OSD
SAND - CASTLE
B AND 15
SWITCH
BLACK - STR - SW
BL - TXT -OSD
BCI
(A4 - 15) BS 1
3208
7303/7308/7309 3341
25kV
V G2
V FOCUS
+160V
(A4 - 22) (A4 - 25) (A4 - 26) (A4 - 27) (A4 - 23) (A4 - 24) (A2 - 11)
FF
3 3
(A5 - 33)
(A5 - 29) CVBS -OUT -1
(A4 - 28) CVBS -TXT
(A2 - 30)
(A4 - 21) SDA
FF
2 2 1 1
0166
!
+95V +14V
M6
A1
7420/7421 6420
DISCHARGE (A2- 1)
MAINS SUPPLY
A2 SYNC - HORZ. & VERTICAL DEFLECTION
FF
(A2 - 8)
FF
VG 2
F OCUS
P1
!
(A5 - 18)
FLYBACK
SK 1 2420
P11
5500
3444
3447
SANDCASTLE
1500
AC
2508
7
10
+8V
7445 BUT11AX
L2
7440 7441
6470 +160V
!
!
!
6502/05
5545
!
L1
5570
1571
6445 3442
! !
0055
5445 1
EHT 25K V
T 1.6 A
4 6570 +10V / 14V (A2 - 6)
BCI
DC 3405
3430
3440
L3
2
3470
220V~
T 4 AL
11
5572
SYNC
3443 3461 2469
42 37
FOCUS
VG2
7518 2571
P10
HORZ.
1
7 +13V 8 2450 2 +95V 2460 3450
BCI
D
P3
12
DEFECTION
STP6N60FI
EHT
HORIZONTAL
2470
!
EHT
(A4 - 14) BS 2
7520 MC44603AP VBAT +95V 5551 +95A
P13 S1
G
7225 - 5D TDA8374
43 SYNC
(A2 - 6) (A2 - 7)
G
3
P4
S
5573
6550
!
40 16kHz 41
2462 9
(A3 - 11)
O SC
B UFFER
14
3518
2551
!
L4
44
3525
10
47 51 52
G
3450
6454 2452
L 11
7
P8
(A2 - 8) SANDCASTLE (A3 -38)
+5,5V
16 +14V
P15
VERTICAL
46 50
HZ
8
6560
2
3528
6540
13
50
+13V 6468 3435 (A2 - 7)
BCI
3 2463
F1 F4
!
4 3480 6481 7480
L 10
+9V
4
TDA8139
3538 7541 2 2563 0V6 STB +8V
P14 RESET
6537 +5V
!
14
15
2561
!
7401 TDA9302H (A1 - 1) DISCHARGE 3415 3417
7 1 2 6 3
M4
2480 5
L7
3540
3541 9 8 3 4
P12
1
6480
P9
!
L 12
DEFECTION
VBAT
2562
(A4 - 2)
F2 STANDBY (A4 - 3)
F3
VERT.
Adjust +95V
2537
2540
+ Op.Amp
4
5
2 1
3451
6443 +13V 2443 6
2
!
VFL
3449 3411 6449
L6
-13V
(A5 - 9)
2453
86532008_002.ai 120198
6
L7.2E
A1 (1 - 7225 - 5E) P1 (7 - 5545) F1 (7- 7401)
Fault finding, Block diagram
15
Main panel (component side)
7620 EEPROM 0025
A1
P1
0024
MAINS SUPPLY
C1
6600
SDM
!
5545 5570 6570 +10V / 14V T 1.6 A 10 1571
C2
0011 1500 AC 11 4 DC
DISCHARGE CIRCUIT
sk1
6502/05 2508 5572 2571 6420 50-7225-5D
(for protection)
0.1V / div AC 0.1ms / div
100V / div DC 5ms / div
0.5V / div DC 5ms / div
!
7
2M9
!
!
P11 AUDIO PANELS +10V / 14V +8V 6M11 CONTROL 3617
C D
1 52 50 49 41
C3
42
Mains 7420.7421
C5
T 4 AL
1500
A2 (55 - 7225 - 5E)
P3 (S - 7518) F2 (1 - 7401)
0028 SAM 0029
7518
STP61160FI
C6
A4
+33V Tuning voltage 6610
26 27
P1
6505
7600 µC
7520 MC44603AP
P4 P10
2508
G
P3
!
D 12
IF & VIDEO
P13
S 5550 +95V 6550 VBAT
7541 2
P3
!
3234 5203 5201
A3
+8V A +8V B
P14
7520
AUDIO PANEL
P15
8 9
7518
5V / div AC 1ms / div
0.5V / div DC 5µs / div 0.5V / div DC 5ms / div
S D G 7520
!
B UFFER
14 3518 2551 5551
7255
3 3525 16 6560 2 13 6537 4 14 15 3540
P9 P13
V9
P4
1 14
P4
(3 - 7520)
F3 (5- 7401)
6570
1 16 14
V10
7241
3
P9
C1 (52 - 7600) 5V DC
LINE OUTPUT STAGE
A2 +95A
2 - 5445 (LOT) 6451 +8V C 3430
V7
V6
1 16
2571
P8
V8
3528 6540
V12
V15
2561
P11
7 10
P6
12 5 11 8
V11
5
1 0077
6550
3540
Control IC
!
+14V +5V
P15 SOUND PROCESSING 3447 +8V
8
V13
V14
6550
V4
3445
L7
2561
V5
7225 29 28 30
V3
P10
2551
7441
L3
2V / div DC 5µs / div 20V / div DC 5ms / div
!
7541
TDA8139
A5 2563 2 +8V
CONTROL +8V P14
6481
V2
6444
B C E
2562
C2 (50 - 7600)
(3 - 7520)
3541 1 VBAT Adjust +95V 2
P4
F4 (3 - 7401)
L4
A3
L2
S1
38 40 41 15 13 6
V1
2480
2452
2448
7445
9 8 6 4
P12
A4 2562
RESET 1 STANDBY 5601 +5V D 33 - 7600 19 - 7600
I1
L1
56 1
A1
L6
2453
6454
B C E
6449
L11
TUNER
2443
L12
6443
LOT
C3 (49 - 7600)
A2 SYNC - HORZ & VERTICAL DEFL
1V / div DC 5ms / div P6 (10 - 7520) L1 (C - 7445)
2V / div DC 5µs / div
10V / div DC 5ms / div
F1
F3
F4
F2
7
5
3
1
!
L8
7401
5445 3470 VBAT +95V F OCUS VG 2 6470 2 2470 +160V E H T (25kV)
1-0166
CRT PANEL 3341 +160Va
B
!
Anode CRT FOCUS GRID
1V / div DC 5ms / div C6 (42 - 7600) P8 (7 - 7520) L2 (3445 / 3442)
+8V
1V / div DC 5µs / div
100V / div DC 20µs / div
+95V +14V
CRT panel (track side)
!
3430
L4
V1 (13 - 7225 - 5B)
VG2 GRID 0003 FOCUS VG2
0004
7
L1
V16c
7225-5D TDA8373/74
R
V16a
37 7440
G
+13V 8 3444 3447
L2
2-0166
B
2460 7445 BUT11AX 40
16kHz
3460 1 7441 3442 9
FF FF
Filement CRT 3-0166
V16b
G
0166
8
0322
3
1V / div DC 20µs / div 1V / div DC 0.5µs / div V5 (30 - 7225 - 5B) P9 (14 - 7520) L3 (E- 7440) 2V / div DC 20µs / div
0.5V / div DC 5µs / div
0177
1
1
HORZ. L3
5
0003
V2 (38 - 7225 - 5B)
3443
10
HOR DRIVE
50
DEFECTION
V15a V15c V15b
CL86532008_009.ai 170298
3 Discharge (from A1) 3450
!
Protection INPUTS
42 BCI
6454
L 11
+5,5V 2452
{
A4
TUNER 4003 9011
A3 3010
+VB
1V / div DC 20µs / div V12 (12 - 7225) V6 (11 - 7225 - 5B) 3.5V DC (PAL)
0.5V / div DC 20µs / div
0.5V / div DC 5µs / div
2V / div DC 20µs / div L4 (40 - 7225 - 5D)
V15a,b,c (4M7)
V16b (Green)
S1 (41 - 7225 - 5D)
V3 (28 - 7225 - 5B)
4
3480
!
L 10
6481 2480 5 7600 (µp)
L7
7480 +9V
!
6480
!
3451 6443 16 2443
L 12
+13V
FRAME OUTPUT
A2
1V / div DC 20µs / div V11 (11 - 7255)
20V / div DC 20µs / div
1V / div DC 20µs / div
1V / div DC 20µs / div
0.5V / div DC 20µs / div V13 (3M7)
2V / div DC 20µs / div V14 (2M7)
Protection INPUTS
+13V 37
6
!
3449 VFL (from 3-7401 vertical output, see diagram A2) 6449 2453 -13V
V16a (Blue)
V16c (Red)
I1 (6 - 7225 - 5A)
V4 (29 - 7225 - 5B)
{
1V / div DC 20µs / div 1V / div DC 20µs / div
2 - 7401
4 - 7401
20V / div DC 20µs / div
20V / div DC 20µs / div
1V / div DC 20µs / div
0.5V / div DC 20µs / div
0.5V / div DC 20µs / div
86532008_003.AI 200298
7
L7.2E
P1 (7 - 5545) P8 (7 - 7520)
Diagrams and print lay-outs
16
7
Diagrams and print lay-outs
100V / div DC 5ms / div P2 (C - 6510)
0.5V / div DC 5µs / div P9 (14 - 7520)
5V / div DC 5ms / div P3 (S - 7518)
0.5V / div DC 5µs / div P10 (C - 6550) 95V DC P10 (C - 6550) 104V DC 0.5V / div DC 5µs / div P4
(3 - 7520)
P11 (C - 6570) 16V DC P11 (C - 6570) 14.4V DC 2V / div DC 5µs / div P4
(3 - 7520)
P12 (6 - 7541) 2.1V DC P12 (6 - 7541) 2V DC 2V / div DC 5µs / div P5 (1 - 7520) 14V DC P13 (2 - 7541) 14.5V DC P13 (2 - 7541) 13.6V DC
P6 (10 - 7520) P14 (8 - 7541) 8V DC P14 (8 - 7541) 0.6V DC 1V / div DC 5µs / div P7 (6 - 7520)
015_008.EPS
P15 (9 - 7541) 5V DC P15 (9 - 7541) 5V DC 0.5V / div DC 5µs / div
7
L7.2E
3 4 5
Diagrams and print lay-outs
17
1
2
A
9615 C2 9616 C3 9620 C1 9628 D3 9637 C1 9643 D2 9644 D3 9647 D2 9649 C2 9650 C3 9651 C4 9658 C1 9660 C2 9663 D2 9667 D2 9677 C2 9690 D2 9691 C3 9692 C3 9693 C3 9900 B5 9901 B5 9902 D5 9903 C5 9904 D5 9905 D5 9906 D5 9907 C5 M0 B3 M11 E4 M9 E3 *=chip component
B
C
D
E
0003 E2 0004 D1 0010 C2 0011 A2 0015 D3 0020 B1 0022 B1 0024 C1 0025 C1 0026 D1 0028 D2 0029 D2 0030 B1 0044 C5 0055 A4 0066 B5 0077 D3 0088 B1 0139 A1 0166 E1 0177 E2 0231 C5 0232 B1 0233 D1 0321 E1 0322 E1 1000 E5 1015 D4 1060 C1 1061 D1 1062 D1 1063 D1 1064 A1 1100 B1 * 1102 D4 1103 B1 * 1104 D4 1105 C1 * 1106 B1 * 1107 B1 * 1108 C5 * 1109 C5 * 1110 D5 * 1111 C5 * 1112 D5 * 1120 B1 * 1121 B1 * 1122 B1 * 1123 B1 * 1206 C3 1207 C4 1208 C4 1209 E4 1275 D4 1277 D4 1500 A2 1560 C3 1571 B3 1670 B1 1681 C2 2008 E5 * 2010 D4 2011 E4 * 2016 D5 2042 E4 * 2043 E4 * 2104 E5 2105 D5 2108 D4 2110 D5 2115 B1 2116 B1 2117 C4 * 2120 D5 2121 D5 2124 C1 * 2125 C1 * 2128 D4 * 2130 D4 * 2144 D4 2145 D5 * 2161 D5 2163 C1 2164 C1 2166 C5 * 2167 D5 2168 C5 * 2169 C5 * 2170 E5 2171 E5 2180 C5 * 2198 B1 2199 B1 2200 D5 * 2201 D4 * 2202 D4 2203 D4 * 2205 E3 2209 D4 * 2211 D4 2212 D4 * 2213 D4 * 2214 C1 * 2215 D4 * 2217 C4 2218 D4 * 2221 E3 * 015_006.EPS 170398
2222 E3 * 2224 D4 2226 D3 2240 D3 * 2241 D3 * 2242 D3 * 2248 E3 * 2249 D3 * 2251 E3 * 2252 E3 * 2254 E3 * 2260 D3 2261 C3 * 2272 D4 * 2273 D3 * 2275 D4 * 2277 D4 * 2283 C3 * 2284 C3 * 2285 C3 * 2313 E2 * 2321 E2 * 2323 E2 * 2333 E1 * 2341 E1 2342 D1 2373 E1 2401 C5 2403 D4 2406 D4 * 2409 D4 * 2410 D4 2414 C5 2420 C3 2421 D4 2422 B2 2430 D4 2434 D4 * 2436 D4 * 2437 D4 * 2440 C3 2442 A4 * 2443 C4 2444 A4 2445 A4 2448 B4 2450 A5 2451 A4 2452 C4 2453 C4 2456 A5 2460 B5 2461 D3 2462 A4 2463 C5 2464 B5 * 2465 B5 * 2466 C5 * 2467 C5 * 2468 C5 * 2469 A4 2470 A5 2471 A4 2476 C5 * 2480 C4 2485 B5 * 2487 C5 * 2500 A1 2502 B2 2504 B2 2505 B2 2508 A2 2509 B3 2510 B3 2517 A3 * 2518 B2 2520 A3 * 2521 A3 * 2522 A3 * 2524 A3 * 2529 A3 * 2530 A3 2531 A3 2532 A3 * 2533 A3 * 2534 A3 * 2537 A3 2540 A3 2541 A3 2545 B3 2550 B4 2551 B4 2553 C2 * 2554 C2 * 2560 B3 * 2561 C3 2562 B4 2563 C2 2570 B3 * 2571 C3 2572 B3 * 2580 C2 * 2582 B4 * 2583 C2 2584 C2 2601 C1 * 2602 C1
2607 D2 * 2608 D2 * 2610 D1 2611 D1 2613 D1 * 2615 E4 2621 C1 * 2622 C1 * 2623 C1 * 2630 D1 2639 D2 * 2644 D2 2650 D1 * 2652 D1 * 2655 C1 2660 D2 * 2661 D2 * 2663 D3 * 2664 D2 * 2666 D2 * 2670 C1 * 2671 A1 2674 C2 * 2680 C2 * 2682 C2 * 2683 C2 * 2684 C2 * 2685 C2 * 2690 C2 * 2691 C2 * 2692 C2 * 2693 C2 * 2694 C2 * 2695 C2 * 3000 E4 * 3001 E4 3002 E4 3004 E4 * 3005 E3 * 3006 E3 * 3007 E3 3008 E3 * 3009 E3 * 3010 E3 3013 E3 3015 E3 3016 D5 3020 E5 * 3022 E5 * 3040 E4 * 3100 B1 3104 C3 3105 C3 * 3106 C3 * 3107 C3 * 3108 C4 * 3114 C1 3115 C1 3121 C5 3122 C5 3123 D5 3124 D5 * 3125 D5 3126 C3 * 3127 D5 3128 D5 3129 C3 * 3130 C3 * 3141 D3 3144 D4 * 3160 D5 3161 C5 3162 D5 3163 D5 3164 D5 3165 D5 * 3166 D5 * 3167 D5 * 3168 D5 * 3169 C4 * 3170 E5 * 3178 E5 * 3179 E5 * 3180 E5 * 3181 E5 * 3185 C1 3186 C1 3187 C1 3188 C1 3191 B1 3192 B1 3193 B1 3194 E5 3195 D5 3201 D4 * 3202 D4 * 3203 D4 3204 D5 * 3205 D4 3206 C4 * 3207 C4 3208 D3 * 3209 D4 * 3210 C4 * 3211 C4 * 3214 C4 * 3215 C4 *
3216 C4 * 3217 C4 * 3218 C4 * 3220 C4 3221 C4 3223 D3 3224 D3 * 3225 D3 * 3227 D4 * 3229 D4 * 3234 D3 3248 E3 * 3249 D3 * 3250 D3 * 3251 D3 3252 E3 * 3253 E3 * 3254 E3 * 3265 C3 * 3266 C3 3267 C4 3273 D4 * 3280 D3 * 3311 E2 3312 E2 * 3313 E2 * 3314 D2 3315 E2 3316 D2 3317 E2 3321 E2 * 3322 E2 * 3323 E2 * 3324 E2 3325 E2 3326 E2 3327 E2 3331 E1 * 3332 E1 * 3333 E1 * 3334 E1 3335 E2 3336 E1 3337 D1 3341 E1 3342 D1 3347 E2 3371 E1 3372 E1 3374 E2 3400 E4 3401 C5 3402 C5 3403 D4 * 3404 C5 3405 E4 * 3406 C5 3407 C5 3408 E4 * 3410 D4 * 3411 C5 3412 B5 * 3413 C5 3415 C5 * 3417 C5 * 3418 B5 3420 C4 * 3421 D4 * 3422 D4 * 3423 D4 * 3430 E4 3431 A5 3432 A5 3433 D4 3434 D4 * 3435 D4 3436 C5 3437 C4 3440 C3 * 3441 C3 * 3442 A4 3443 B4 * 3444 A4 3445 A4 3446 A4 3447 B4 3448 B4 3449 B5 3450 B4 3451 B4 3456 A5 3457 A5 3458 A5 3459 A4 3460 B5 3461 C3 * 3462 B4 3470 B5 3471 A5 3480 C4 3481 C4 3490 D4 * 3491 D4 * 3500 A2 3501 A1 3503 B2 3504 B2 3505 B1 3506 B2 3507 B2 3510 B2 3512 A3 * 3513 A3 * 3517 A3 * 3518 A3 3520 A3 * 3521 A3 3524 A3 * 3525 A3 3528 A3 3529 A3 3530 A3 3532 A3 * 3534 A3 * 3536 A3 * 3537 A3 * 3538 A3 3539 A3 3540 A3 3541 A3 3542 A2 3545 B2 3546 B3 3552 C3 * 3553 C3 * 3554 C3 * 3565 C2 * 3570 B3 * 3580 C2 * 3581 C2 * 3582 C2 * 3585 B4 3586 B4 * 3587 B3 * 3588 B4 * 3589 B3 * 3590 C2 * 3591 C2 * 3593 C2 * 3601 C1 3602 D2 3603 D1 3604 C2 * 3605 C2 * 3606 C2 * 3607 C2 * 3608 D1 3610 D1 * 3612 D1 * 3613 D1 3614 D1 * 3615 E4 3616 D1 * 3617 C3 3618 C3 3621 C1 * 3622 C1 * 3623 C1 * 3624 C1 * 3625 C1 * 3628 E3 * 3629 C1 * 3630 D1 * 3632 D2 * 3633 D2 3634 D2 3636 E3 3637 E2 3640 E2 * 3641 E2 * 3644 D2 3653 D1 * 3654 D2 * 3655 D2 3656 C1 * 3657 D2 3660 D2 * 3661 D2 * 3662 D2 * 3663 C1 * 3664 D3 * 3665 D2 * 3666 D2 * 3667 C1 * 3670 C2 3671 C1 * 3674 C2 3675 C2 3676 C2 * 3681 C2 3684 C2 * 3685 C2 3686 C2 * 3688 C2 * 3689 C2 * 3690 C2 3693 C2 * 3694 C2 * 3695 C2 * 3696 C2 * 3698 C2 * 3699 D2 * 4000 E5 * 4002 E4 * 4003 E3 * 4004 D4 * 4007 D5 * 4008 D4 * 4011 E5 * 4013 E5 * 4014 E5 * 4026 E4 * 4052 D4 * 4100 B1 * 4101 E3 * 4102 B1 * 4107 B1 * 4113 C5 * 4116 C4 * 4121 D5 * 4177 E2 * 4178 E5 * 4180 C5 * 4200 E3 * 4201 E3 * 4202 D4 * 4211 D4 * 4212 D4 * 4213 D4 * 4214 C4 * 4216 C4 * 4217 B1 * 4219 D2 * 4235 C4 * 4236 C5 * 4251 E3 * 4421 C4 * 4555 C2 * 4600 C1 * 4601 C2 * 4603 C2 * 4605 C2 * 4609 C2 * 4613 D2 * 4621 D2 * 4647 C2 * 4677 E1 * 4682 C2 * 4684 C2 * 4694 C2 * 4695 C2 * 4696 C2 * 5010 E4 5128 D4 5201 C3 5202 D4 5203 E3 5206 C3 5260 D4 5370 E1 5441 A5 5442 A4 5443 A5 5445 B4 5451 A4 5456 B4 5457 B4 5458 B4 5500 B2 5515 A3 5516 B3 5540 A3 5545 B3 5550 B3 5551 C4 5553 C3 5570 B3 5571 E3 5572 B3 5573 B3 5600 D1 5601 C1 5602 C2 5603 C2 5605 C2 5620 C1 6001 E3 6002 E3 6003 E4 6016 D5 6100 C4 6101 C4 6109 D5 6110 D5 6111 C3 6254 E3 6265 C4 6311 E2 6321 D2 6331 D2 6332 E1 6341 E2 6347 E2 6420 C3 6440 A4 6441 A4 6443 C5 6444 B4 6445 A4 6449 C4 6454 B4 6455 A5 6456 A5 6461 B4 6464 B4 6468 C5 6470 B5 6480 C4 6481 C4 6502 B2 6503 B2 6504 B2 6505 B2 6507 B3 6508 A3 6510 A2 6524 A3 6537 A3 6540 A3 6550 C3 6560 B3 6570 B3 6581 C2 6583 B4 6585 C2 6586 C2 6600 C1 6610 D1 6653 C1 6661 D2 6663 A1 6690 D2 6691 C3 6692 C3 6693 C3 7001 E3 * 7002 E3 * 7003 E3 * 7100 C3 * 7101 C3 * 7115 D5 * 7118 E5 * 7200 C4 * 7204 D3 * 7214 C4 * 7215 C4 * 7220 D3 * 7225 D4 7241 D3 7255 E3 7265 C3 * 7301 E2 7302 E2 7303 E1 7304 E2 7305 E2 7306 E2 7307 E2 7308 E1 7309 E1 7401 C5 7420 D5 * 7421 C4 * 7440 C3 * 7441 A4 7445 A4 7518 B3 7520 A3 7541 C3 7581 A4 7583 B3 * 7584 B4 * 7585 C2 * 7586 C2 * 7587 C2 * 7600 C2 7601 C2 7603 C2 * 7608 D1 * 7610 D1 * 7620 C1 7644 D3 * 7655 C1 * 7681 C2 * 7682 C2 * 7683 C2 * 7684 C2 * 9001 E4 9003 E5 9006 E4 9007 D4 9008 D2 9009 E3 9010 E3 9011 E3 9013 E4 9016 D5 9018 D5 9019 D4 9020 D3 9021 D3 9023 C3 9024 E4 9025 D4 9040 E4 9100 C4 9101 C4 9102 E3
9103 E4 9104 E4 9107 D4 9108 E5 9109 E4 9110 E3 9111 E2 9112 D5 9113 C4 9115 E4 9116 E3 9118 C3 9122 E4 9123 E4 9124 E4 9125 E4 9126 D4 9131 D5 9132 B1 9133 E3 9134 E3 9135 E3 9137 E5 9138 E5 9139 D2 9141 D3 9145 D5 9147 D5 9148 D5 9202 D4 9203 C4 9206 C3 9207 C3 9208 D3 9209 C3 9210 E4 9211 D3 9212 D3 9220 D3 9221 C3 9225 C3 9229 D2 9233 D1 9235 D3 9236 D3 9237 C3 9238 D3 9240 C4 9245 D3 9246 D3 9247 C3 9248 C3 9250 D3 9251 D3 9252 D1 9261 D3 9270 C3 9313 E1 9317 D1 9334 E2 9337 E1 9341 E2 9347 E2 9370 E1 9372 E1 9377 E1 9403 B4 9404 C5 9405 C3 9406 B5 9408 C5 9410 C4 9411 B5 9413 C5 9416 C4 9417 C2 9418 D3 9419 C4 9423 C4 9424 C4 9425 C4 9426 D3 9443 D5 9448 B4 9450 A4 9454 A5 9461 B4 9462 B4 9469 C5 9500 A2 9501 A1 9505 B2 9515 A3 9518 C3 9519 C3 9520 C2 9590 C3 9601 D3 9602 C1 9603 B1 9604 D3 9605 D2 9606 E4 9607 C2 9611 D2 9613 D1 9614 D2
7
L7.2E
3 2 1
Diagrams and print lay-outs
18
5
4
A
9615 C2 9616 C3 9620 C1 9628 D3 9637 C1 9643 D2 9644 D3 9647 D2 9649 C2 9650 C3 9651 C4 9658 C1 9660 C2 9663 D2 9667 D2 9677 C2 9690 D2 9691 C3 9692 C3 9693 C3 9900 B5 9901 B5 9902 D5 9903 C5 9904 D5 9905 D5 9906 D5 9907 C5 M0 B3 M11 E4 M9 E3 *=chip component
B
C
D
E
0003 E2 0004 D1 0010 C2 0011 A2 0015 D3 0020 B1 0022 B1 0024 C1 0025 C1 0026 D1 0028 D2 0029 D2 0030 B1 0044 C5 0055 A4 0066 B5 0077 D3 0088 B1 0139 A1 0166 E1 0177 E2 0231 C5 0232 B1 0233 D1 0321 E1 0322 E1 1000 E5 1015 D4 1060 C1 1061 D1 1062 D1 1063 D1 1064 A1 1100 B1 * 1102 D4 1103 B1 * 1104 D4 1105 C1 * 1106 B1 * 1107 B1 * 1108 C5 * 1109 C5 * 1110 D5 * 1111 C5 * 1112 D5 * 1120 B1 * 1121 B1 * 1122 B1 * 1123 B1 * 1206 C3 1207 C4 1208 C4 1209 E4 1275 D4 1277 D4 1500 A2 1560 C3 1571 B3 1670 B1 1681 C2 2008 E5 * 2010 D4 2011 E4 * 2016 D5 2042 E4 * 2043 E4 * 2104 E5 2105 D5 2108 D4 2110 D5 2115 B1 2116 B1 2117 C4 * 2120 D5 2121 D5 2124 C1 * 2125 C1 * 2128 D4 * 2130 D4 * 2144 D4 2145 D5 * 2161 D5 2163 C1 2164 C1 2166 C5 * 2167 D5 2168 C5 * 2169 C5 * 2170 E5 2171 E5 2180 C5 * 2198 B1 2199 B1 2200 D5 * 2201 D4 * 2202 D4 2203 D4 * 2205 E3 2209 D4 * 2211 D4 2212 D4 * 2213 D4 * 2214 C1 * 2215 D4 * 2217 C4 2218 D4 * 2221 E3 * 2222 E3 * 2224 D4 2226 D3 2240 D3 * 2241 D3 * 2242 D3 * 2248 E3 * 2249 D3 * 2251 E3 * 2252 E3 * 2254 E3 * 2260 D3 2261 C3 * 2272 D4 * 2273 D3 * 2275 D4 * 2277 D4 * 2283 C3 * 2284 C3 * 2285 C3 * 2313 E2 * 2321 E2 * 2323 E2 * 2333 E1 * 2341 E1 2342 D1 2373 E1 2401 C5 2403 D4 2406 D4 * 2409 D4 * 2410 D4 2414 C5 2420 C3 2421 D4 2422 B2 2430 D4 2434 D4 * 2436 D4 * 2437 D4 * 2440 C3 2442 A4 * 2443 C4 2444 A4 2445 A4 2448 B4 2450 A5 2451 A4 2452 C4 2453 C4 2456 A5 2460 B5 2461 D3 2462 A4 2463 C5 2464 B5 * 2465 B5 * 2466 C5 * 2467 C5 * 2468 C5 * 2469 A4 2470 A5 2471 A4 2476 C5 * 2480 C4 2485 B5 * 2487 C5 * 2500 A1 2502 B2 2504 B2 2505 B2 2508 A2 2509 B3 2510 B3 2517 A3 * 2518 B2 2520 A3 * 2521 A3 * 2522 A3 * 2524 A3 * 2529 A3 * 2530 A3 2531 A3 2532 A3 * 2533 A3 * 2534 A3 * 2537 A3 2540 A3 2541 A3 2545 B3 2550 B4 2551 B4 2553 C2 * 2554 C2 * 2560 B3 * 2561 C3 2562 B4 2563 C2 2570 B3 * 2571 C3 2572 B3 * 2580 C2 * 2582 B4 * 2583 C2 2584 C2 2601 C1 * 2602 C1 3216 C4 * 3217 C4 * 3218 C4 * 3220 C4 3221 C4 3223 D3 3224 D3 * 3225 D3 * 3227 D4 * 3229 D4 * 3234 D3 3248 E3 * 3249 D3 * 3250 D3 * 3251 D3 3252 E3 * 3253 E3 * 3254 E3 * 3265 C3 * 3266 C3 3267 C4 3273 D4 * 3280 D3 * 3311 E2 3312 E2 * 3313 E2 * 3314 D2 3315 E2 3316 D2 3317 E2 3321 E2 * 3322 E2 * 3323 E2 * 3324 E2 3325 E2 3326 E2 3327 E2 3331 E1 * 3332 E1 * 3333 E1 * 3334 E1 3335 E2 3336 E1 3337 D1 3341 E1 3342 D1 3347 E2 3371 E1 3372 E1 3374 E2 3400 E4 3401 C5 3402 C5 3403 D4 * 3404 C5 3405 E4 * 3406 C5 3407 C5 3408 E4 * 3410 D4 * 3411 C5 3412 B5 * 3413 C5 3415 C5 * 3417 C5 * 3418 B5 3420 C4 * 3421 D4 * 3422 D4 * 3423 D4 * 3430 E4 3431 A5 3432 A5 3433 D4 3434 D4 * 3435 D4 3436 C5 3437 C4 3440 C3 * 3441 C3 * 3442 A4 3443 B4 * 3444 A4 3445 A4 3446 A4 3447 B4 3448 B4 3449 B5 3450 B4 3451 B4 3456 A5 3457 A5 3458 A5 3459 A4 3460 B5 3461 C3 * 3462 B4 3470 B5 3471 A5 3480 C4 3481 C4 3490 D4 * 3491 D4 * 3500 A2 3501 A1 3503 B2 3504 B2 015_007.EPS 110398 3505 B1 3506 B2 3507 B2 3510 B2 3512 A3 * 3513 A3 * 3517 A3 * 3518 A3 3520 A3 * 3521 A3 3524 A3 * 3525 A3 3528 A3 3529 A3 3530 A3 3532 A3 * 3534 A3 * 3536 A3 * 3537 A3 * 3538 A3 3539 A3 3540 A3 3541 A3 3542 A2 3545 B2 3546 B3 3552 C3 * 3553 C3 * 3554 C3 * 3565 C2 * 3570 B3 * 3580 C2 * 3581 C2 * 3582 C2 * 3585 B4 3586 B4 * 3587 B3 * 3588 B4 * 3589 B3 * 3590 C2 * 3591 C2 * 3593 C2 * 3601 C1 3602 D2 3603 D1 3604 C2 * 3605 C2 * 3606 C2 * 3607 C2 * 3608 D1 3610 D1 * 3612 D1 * 3613 D1 3614 D1 * 3615 E4 3616 D1 * 3617 C3 3618 C3 3621 C1 * 3622 C1 * 3623 C1 * 3624 C1 * 3625 C1 * 3628 E3 * 3629 C1 * 3630 D1 * 3632 D2 * 3633 D2 3634 D2 3636 E3 3637 E2 3640 E2 * 3641 E2 * 3644 D2 3653 D1 * 3654 D2 * 3655 D2 3656 C1 * 3657 D2 3660 D2 * 3661 D2 * 3662 D2 * 3663 C1 * 3664 D3 * 3665 D2 * 3666 D2 * 3667 C1 * 3670 C2 3671 C1 * 3674 C2 3675 C2 3676 C2 * 3681 C2 3684 C2 * 3685 C2 3686 C2 * 3688 C2 * 3689 C2 * 3690 C2 3693 C2 * 3694 C2 * 3695 C2 * 3696 C2 * 3698 C2 * 3699 D2 * 4000 E5 * 4002 E4 * 2607 D2 * 2608 D2 * 2610 D1 2611 D1 2613 D1 * 2615 E4 2621 C1 * 2622 C1 * 2623 C1 * 2630 D1 2639 D2 * 2644 D2 2650 D1 * 2652 D1 * 2655 C1 2660 D2 * 2661 D2 * 2663 D3 * 2664 D2 * 2666 D2 * 2670 C1 * 2671 A1 2674 C2 * 2680 C2 * 2682 C2 * 2683 C2 * 2684 C2 * 2685 C2 * 2690 C2 * 2691 C2 * 2692 C2 * 2693 C2 * 2694 C2 * 2695 C2 * 3000 E4 * 3001 E4 3002 E4 3004 E4 * 3005 E3 * 3006 E3 * 3007 E3 3008 E3 * 3009 E3 * 3010 E3 3013 E3 3015 E3 3016 D5 3020 E5 * 3022 E5 * 3040 E4 * 3100 B1 3104 C3 3105 C3 * 3106 C3 * 3107 C3 * 3108 C4 * 3114 C1 3115 C1 3121 C5 3122 C5 3123 D5 3124 D5 * 3125 D5 3126 C3 * 3127 D5 3128 D5 3129 C3 * 3130 C3 * 3141 D3 3144 D4 * 3160 D5 3161 C5 3162 D5 3163 D5 3164 D5 3165 D5 * 3166 D5 * 3167 D5 * 3168 D5 * 3169 C4 * 3170 E5 * 3178 E5 * 3179 E5 * 3180 E5 * 3181 E5 * 3185 C1 3186 C1 3187 C1 3188 C1 3191 B1 3192 B1 3193 B1 3194 E5 3195 D5 3201 D4 * 3202 D4 * 3203 D4 3204 D5 * 3205 D4 3206 C4 * 3207 C4 3208 D3 * 3209 D4 * 3210 C4 * 3211 C4 * 3214 C4 * 3215 C4 * 4003 E3 * 4004 D4 * 4007 D5 * 4008 D4 * 4011 E5 * 4013 E5 * 4014 E5 * 4026 E4 * 4052 D4 * 4100 B1 * 4101 E3 * 4102 B1 * 4107 B1 * 4113 C5 * 4116 C4 * 4121 D5 * 4177 E2 * 4178 E5 * 4180 C5 * 4200 E3 * 4201 E3 * 4202 D4 * 4211 D4 * 4212 D4 * 4213 D4 * 4214 C4 * 4216 C4 * 4217 B1 * 4219 D2 * 4235 C4 * 4236 C5 * 4251 E3 * 4421 C4 * 4555 C2 * 4600 C1 * 4601 C2 * 4603 C2 * 4605 C2 * 4609 C2 * 4613 D2 * 4621 D2 * 4647 C2 * 4677 E1 * 4682 C2 * 4684 C2 * 4694 C2 * 4695 C2 * 4696 C2 * 5010 E4 5128 D4 5201 C3 5202 D4 5203 E3 5206 C3 5260 D4 5370 E1 5441 A5 5442 A4 5443 A5 5445 B4 5451 A4 5456 B4 5457 B4 5458 B4 5500 B2 5515 A3 5516 B3 5540 A3 5545 B3 5550 B3 5551 C4 5553 C3 5570 B3 5571 E3 5572 B3 5573 B3 5600 D1 5601 C1 5602 C2 5603 C2 5605 C2 5620 C1 6001 E3 6002 E3 6003 E4 6016 D5 6100 C4 6101 C4 6109 D5 6110 D5 6111 C3 6254 E3 6265 C4 6311 E2 6321 D2 6331 D2 6332 E1 6341 E2 6347 E2 6420 C3 6440 A4 6441 A4 6443 C5 6444 B4 6445 A4 6449 C4 6454 B4 6455 A5 6456 A5 6461 B4 6464 B4 6468 C5 6470 B5 6480 C4 6481 C4 6502 B2 6503 B2 6504 B2 6505 B2 6507 B3 6508 A3 6510 A2 6524 A3 6537 A3 6540 A3 6550 C3 6560 B3 6570 B3 6581 C2 6583 B4 6585 C2 6586 C2 6600 C1 6610 D1 6653 C1 6661 D2 6663 A1 6690 D2 6691 C3 6692 C3 6693 C3 7001 E3 * 7002 E3 * 7003 E3 * 7100 C3 * 7101 C3 * 7115 D5 * 7118 E5 * 7200 C4 * 7204 D3 * 7214 C4 * 7215 C4 * 7220 D3 * 7225 D4 7241 D3 7255 E3 7265 C3 * 7301 E2 7302 E2 7303 E1 7304 E2 7305 E2 7306 E2 7307 E2 7308 E1 7309 E1 7401 C5 7420 D5 * 7421 C4 * 7440 C3 * 7441 A4 7445 A4 7518 B3 7520 A3 7541 C3 7581 A4 7583 B3 * 7584 B4 * 7585 C2 * 7586 C2 * 7587 C2 * 7600 C2 7601 C2 7603 C2 * 7608 D1 * 7610 D1 * 7620 C1 7644 D3 * 7655 C1 * 7681 C2 * 7682 C2 * 7683 C2 * 7684 C2 * 9001 E4 9003 E5 9006 E4 9007 D4 9008 D2 9009 E3 9010 E3 9011 E3 9013 E4 9016 D5 9018 D5 9019 D4 9020 D3 9021 D3 9023 C3 9024 E4 9025 D4 9040 E4 9100 C4 9101 C4 9102 E3
9103 E4 9104 E4 9107 D4 9108 E5 9109 E4 9110 E3 9111 E2 9112 D5 9113 C4 9115 E4 9116 E3 9118 C3 9122 E4 9123 E4 9124 E4 9125 E4 9126 D4 9131 D5 9132 B1 9133 E3 9134 E3 9135 E3 9137 E5 9138 E5 9139 D2 9141 D3 9145 D5 9147 D5 9148 D5 9202 D4 9203 C4 9206 C3 9207 C3 9208 D3 9209 C3 9210 E4 9211 D3 9212 D3 9220 D3 9221 C3 9225 C3 9229 D2 9233 D1 9235 D3 9236 D3 9237 C3 9238 D3 9240 C4 9245 D3 9246 D3 9247 C3 9248 C3 9250 D3 9251 D3 9252 D1 9261 D3 9270 C3 9313 E1 9317 D1 9334 E2 9337 E1 9341 E2 9347 E2 9370 E1 9372 E1 9377 E1 9403 B4 9404 C5 9405 C3 9406 B5 9408 C5 9410 C4 9411 B5 9413 C5 9416 C4 9417 C2 9418 D3 9419 C4 9423 C4 9424 C4 9425 C4 9426 D3 9443 D5 9448 B4 9450 A4 9454 A5 9461 B4 9462 B4 9469 C5 9500 A2 9501 A1 9505 B2 9515 A3 9518 C3 9519 C3 9520 C2 9590 C3 9601 D3 9602 C1 9603 B1 9604 D3 9605 D2 9606 E4 9607 C2 9611 D2 9613 D1 9614 D2
7
L7.2E 19
Diagrams and print lay-outs
015_009.EPS
S1 (41 - 7225 - 5D)
L1 (C - 7445)
L2 (3445 / 3442)
L3 (E- 7440)
L4 (40 - 7225 - 5D)
L11 (C - 6454) 5V DC L12 (C - 6443) 13V DC
F1 (7- 7401)
F2 (1 - 7401)
F3 (5- 7401)
F4 (3 - 7401)
1V / div DC 20µs / div
100V / div DC 20µs / div
2V / div DC 20µs / div
2V / div DC 20µs / div
2V / div DC 20µs / div
0.5V / div DC 5ms / div
0.5V / div DC 5ms / div
20V / div DC 5ms / div
10V / div DC 5ms / div
7
L7.2E
V12 (12 - 7225)
Diagrams and print lay-outs
20
0.5V / div DC 20µs / div V13 (3M7)
1V / div DC 20µs / div V14 (2M7)
1V / div DC 20µs / div V15 (4M7)
1V / div DC 20µs / div I1 (6 - 7225 - 5A)
1V / div DC 20µs / div I2 (IF - Tuner)
0.2V / div AC 20µs / div I3 (1 - Tuner)
0.5V / div DC 20µs / div I4 (1 - Tuner) only FST tuner I5 (2 - Tuner) 2V DC
015_010.EPS
V1 (13 - 7225 - 5B)
V2 (38 - 7225 - 5B)
V3 (28 - 7225 - 5B)
V4 (29 - 7225 - 5B)
V5 (30 - 7225 - 5B)
V6 (11 - 7225 - 5B) 3.5V DC (PAL)
V7 (16 - 7241)
1V / div DC 20µs / div V8 (5 - 7255)
1V / div DC 20µs / div V9 (16 - 7255)
1V / div DC 20µs / div V10 (14 - 7255)
0.5V / div DC 20µs / div V11 (11 - 7255)
0.5V / div DC 20µs / div
0.5V / div DC 20µs / div
1V / div DC 20µs / div
0.5V / div DC 20µs / div
0.5V / div DC 20µs / div
0.5V / div DC 20µs / div
7
L7.2E 21
Diagrams and print lay-outs
C1 (52 - 7600) 5V DC
C2 (50 - 7600)
1V / div DC 5ms / div C3 (49 - 7600)
1V / div DC 5ms / div C4 (1 - 1670)
(with RC5 signal)
1V / div DC 5ms / div C5 (41 - 7600)
1V / div DC 0.5µs / div C6 (42 - 7600)
1V / div DC 0.5µs / div
7
L7.2E 22
Diagrams and print lay-outs
015_012.EPS
A1
(Audio out)
(1 - 7225 - 5E)
A2
(55 - 7225 - 5E)
A3
(15 - 7225 - 5E)
A4
(Audio out)
A5
A6
(Video out)
A7, A8, A9, A10
0.1V / div AC 0.1ms / div
5V / div AC 1ms / div
1V / div DC 0.5ms / div
1V / div DC 0.5ms / div
1V / div DC 0.5ms / div
1V / div DC 20µs / div
0.1V / div DC 1ms / div
7
L7.2E
B A H E E A A C C C A287 A288 A296 A300 A301 A302 A319 A334 A340 A341 A342 A343 A372 A373 A374 A375 A376 A377 A378 A379 A380 A381 A382 A390 A399 A428 E B F A A A 5 3 4 4 5 2 B B C D E D E F G C 3 2 3 3 3 2 4 3 2 1 3 3 2 5 5 2 5 4 3 1
Diagrams and print lay-outs
23
1 2 3
0003 0004 0166 0177 0321 0321 0321 0321 0321 0321
H A H C D A B D D D
5 5 4 1 6 5 4 4 5 5
0321 0321 0321 0322 0322 0322 0322 0322 0322 0322
C D B D D B D C D D
4 5 4 6 5 4 5 4 5 4
0322 0322 2313 2321 2323 2333 2341 2342 2373 3311
4 6 2 2 2 2 5 5 5 2
3312 3313 3314 3315 3316 3317 3321 3322 3323 3324
G H F H F G D E E C
2 2 2 3 3 3 2 2 2 2
E C D B B C A B A A
3 3 3 2 2 2 2 3 3 3
3341 3342 3347 3371 3372 3374 5370 6311 6321 6331
4 5 3 4 4 5 5 3 3 3
6332 6341 6347 7301 7302 7303 7304 7305 7306 7307
B H H G D B G F D D
3 2 3 2 2 2 3 3 3 3
A
7
A
1
+200Va
B D G H E B A A F G 2
3325 3326 3327 3331 3332 3333 3334 3335 3336 3337 3
A A H E E E E G D A 4 7308 7309 9341 9370 9372 A056 A280 A281 A282 A285 5 D2 D2 D4 D5 G2 G2 H1 A4 A3 A3 6
+200Va
+200Va
+200Va
200V
A390
3334 15k
3336 220R
6331
1N4148
3342 220k
2341 100n
A428
V15a AQUADAG
2 0321
121V
A334
A280
A
183V
2342 22u/250V
CRT
A
3341 10R
A399
A341
B
B
A340
B
A056
0004
2V1
7303 BF422 B
015_004.EPS 100398
7309 BF422 3337 116V8 1k5 6332
V16a
1V8
3331 1k
A343
2333 *
B
BAV21 7308 BF423
or
3 0321 11 0322
5V1
V16b
B
1
2
3
A342
3332 *
3335 330R
or
9347 A2 9370 B1 9372 B1 9377 B2
A282
A381
6 0322 9 0321 G
A379
3333 47R
or
8 0322 7 0321 R
+200Va FOCUS Vg1
5 0322
A281
C
Vg2
+200Va
C
3326 220R
V16c
0003 B2 0004 A1 0166 B1 0177 B3 0233 A1 0321 B2 0322 A2 2313 B3 * 2321 B3 * 2323 B3 * 2333 A1 * 2341 B1 2342 A1 2373 B2 3311 B3 3312 B3 * 3313 B3 * 3313 B3 * 3314 A3 3315 A3 3316 A2 3317 A2 3321 B3 * 3322 B3 * 3323 B3 * 3324 A3 3325 B3 3326 A3 3327 A3 3331 B1 * 3332 B1 * 3333 B1 * 3334 A1 3335 B3 3336 A1 3337 A1 3341 A1 3342 A1 3347 B3 3371 B1 3372 B1 7308 B1 7309 A1 9313 B1 9317 A1 9334 A3 9337 B1 9341 B3 9347 A2 6347 B3 7301 B3 7302 B3 7303 A1 7304 B3 7305 B2 7306 B3 7307 B3 3374 B2 4677 B1 * 5370 B1 6311 A2 6321 A3 6331 A3 6332 A1 6341 B3
*=chip component
3324 15k
TO or or
1 0322 1 0321 12 0322
0177
FF
FF
183V
1010
D
A372
or
OF
6 0321
4
V15b
4 0321 10 0322
5 0321 9 0322
A287
1 9370
(RES) 3374 1K5
1V8
2323 *
Processing
BAV21 7306 BF423
A380
3321 1k 3322A375 *
E
+200Va 2313 2323 33n 2373 2333 3312 3322 470R 430R 470R 430R 180p 270P 220p 270P 150p 220p
A376
3372 *
A374
5V1 17" 21"
3371 *
5370 *
A300
Video
A296
7302 BF422
A373
D A3 3 2
G
A288
2V1
7307 BF422 3327 115V 1k5 6321
8 0321 7 0322
118V
or
0077
5
A285
3
2
1
3323 47R
3325 330R
E
A
A
+200Va
+200Va
A382
9372
3314 15k
3316 220R
F
3332 3371 1R 2R7 470R 430R
F
A377
183
V15c
124V 5370 200V Vg2 FOCUS EHT 25KV 22u 56u
7305 BF422 6311
B
B
3372
1R
2R7
R
A302
2V1
A301
GND_LOT
FL_A
G
7301 BF422 G
BAV21 120V 3317 1k5
1V8
2313 *
7304 BF423
0003
3
2
1
015_005.EPS 100398
3311 1k 3312 A378 *
0166
5V1
3
2
3313 47R
3315 330R
1
1
RES
TO 0066 OF Line-output A2
9347 A2 9370 B1 9372 B1 9377 B2
2321 RES
6341
9341
3347 1K
H
H
0003 B2 0004 A1 0166 B1 0177 B3 0233 A1 0321 B2 0322 A2 2313 B3 *
A319
BLACK_CURRENT
6347
015_013.EPS
2321 B3 * 2323 B3 * 2333 A1 * 2341 B1 2342 A1 2373 B2 3311 B3 3312 B3 * 3313 B3 *
3313 B3 * 3314 A3 3315 A3 3316 A2 3317 A2 3321 B3 * 3322 B3 * 3323 B3 *
3324 A3 3325 B3 3326 A3 3327 A3 3331 B1 * 3332 B1 * 3333 B1 * 3334 A1
3335 B3 3336 A1 3337 A1 3341 A1 3342 A1 3347 B3 3371 B1 3372 B1
3374 B2 4677 B1 * 5370 B1 6311 A2 6321 A3 6331 A3 6332 A1 6341 B3
6347 B3 7301 B3 7302 B3 7303 A1 7304 B3 7305 B2 7306 B3 7307 B3
7308 B1 7309 A1 9313 B1 9317 A1 9334 A3 9337 B1 9341 B3 9347 A2
*=chip component
BZX79C-8V2
V15a (Blue)
V15b (Green)
V15c (Bleu) V16b (Green)
V16a (Blue)
V16c (Red)
1V / div DC
1V / div DC
1V / div DC
20V / div DC
20V / div DC
20V / div DC
7
L7.2E 24
Diagrams and print lay-outs
015_014.EPS
7
L7.2E 25
Diagrams and print lay-outs
A
A
B
B
1
015_003.EPS 100398 9503 B1 9504 B3 9505 B3 9506 B2 9507 B2 9508 A2 9510 B2 9514 B1 9515 B3
2
3 2
7507 B1 7508 B2 7509 B2 7510 B2 7511 A1 7512 A1 7513 A1 7514 A1 7515 A2 9501 B1
3
1
0022 B3 0033 B1 0130 B3 1501 B2 2501 B2 2502 B1 2503 B1 2504 B1 2505 A1 2506 A1
2507 A1 2508 A2 2509 A1 2510 A1 2511 B2 2512 B2 2513 A2 2514 B2 2515 B3 2516 B3
2517 B3 2518 B3 2519 B3 2520 B3 2521 B2 2522 B1 2523 B1 2524 B1 2525 A2 3501 B2
3502 B2 3503 B2 3504 B2 3505 B2 3506 B1 3507 B2 3508 B1 3509 A1 3510 B1 3511 A1
3522 A2 3523 A2 3524 A2 3525 B2 3526 B2 3527 B2 3528 B2 3529 B2 3530 B2 3531 A2
3532 B2 3533 B2 3534 B3 3536 B3 3537 B3 3539 B2 3540 B2 5501 B1 6501 B1 6502 B2
6503 B2 6504 B3 6505 B3 7220 B3 7501 B1 7502 B3 7503 B2 7504 B2 7505 A1 7506 A1
A
B
0022 B3 0033 B1 0130 B3 1202 B2 1203 B2 1204 A2 2201 B2 * 2202 B2 * 2203 B2 2206 B2 * 2207 B2 * 2208 A2 2209 A1 * 2210 B2 * 2211 A1 * 2212 A1 * 2213 A2 * 2214 A2 * 2215 A2 * 2216 A1 * 2217 A1 * 2220 A1 * 2221 A1 * 2224 A2 * 2225 A2 * 2226 A2 * 2227 A1 * 2228 A2 2229 B1 2230 A1 2231 A1 * 2232 A1 * 2234 A1 2235 A1 * 2236 A1 * 2237 B2 * 2238 B2 * 2239 A1 * 2240 A1 * 2241 A1 2242 A1 * 2243 A1 * 2244 A1 * 2245 B1 2246 B1 * 2247 B1 * 2248 B1 2249 B1 * 2250 B1 2251 B1 * 2252 A1 2253 B1 * 2254 B1 * 2255 A2 2256 B3 * 2257 B3 2260 A1 2261 A2 2262 A2 2263 A2 2264 B3 2265 B3 * 2266 B1 * 2267 B1 * 2268 B1 2271 B3 * 2272 B3 * 2273 B1 * 2274 A1 * 2276 A1 * 2277 A1 * 2278 A1 * 2279 A2 * 2280 A1 * 2281 A1 * 3201 B2 * 3202 B2 * 3203 B2 * 3207 B2 * 3211 B2 * 3213 B3 3214 B2 * 3215 B2 * 3216 B1 3217 B1 3218 A2 * 3219 A2 * 3220 A2 * 3221 A2 * 3222 B2 * 3223 A2 * 3224 A1 * 3227 A1 * 3228 B2 * 3229 B1 * 3230 B1 * 3233 B1 * 3234 B1 * 3235 A1 * 3238 B1 * 3239 B1 * 3240 A1 * 3242 A1 * 3243 B1 * 3244 B1 * 3246 B2 3247 B1 3248 B1 * 3249 B3 3250 B2 3251 B3 * 3252 B3 * 3253 B3 * 3254 B2 4200 B2 * 4201 A2 * 4203 B2 * 4204 B2 * 4205 B2 * 4206 B2 * 4207 B2 * 4209 B2 * 4211 B3 * 4214 B2 * 4220 B1 * 4221 B1 * 4222 B1 * 4223 B1 * 4233 A1 * 5201 B2 * 5202 B2 5203 B1 5204 A1 5205 A2 5206 B2 5207 B2 6201 B2 6202 B2 6204 A1 6205 B1 6206 B3 6207 B3 7201 B2 7202 A1 7203 B1 7204 B3 7205 B2 * 7207 B2 * 7208 B2 * 7209 B1 * 7210 B2 * 7211 A2 * 7212 A2 * 7214 B1 7215 B2 * 7216 B2 * 7220 B3 9200 B1 9201 B2 9202 B2 9205 B3 9206 A2 9207 A2 9208 B1 9209 A2 9210 B1 9211 B1 9212 B1 9213 B3 9214 A2 9215 B2 9216 B1 9217 B2 9220 B2 9221 B3 9223 B1 9224 B2 9257 B3
*=chip component
1
2
3
015_008.EPS 170398
7
L7.2E 26
Diagrams and print lay-outs
015_015.EPS
8
8
Electrical adjustments
Note: Unless stated otherwise, the supply voltage used is: 220V to 240V +/- 10%, 50 - 60 Hz +/- 5%. Voltage and wave forms are measured in respect to earth. Remarks:
Electrical adjustments
L7.2E
27
Enter into TUNER menu, select item AGC for RF AGC adjustment. Connect a multi-meter (DC) at pin 1 of the tuner. The "AGC" value can be increment or decrement by pressing the remote control right or left key. Adjust so that the voltage at pin 1 of the tuner is 5V ( 0.5V DC
Never use the heatsink as earth. Where in the adjustment a pattern generator is mentioned, a colour pattern generator PM5418 has been used with an RF output voltage of 1mV. For some adjustments the set has to be put in the SAM (Service Alignment Mode). When in the text "Enter SAM" is mentioned proceed as follows: Enter SAM by Dealer Service Tool (button "ALIGN"), or via short-circuit the service pins 0028 and 0029 on the main PCB while switching on the set via the mains switch. The SAM menu is displayed when the SAM mode is entered (see also chapter 5).
8.1.5
Picture demodulator adjustment.
Enter SAM . Enter into TUNER menu Connect a signal generator (PM5326) to pin 11 of the tuner
* IF-PLL setting (for all versions) Set generator signal to 38.9MHz (negative modulation). Set AFW = 80 and adjust IF PLL until AFA = 1 and AFB is just switching from 1 to 0 or 0 to 1.
* IF-PLL L ACCENT setting
8.1
8.1.1
Settings on the main chassis panel
(95V supply voltage (17", 21" )
Connect a multi meter (DC) across C2551. Set brightness and contrast to minimum Tune to a colour-bar test signal Apply a colour bar pattern. Adjust potentiometer R3540 to: · 96.7V +/- 1V for 21" sets · 100V +/- 1V for 17" sets.
Set generator signal to 33.9MHz (positive modulation) in Band I & System L for Mono BGLI version Set generator signal to 34.0MHz (positive modulation) in Band I & System L for Nicam BGLI version. Set AFW = 80 and adjust IF PLL ACCENT until AFA = 1 and AFB is just switching from 1 to 0 or 0 to 1.
Remark: For IF PLL ACCENT adjustment, the set has to be tuned on system France, VHF 1 and varicap voltage <9V.
8.2
8.1.2 Geometry adjustments (software adjustment) 8.2.1
Apply a cross hatch pattern Enter SAM. Enter into GEOMETRY menu. The value of the geometry settings can be decrement or increment by pressing the right or left key on the remote control.
Vg2 and white-D settings
Vg2 cut off alignment
Apply a black picture pattern. Connect an oscilloscope to the picture tube cathodes for red, green and blue. Set the oscilloscope to DC 50V/Div and 2ms/Div. Measure the DC level of the measuring pulses at the end of the frame blanking (see Fig 8.1) Adjust the VG2 potmeter (lower knob on the LOT) so that the measuring pulses with the highest level are: · 140V +/- 2V for 21" · 130V +/- 2V for 17"
Remark: Before doing the geometry alignment HSH,VSH and VAM, set first item VS (vertical slope) to 25 and SC (Vertical Scorrection) to 13 for 21" and to 15 for 17". * Horizontal centring
8.2.2
Select item HSH for horizontal shift. * Vertical centring Select item VSH for vertical shift * Picture height Select item VAM for vertical amplitude .
White-D adjustment (software adjustment)
Enter into WHITE TONE menu, select item WARN, COOL or NORMAL, only one of the three items Apply a white raster pattern. Enter SAM (see chapter 6). (R, G or B) will be displayed on the screen. The initial default value for all setting is 37. The factory settings of the colour temperatures are : · WARM(R = 45, G = 32, B = 26) · NORMAL(R = 37, G = X, B = Y) · COOL(R = 37, G = 32, B = 31)
8.1.3
Focusing
Apply a cross hatch pattern. Set brightness and contrast at maximum. Adjusted with focusing potentiometer (upper knob of LOT 5445 ) for maximum sharpness of the picture.
Remark: X and Y values in NORMAL setting are adjusted for 8500K colour temperature.
8.1.4
RF-AGC adjustment (software adjustment)
Apply a PAL colour bar pattern and set RF-frequency on 189.25MHz (output voltage 1mV). Enter SAM
28
L7.2E
8
Electrical adjustments
MEASURING PULS
Vcu 0V
Figure 8-1
ADJUST LEVEL
CL 86532008_006.ai 160298
Main panel (component side view)
7620 EEPROM 7600 µP 0025 0024 SDM
Hot Area
0028 SAM 0029
17" 100V ±1V 21" 96V7 ± 1V AUDIO PANEL VBATT
3540
7225 TV.PROC.
LOT
1900 TUNER
Focus Screen
CRT panel (track side view)
1 0166 8 0177 1 0322 1
CL86532008_010.ai 170298
Figure 8-2
9
9
Circuit diagram description
Introduction
Circuit diagram description
L7.2E
9.1.5 Primary current (I-prim) sensing (pin 7 of IC7520)
29
For a quick overall view of all diagrams see the block diagram on sheet 4. This chassis is executed with:
The current sense voltage Vpin 7 is a measure for the I-prim through FET 7518. The I-prim is converted into a voltage by R3518. The current sense voltage Vpin 7 is used to control both the secondary output voltages and the maximum I-prim.
9.1.6
A mains isolated SMPS (switched mode power supply) A single chip TV processor with software controlled picture geometry adjustments Micro computer with teletext function (execution depended)Separate audio module (multi mono or NICAM) with output amplifier
Demagnetization control (pin 8 0f IC7520)
The voltage across winding 1 - 2 has the same polarity as the voltage across the secondary windings. As a result the voltage across this winding is negative during the FET is conducting, and positive during the FET is not conducting. The so called demagnetization "DEMAG" function in IC7520 (input pin 8) is used for blocking the output Vpin3 during the time that there is still energy in the transformer (Isec not zero). This is realized by delaying the switch "on" point of the FET until the demagnetization is completely finished.
9.1
9.1.1
Power supply (Diagram A1)
Mains input and degaussing 9.1.7
The mains voltage is filtered by L5500, L5501 and L5502, full wave rectified by a diode bridge (6502-6505) and smoothed by C2508. The DC voltage for the SMPS is applied at pin 7 of T5545 (e.g. 300V DC for 220V AC mains). The degaussing current is applied via dual PTC resistor R3504 After switching "on" the set, the PTC is cold so low-ohmic and therefore the degaussing current is very high. During degaussing, the PTC is heated up and is getting high-ohmic, as a result the current through the PTC becomes very low.
Standby mode
In the standby mode the load decreases under a certain threshold level. The SMPS is than switching to the so called "reduced frequency mode". The switching frequency is than reduced to 20 kHz. The minimal load threshold level is determined by R3532 connected to pin 12. In normal operation mode the internal oscillator is adjusted at 70 kHz. This frequency is determined by C2531 and R3537 connected to pin 10 and pin 16 respectively of the IC7520. In standby mode the internal oscillator is adjusted at 20 KHz. This frequency is determined by R3536 connected to pin 15 IC7520.
9.1.2
Switched mode power supply
The switched mode power