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Colour Television
Chassis
L01.2E
AA
(SMALL SCREEN)
CL 16532008_041.eps 160501
Contents
1. Technical Specifications, Connections and Chassis Overview 2. Safety & Maintenance Instructions, Warnings and Notes 3. Directions for Use 4. Mechanical Instructions 5. Service Modes, Error Codes and Faultfinding 6. Block Diagram, Testpoints, I2C And Supply Voltage Overview Block Diagram Testpoint Overview I2C And Supply Voltage Overview 7. Electrical Diagrams and PWB's Power Supply (Diagram A1) Line Deflection (Diagram A2) Frame Deflection (Diagram A3) Tuner IF (Diagram A4) Video IF and Sound IF (Diagram A5) Synchronization (Diagram A6) Control (Diagram A7) Audio Amplifier (Diagram A8) BTSC (Stereo/SAP) Decoder (Diagram A9) Audio/Video Source Switching (Diagram A10) Front I/O + Control, Headphon (Diagram A12) Rear I/O SCART (Diagram A14) CRT Panel (Diagram B) Side AV and Headphone Panel (Diagram C) Side AV (Diagram E) Side AV and Headphone Panel (Diagram E1)
Page
2 4 5 9 10
Contents
8. Alignments 9. Circuit Description List of Abbreviations 10 Spare Parts List
Page
43 50 60 62
17 18 19 Diagram 20 21 22 23 24 25 26 27 28 29 30 31 38 40 41 42
PWB 32-37 32-37 32-37 32-37 32-37 32-37 32-37 32-37 32-37 32-37 32-37 32-37 39 40 41 42
©
Copyright 2001 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 permission of Philips. Printed in the Netherlands Subject to modification
Published by RB 0166 Service PaCE
3122 785 11150
GB 2
1.
L01.2E
Technical Specifications, Connections and Chassis Overview
1. Technical Specifications, Connections and Chassis Overview
Note: Described specifications are valid for the whole product range. Channel selections : NTSC 4.43 (playback only) : 100 channels : UVSH : 38.9 MHz : 75 W, Coax
1.1
1.1.1
Technical Specifications
Reception 1.1.2 Tuning system Colour systems Sound systems PLL PAL B/G, D/K, I SECAM B/G, L/L' FM/AM mono FM stereo (2CS) NICAM FM radio (10.7 MHz) : PAL BG : SECAM L/L' : NTSC 3.58 (playback only) : : : : : : :
IF frequency Aerial input Miscellaneous Audio output (RMS)
Mains voltage Mains frequency Ambient temperature Maximum humidity Power consumption Standby Power consumption
: : : : : : : : : : :
A/V connections
1 W mono 2 W mono 4 W mono 2 x 3 W stereo 220 - 240 V (± 10 %) 50 / 60 Hz (± 5 %) + 5 to + 45 deg. C 90 % 36 W (14") to 52 W (21") <3W
1.2
1.2.1
Connections
Front (or Side) Connections and Front (or Top) Control
V-
V+
C-
C+
Mono
IR RED
V-
V+
C-
C+
Video
R L Audio
- VOLUME +
P+ VV+ PCL 16532016_020.eps 220501
- PROGRAM +
Figure 1-1 Audio / Video In 1 - Headphone 3.5 mm (8 - 600 W / 4 mW) 2 - Video CVBS (1 Vpp / 75 W) 3 - Audio Mono (0.5 Vrms / 10 kW)
Technical Specifications, Connections and Chassis Overview
1.2.2 Rear Connections
L01.2E
1.
GB 3
75 Ohm
FM
EXTERNAL 1
(0.7 Vpp / 75 W) GND GND (0.7 Vpp / 75 W) 0 - 0.4 V: INT 1 - 3 V: EXT / 75 W GND GND (1 Vpp / 75 W) (1 Vpp / 75 W) GND
CL 16532008_042.eps 230501
Figure 1-2 .eps External 1: RGB/YUV in + CVBS in/out
1
21
2
20
CL96532137_056.eps 171199
TV Aerial In Aerial input
: 75 W, coax (IECtype)
Figure 1-3
FM Radio In Aerial input
1.3
Chassis Overview
E1 E C
SIDE AV PANEL + HEADPHONE SIDE AV PANEL SIDE AV PANEL + HPMB MAIN CHASSIS PANEL POWER SUPPLY LINE DEFLECTION FRAME DEFLECTION TUNER IF VIDEO + SOUND IF SYNCHRONISATION CONTROL (µP) AUDIO AMPLIFIER NICAM + 2CS + BTSC DECODER A/V SWITCHING HEADPHONE + FR. CONTROL REAR I/O SCART
1 2 3 4
- Audio - Audio - Audio -
R (0.5 Vrms / 1 kW) R (0.5 Vrms / 10 kW) L (0.5 Vrms / 1 kW) GND
: via `coax-to-3 pins' adapter : `cable' or `wire' antenna
CRT PANEL
B A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A12 A14
CL 16532008_043.eps 160501
Figure 1-4
9 1011- Green / Y 12131415- Red / V 16- RGB-status 171819- CVBS 20- CVBS 21- Earth
5 6 7 8
- Audio - Blue / U - CVBS-status
GND L (0.5 Vrms / 10 kW) (0.7 Vpp / 75 W) 0 - 2.0 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 GND
GB 4
2.
L01.2E
Safety & Maintenance Instructions, Warnings, and Notes
2. Safety & Maintenance Instructions, Warnings, and Notes
2.1 Safety Instructions For Repairs
Safety regulations require that during a repair: · Due to the `hot' parts of this chassis, the set must be connected to the AC power via an isolation transformer. , should · Safety components, indicated by the symbol be replaced by components identical to the original ones. · When replacing the CRT, safety goggles must be worn. Safety regulations require that after a repair, the set must be returned in its original condition. Pay particular attention to the following points: · General repair instruction: as a strict precaution, we advise you to re-solder the solder connections 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 re-soldering is advised to prevent bad connections due to metal fatigue in solder connections and is therefore only necessary for television sets more than two years old. · Route the wire trees and EHT cable correctly and secure them with the mounted cable clamps. · Check the insulation of the AC power cord for external damage. · Check the strain relief of the AC power cord for proper function, to prevent the cord from touching the CRT, hot components, or heat sinks. · Check the electrical DC resistance between the AC plug and the secondary side (only for sets that have an isolated power supply). Do this as follows: 1. Unplug the AC power cord and connect a wire between the two pins of the AC plug. 2. Turn on the main power switch (keep the AC power cord unplugged!). 3. Measure the resistance value between the pins of the AC plug and the metal shielding of the tuner or the aerial connection of the set. The reading should be between 4.5 MW and 12 MW. 4. Switch the TV OFF and remove the wire between the two pins of the AC plug. · Check the cabinet for defects, to prevent the possibility of the customer touching any internal parts.
2.3
Warnings
· In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to prevent damage to the picture tube, use the method shown in Fig. 2-1, to discharge the picture tube. Use a high voltage probe and a multi-meter (position VDC). Discharge until the meter reading is 0 V (after approx. 30 s).
·
· · ·
2.4
Notes
· Measure the voltages and waveforms with regard to the chassis (= tuner) ground ( ), or hot ground ( ), depending on the area of circuitry being tested. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a color bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz (PAL) or 61.25 MHz (NTSC, channel 3). Where necessary, measure the waveforms and voltages with ( ) and without ( ) aerial signal. Measure the voltages in the power supply section both in normal operation ( ) and in standby ( ). These values are indicated by means of the appropriate symbols. The picture tube panel has printed spark gaps. Each spark gap is connected between an electrode of the picture tube and the Aquadag coating. 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.
2.2
Maintenance Instructions
· It is recommended to have a maintenance inspection carried out by qualified service personnel. 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 three to five years. · When the set is used in an environment with higher dust, grease or moisture levels, for example in a kitchen, the recommended interval is one year. · The maintenance inspection includes the following actions: 1. Perform the 'general repair instruction' noted above. 2. Clean the power supply and deflection circuitry on the chassis. 3. Clean the picture tube panel and the neck of the picture tube.
·
·
·
V
CL 26532098/042 140792
Figure 2-1 · All ICs and many other semiconductors are susceptible . Careless handling to electrostatic discharges (ESD) 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 potential. Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable, and ground cable) 4822 310 10671. Wristband tester 4822 344 13999. Together with the deflection unit and any multi-pole unit, flat square picture tubes form an integrated unit. The deflection and the multi-pole units are set optimally at the factory. Adjustment of this unit during repair is therefore not recommended. Be careful during measurements in the high voltage section and on the picture tube. Never replace modules or other components while the unit is switched ON. When you align the set, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable.
Installing your television set
Screen information / permanent no. Radio / TV mode To switch the TV set to radio or TV mode (for versions equipped with radio).
Remote control keys
& Positioning the television set
" Remote control
5 cm
5 cm
5 cm
To display / clear the program number, name (if it exists), time, audio mode and time remaining for the sleep feature. Press the key for 5 seconds to activate permanent display of the number.This key is also used to exit from the menu. VCR key *
Standby Lets you place the TV set on standby.To turn on the TV, press P @ @, b, 0 to 9 (or Â). Teletext keys (p. 8), VCR keys (p.11) and list of radio stations i (p. 5) Sleep To select an automatic standby after a preset time (from 0 to 240 minutes). To enlarge or compress the picture vertically
3. Directions for Use
Place your TV on a solid, stable surface, leaving a space of at least 5 cm around the appliance. To avoid accidents, do not put anything on the set such as a cloth or cover, a container full of liquid (vase) or a heat source (lamp).The set must not be exposed to water.
Incredible Surround (only available on certain versions) To activate / disable the Incredible Surround feature. In stereo, the speakers appear further apart. In mono, a pseudospatial stereo effect is obtained.
é Connections
Pre-set sound Used to access a series of stored settings: Speech, Music, Theatre and return to Personal. Menu To call up or exit the menus. Cursor / Format 16:9 These 4 keys are used to navigate through the menus.The îÏ keys are used to enlarge or compress the picture vertically. Volume To adjust the sound level Mute To mute or restore the sound. Number keys Direct access to the programmes. For a 2 digit program, enter the 2nd digit before the dash disappears. Selection of EXT socket Press several times to select EXT1, EXT2, S-VHS and AV.
Insert the two R6-type batteries (supplied) making sure that they are the right way round. Check that the mode selector is set to TV. The batteries supplied with this appliance do not contain mercury or nickel cadmium. If you have access to a recycling facility, please do not discard your used batteries (if in doubt, consult your dealer).When the batteries are replaced, use the same type.
` Switching on
Pre-set image Used to access a series of stored settings: Bright, Natural, Soft, Multimedia and return to Personal. Teletext (p. 8) Program selection To access the next or previous programme.The number, (name) and sound mode are displayed for a few moments. For some programs, the title of the program will be displayed at the bottom of the screen. Teletext keys (p.8) or VCR keys *
Directions for Use
FM. ANT.
· Insert the aerial plug into the : socket at the rear of the set. · For the versions equipped with a radio: insert the radio aerial socket into the FM ANT socket using the adapter supplied. If you are using an indoor aerial, reception may be difficult in certain conditions.You can improve reception by rotating the aerial. If the reception remains poor, you will need to use an external aerial. · Insert the mains plug into a wall socket (220240 V / 50 Hz). To switch on the set, press the on/off key. A red indicator comes on and the screen lights up. Go straight to the chapter Quick installation on page 4. If the television remains in standby mode, press P # on the remote control. The indicator will flash when you use the remote control.
The keys on the TV set
L01.2E
The television set has 4 keys which are located on the front or the top of the set depending on the model.
Sound mode (only available on stereo versions) Used to force programmes in Stereo to Mono or, for bilingual programs, to choose between Dual I or Dual II. For TV sets equipped for Nicam reception, depending on the programmes, you can force the Stereo Nicam sound to Mono or select between Nicam Dual I, Nicam Dual II and Mono. The Mono indication is red when in forced position.
3.
The VOLUME - + (- " +) keys are used to adjust sound levels.The PROGRAM - + (- P +) keys are used to select the required programmes. To access the menus, simultaneously hold down the " - and " + keys.The PROGRAM - + keys may then be used to select an adjustment and the - " + keys to make that adjustment. To exit from the menus, hold down the 2 " and " + keys. Note: when the Child Lock function is activated, these keys are unavailable (refer to Features menu on page 7).
* VCR key The remote control lets you control the main functions of the VCR. Press and hold down the VCR key located on the side of the remote control, then press one of the keys to access the VCR functions: b % H îÏ È¬ P @# · ¢ Ê Æ 09 The remote control is compatible with all VCRs using the RC5 standard.
GB 5
2
3
GB 6
Quick installation Manual store
This menu is used to store the programmes one at a time. & Press the H key. é With the cursor, select the Install menu then Manual store: `
3.
The first time you switch on the television, a menu appears on the screen and the tuning starts automatically.
Auto Store
· Program 2 · TV 470 MHz · ································
Mainge · Picture · Sound · Features $ Install
Europe Æ
L01.2E
· · · ·
Manual Store $ System Search Program No. Fine Tune Store
( §
If the menu is not displayed, press and hold down the "- and "+ keys on the TV set for 5 seconds to start the tuning. All the available TV programs and radio stations * will be stored. This operation takes a few minutes.The display shows the progress of the " System: select Europe (automatic detection*) or Western Europe (BG standard), Eastern Europe (DK standard), United Kingdom (I standard) or France (LL' standard). ç è !
search and the number of programs found. At the end of the search, the menu disappears. To exit or interrupt the search, press H. If no program is found, consult the possible solutions p. 12. & If the transmitter or cable network sends the automatic sort signal, the programs will be numbered correctly. In this case, the installation is complete. é If this is not the case, you need to use the Sort menu to number the programs correctly. Some transmitters or cable networks broadcast their own sort parameters (region, language, etc.). In this case, indicate your choice using the îÏ keys and validate with ¬. * Only on versions equipped with a radio.
* Except for France (LL' standard), you must select choice France. Search: press ¬.The search starts. Once a programme is found, the scanning stops and its name is displayed (when available). Go to the next step. If you know the frequency of the required programme, this can be entered directly using the 0 to 9 keys. If no picture is found, consult the possible solutions (p. 10). Program No.: enter the required number with the Ȭ or 0 to 9 keys. Fine Tune: if the reception is not satisfactory, adjust using the Ȭ keys. Store: press ¬.The program is stored. Repeat steps ` to ! for each programme to store. To quit the menus, press d.
Program sort
Other settings in the Install menu
Directions for Use
& Press key H.The Main menu is displayed on the screen.
Mainge · Picture · Sound · Features $ Install
Install · Language · Country · Auto Store · Manual Store $ Sort Æ · Name
00 01 TF1 02 FR2 03 Æ FR3 04 C + 05 ARTE
é With the cursor, select the Install menu followed by the Sort menu. " Select the programme you want to move using the îÏ keys and press ¬. ` Then use the îÏ keys to select the new number and validate with È. ( Repeat steps " and ` for each program you wish to renumber. § To quit the menus, press d.
& Press the H key and select the Install menu: é Language: to change the display language for the menus. " Country: to select your country (GB for Great Britain). This setting is used for the search, automatic programme sort and teletext display. If your country does not appear in the list, select ". . ." ` Auto Store: to start automatic search for all programmes available in your region. If the transmitter or cable network sends the
automatic sort signal, the programmes will be numbered correctly. If this is not the case, you need to use the Sort menu to renumber the programmes (see p. 4). Some transmitters or cable networks broadcast their own sort parameters (region, language, etc.). In this case, indicate your choice using the îÏ keys and validate with ¬.To quit or interrupt the search, press H. If no picture is found, consult the possible solutions (p. 10). ( To quit the menus, press d.
Program name
` Use the Ȭ keys to move around the name display area (5 characters) and the îÏ keys to select the characters. ( When the name has been entered, use the È key to exit.The name is stored. § Repeat steps " to ( for each programme you wish to name. è To quit the menus, press d.
Using the radio (only available on certain versions)
Choice of TV or radio mode Press the  key on the remote control to switch the TV set to either TV or radio mode. In radio mode, the number, station name (if available), frequency and sound mode are displayed on the screen. To enter the station names, use the Name menu (p. 4) Program selection Use the 0 9 or @ P # keys to select the FM stations (from 1 to 40). List of radio stations Press the i key to display the list of radio stations radio. Use the îÏ keys to change station and the d key to exit. Using the radio menus Use the H key to access the specific radio setting. Search for radio stations If you used the quick installation, all available FM stations have already been stored.To start a new search, use the Install :Auto Store menu (for a complete search) or Manual Store (for a station by station search).The Sort and Name menus let you sort or name the radio stations. Operation of these menus is the same as for the TV menus.
If required, you can give a name to the programmes and external connectors. Note: on installation, the programs are named automatically when an identification signal is sent. & Press the H key. é With the cursor, select the Install menu, then Name " Use the îÏ keys to select the programme to name or rename.
4
5
Picture settings
Timer function (only available on certain versions)
& Press H then ¬.The Picture menu is displayed:
Mainge
$ Picture · Sound · Features · Install Mainge · Picture · Sound $ Features · Install
--I------ 39
This menu lets you use the TV set as an alarm. & Press the H key. é With the cursor, select the Options menu then Timer : " Sleep: to select an automatic standby period.
Timer 10:56
Picture $ Brightness · Colour · Contrast · Sharpness · Colour Temp. · Store · · · · · Sleep $ Time Start Time Stop Time Program No. Activate
é Use the îÏ keys to select a setting and the Ȭ keys to adjust. Note: during the picture adjustment, only the selected line remains displayed. Press îÏ to display the menu again.
" Once the adjustments have been made, select Store and press ¬ to store them. Press d to exit. Description of the adjustments: · Brightness: this changes picture brilliance. · Colour: this changes the intensity of the colour. · Contrast: this changes the difference between the light and dark tones. · Sharpness: this changes the picture definition. · Colour Temp.: this changes the colour rendering: Cold (bluer), Normal (balanced) or Warm (redder). · Store: to store the picture adjustments and settings (as well as the settings for Contrast + and NR in the Features menu).
Sound adjustments
& Press H, select Sound (Ï) and press ¬. The Sound menu is displayed:
This setting is also available via the ` key on the remote control. ` Time: enter the current time. Note: the time is updated automatically each time the TV set is switched on via the teletext information on program no. 1. If this program does not have teletext, the update will not take place.
( Start Time: enter the start time. § Stop Time: enter the standby time. è Program No.: enter the number of the programme for the wake-up alarm. For models equipped with a radio, you can select an FM station by using the Ȭ keys (the 09 keys are only used to select TV programs). ! Activate: the settings include: · Once for a single alarm, · Daily for each day, · Stop to cancel. ç Press b to put the TV set in standby. It will automatically come on at the time programmed. If you leave the TV set on, it will just change programmes at the time entered (and will go to standby mode at the Stop Time). By combining the TV lock and Timer functions, you can restrict the period during which the TV set is used, for example by your children.
TV lock (only available on certain versions)
You can block certain programs or inhibit use of the TV set completely by locking the keys.
Mainge · Picture $ Sound · Features · Install
Sound · Treble · Bass · Balance · Delta Volume · AVL · Store
-----I--- 56
Directions for Use
é Use the îÏ keys to select a setting and the Ȭ keys to adjust. " Once the adjustments have been made, select Store and press ¬ to store these changes. ` To quit the menus, press d.
Description of the settings: · Treble: this alters the high frequency sounds. · Bass: this alters the low frequency sounds. · Balance: this balances the sound on the left and right speakers. · Delta Volume*: this is used to compensate any volume discrepancies between the different programs or EXT sockets.This setting is available for programs 0 to 40 and the EXT sockets. · AVL* (Automatic Volume Leveller): this is used to limit increases in sound, especially on program change or advertising slots. · Store: this is used to store the sound settings. * Only available on certain versions.
Child lock
& Press H. é With the cursor, select the Options menu and position Child Lock to On. " Turn off the TV set and hide the remote control.The TV set cannot be used (except via the remote control). ` To cancel: position Child Lock to Off.
"
L01.2E
Feature settings
Mainge · Picture · Sound $ Features · Install
Features · Timer · Child Lock · Parental Cont. · Contrast + · NR
Arrêt
`
Parental control
& Press the H key, select the Features menu then Parental Cont.: é You must enter your secret access code.
( § è
& Press H, select Features (Ï) and press ¬. You can adjust: é Timer, Child Lock and Parental Cont.: see next page " Contrast +: automatic adjustment of the picture contrast which permanently sets the darkest part of the picture to black.
` NR: attenuates picture noise (snow) in difficult reception conditions. Caution: to store the Contrast + and NR settings, use the Store choice in the Picture menu. ( To quit the menus, press d.
3.
The first time you enter this, enter code 0711 twice and then enter your new code choice. The menu is displayed. Parental Cont.: Use the îÏ keys to select the TV programme required and validate with ¬.The + symbol will be displayed opposite the programmes or sockets that are locked. From now on, to view a locked programme, you must enter your secret code, otherwise the screen will stay blank. The access to the Install menu is also locked. Caution, for encrypted programs using an external decoder, you must lock the corresponding EXT socket. Change code: this allows you to enter a new 4 digit code. Confirm your new code by entering it a second time. If you have forgotten your secret code, enter the universal code 0711 twice. Unlock all: this is used to unlock all locked programmes. Lock All: this is used to lock all the TV programmes and EXT connectors. Press the d key to quit.
GB 7
6
7
GB 8
Teletext
Depending on the versions, the TV set will be equipped with 1 or 2 SCART connectors EXT1 and EXT2 located on the rear. The EXT1 socket has audio, CVBS/RGB inputs and audio, CVBS outputs.The EXT2 socket (if available) has audio, CVBS/S-VHS inputs and audio, CVBS outputs.
Connecting peripheral equipment
3.
Teletext is an information system broadcast by certain channels which can be consulted like a newspaper. It also offers access to subtitles for viewers with hearing problems or who are not familiar with the transmission language (cable networks, satellite channels, etc.). You will obtain:
Press :
Video recorder
¤
EXT 2 EXT 1
Teletext call
POWER
.
L01.2E
%
i
TM
>
Ó
Y
- TV
- VCR
This is used to call teletext, change to transparent mode and then exit.The summary appears with a list of items that can be accessed. Each item has a corresponding 3 digit page number. If the channel selected does not broadcast teletext, the indication 100 will be displayed and the screen will remain blank (in this case, exit teletext and select another channel).
VCR
I.S.
Ë
`
SMART
RADIO
SMART
0
9
-
ª
Selecting a page
Carry out the connections shown opposite, using a good quality euroconnector cable. If your video recorder does not have a euroconnector socket, the only connection possible is via the aerial cable.You will therefore need to tune in your video recorder's test signal and assign it programme number 0 (refer to manual store, p. 6). To reproduce the video recorder picture, press 0. Video recorder with decoder Connect the decoder to the second euroconnector socket of the video recorder.You will then be able to record scrambled transmissions.
MENU
¤
Other equipment
EXT 2 EXT 1
+
+
Enter the number of the page required using the 0 to 9 or @ P # keys, îÏ. Example: page 120, enter 1 2 0.The number is displayed top left, the counter turns and then the page is displayed. Repeat this operation to view another page. If the counter continues to search, this means that the page is not transmitted. Select another number.
"
-
[
-
P
·
¢
Ê
Æ
Direct access to the items
Satellite receiver, decoder, CDV, games, etc. For TV sets with 2 SCART connectors, preferably connect the equipment delivering RGB signals (digital decoders, DVD players, games consoles, etc.) to EXT1 and the equipment delivering S-VHS signals (S-VHS and Hi-8 VCRs) to EXT2.
1
2
3
4
5
6
Coloured areas are displayed at the bottom of the screen. The 4 coloured keys are used to access the items or corresponding pages. The coloured areas flash when the item or the page is not yet available.
Amplifier
(only available on certain versions)
7
8
9
Directions for Use
Y
0
EXT 2 EXT 1 L R
ù
Ë
Contents
This returns you to the contents page (usually page 100).
TM
Temporary stop
This is used to temporarily disable or activate the teletext display.
To connect to a hi-fi system, use an audio connection cable and connect the "L" and "R" outputs on the TV set to the "AUDIO IN" "L" and "R" input on your hi-fi amplifier.
>
Enlarge a page
This allows you to display the top or bottom part of the page and then return to normal size.
Front panel connectors
(only available on certain versions)
Ó
Stop sub-page acquisition
Certain pages contain sub-pages which are automatically displayed successively.This key is used to stop or resume sub-page acquisition.The indication _ appears top left.
Y
Hidden information
To display or hide the concealed information (games solutions).
MENU
Favourite pages
Depending on the versions, the connectors are located on the front (sometimes under a flap) or on the right-hand side of the TV set. Make the connections as shown opposite.With the n key, select AV. For a monophonic device, connect the audio signal to the AUDIO L input. Use the e key to reproduce the sound on the left and right speakers of the TV set. Headphones When headphones are connected, the sound on the TV set will be cut.The @ P # keys are used to adjust the volume level. The headphone impedance must be between 32 and 600 Ohms.
Ë
4 7
Y
5 8 0
6 9
ù
For teletext programs 0 to 40, you can store 4 favourite pages which can then be accessed directly using the coloured keys (red, green, yellow, blue). & Press the H key to change to favourite pages mode. é Display the teletext page that you want to store. " Press the coloured key of your choice for 3 seconds. The page is now stored. ` Repeat the operation with the other coloured keys. ( You can now consult teletext and your favourite pages will appear in colour at the bottom of the screen.To retrieve the standard items, press H. To clear everything, press d for 5 seconds.
To select connected equipment
Press the n key to select EXT1 and on the versions with 2 scarts, EXT2, S-VHS2 (S-VHS signals from the EXT2 socket) and AV for the side connections (if available). Most equipment (decoder, video recorder) carries out the switching itself.
8
9
Mechanical Instructions
L01.2E
4.
GB 9
4. Mechanical Instructions
Note: Figures below can deviate slightly from the actual situation, due to the different set executions.
4.3
Side I/O Panel Removal (if present)
1. Remove the complete Side I/O assembly, after unscrewing the 2 fixation screws [1]. 2. Release the two fixation clamps [2] and lift the board out of the bracket.
4.1
Rear Cover Removal
1. Remove all (seven) fixation screws of the rear cover: two at the top, two at each side and one near the mains cord holder. 2. Now pull the rear cover backward to remove it.
4.2
Service Position Main Panel
1. Disconnect the strain relief of the Mains cord. 2. Remove the main panel, by pushing the two centre clips outward [1]. At the same time, pull the panel away from the CRT [2]. 3. Disconnect the degaussing coil by removing the cable from (red) connector 0201. 4. Move the panel somewhat to the left and flip it 90 degrees [3], with the components towards the CRT.
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Figure 4-2
1 1
4.4
Rear Cover Mounting
Before you mount the rear cover: 1. Place the mains cord correctly in its guiding brackets (strain relief). 2. Place all cables in their original position.
2
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Service Modes, Error Codes and Fault Finding
5. Service Modes, Error Codes and Fault Finding
Index of this chapter: 1. Test points. 2. Service Modes. 3. Problems and Solving Tips (related to CSM). 4. ComPair. 5. Error Codes. 6. The Blinking LED Procedure. 7. Protections. 8. Repair Tips. 5.2.1 Service Default Mode (SDM) Purpose · To create a predefined setting to get the same measurement results as given in this manual. · To override SW protections. · To start the blinking LED procedure. Specifications · Tuning frequency: 475.25 MHz for PAL/SECAM (Europe and AP-PAL). 61.25 MHz (channel 3) for NTSC-sets (AP-NTSC). · Colour system: SECAM L for France. NTSC for NAFTA and AP-NTSC. PAL-BG for Europe and AP-PAL. · All picture settings at 50 % (brightness, colour contrast, hue). · Bass, treble and balance at 50 %; volume at 25 %. · All service-unfriendly modes (if present) are disabled, like: (sleep) timer, child/parental lock, blue mute, hotel/hospitality mode auto switch-off (when no `IDENT' video signal is received for 15 minutes), skip/blank of non-favourite pre-sets/channels, auto store of personal pre-sets, auto user menu time-out. How to enter SDM Use one of the following methods: · Use a standard customer RC-transmitter and key in the code `062596' directly followed by the MENU button or · Short wires 9631 and 9641 on the mono carrier (see Fig. 8-1) and apply Mains voltage. Then press the power button (remove the short after start-up). Caution: Entering SDM by shorten wires 9631 and 9641 will override the +8V-protection. Do this only for a short period. When doing this, the service-technician must know exactly what he is doing, as it could lead to damaging the set. · Or via ComPair.
5.1
Test Points
The chassis is equipped with test points printed on the circuit board assemblies. These test points refer to the functional blocks:
TEST POINT OVERVIEW L01 Test point Circuit Diagram A1-A2-A3-..... Audio processing A8, A9 / A11 C1-C2-C3-..... Control A7 F1-F2-F3-..... Frame drive A3 I1-I2-I3-..... Tuner & IF A4 L1-L2-L3-.... Line drive A2 P1-P2-P3-..... Power supply A1 S1-S2-S3-..... Synchronisation A6 V1-V2-V3-..... Video processing A5, B1
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Figure 5-1 The numbering is in a logical sequence for diagnostics. Always start diagnosing within a functional block in the sequence of the relevant test points for that block. Perform measurements under the following conditions: · Service Default Mode. · Video: colour bar signal. · Audio: 3 kHz left, 1 kHz right.
5.2
Service Modes
Service Default Mode (SDM) and Service Alignment Mode (SAM) offer several features for the service technician, while the Customer Service Menu (CSM) is used for communication between dealer and customer. There is also the option of using ComPair, a hardware interface between a computer (see requirements) and the TV chassis. It offers the ability of structured trouble shooting, error code reading and software version readout for all L01 chassis. Minimum requirements: a 486 processor, Windows 3.1 and a CD-ROM drive. A Pentium Processor and Windows 95/98 are also acceptable (see also paragraph 5.4).
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Service Modes, Error Codes and Fault Finding
After entering SDM, the following screen is visible, with SDM at the upper right side for recognition. ·
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A A A B C D E E
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S D M
Specifications · Operation hours counter. · Software version. · Option settings. · Error buffer reading and erasing. · Software alignments. How to enter Use one of the following methods: · Use a standard customer RC-transmitter and key in the code `062596' directly followed by the OSD/STATUS button [i+] or · Via ComPair. The following screen is visible, with SAM at the upper right side for recognition.
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Figure 5-4
S D M
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Figure 5-3 How to navigate Use one of the following methods: · When you press the MENU button on the remote control, the set will switch between the SDM and the normal user menu (with the SDM mode still active in the background). Return to the SDM screen with the OSD/STATUS button. · When you press the OSD/STATUS button on the remote control, the menu will show or hide the error buffer. This feature is available to prevent interference during waveform measurements. · On the TV, press and hold the 'VOLUME down' and press the 'CHANNEL down' for a few seconds, to switch from SDM to SAM and reverse. How to exit Switch the set to STANDBY by pressing the power button on the remote control transmitter (if you switch the set 'off' by removing the Mains voltage, the set will return in SDM when Mains voltage is re-applied). The error buffer is cleared. 5.2.2 Service Alignment Mode (SAM) Purpose · To perform alignments. · To change option settings.
1. LLLL This is the operation hours counter. It counts the normal operation hours, not the standby hours. 2. AAABCD-X.Y This is the software identification of the main micro controller · A = the project name (L01). · B = the region: E = Europe, A = Asia Pacific, U = NAFTA, L = LATAM. · C = the software diversity: D= DVD, F= full TXT, M= mono, T= 1 page TXT. · D = the language cluster number. · X = the main software version number. · Y = the sub software version number. 3. SAM Indication of the actual mode. 4. Error buffer Five errors possible. 5. Option bytes Seven codes possible. 6. Clear Erase the contents of the error buffer. Select the CLEAR menu item and press the CURSOR RIGHT key. The content of the error buffer is cleared. 7. Options To set the Option Bytes. See chapter 8.3.1 for a detailed description. 8. AKB Disable (0) or enable (1) the `black current loop' (AKB = Auto Kine Bias). 9. Tuner To align the Tuner. See chapter 8.3.2 for a detailed description. 10. White Tone To align the White Tone. See chapter 8.3.3 for a detailed description. 11. Geometry To align the Geometry. See chapter 8.3.4 for a detailed description. 12. Audio To align the Audio. See chapter 8.3.5 for a detailed description. How to navigate Use one of the following methods: · In SAM, select menu items with the CURSOR UP/DOWN key on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the CURSOR UP/DOWN key to display the next/previous menu items. · With the CURSOR LEFT/RIGHT keys, it is possible to:
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9. Value indicates parameter levels at CSM entry. VL= VOLUME LEVEL, BL= BALANCE LEVEL, AVL= AUTO VOLUME LEVEL LIMITER, DV= DELTA VOLUME 10. Value indicates parameter levels at CSM entry (only for stereo sets). TR= TREBLE, BS= BASS How to exit Use one of the following methods: · After you press `any' key of the remote control transmitter with exception of the CHANNEL and VOLUME keys. · After you switch-off the TV set with the Mains voltage switch.
·
·
(De)activate the selected menu item. Change the value of the selected menu item. Activate the selected submenu. When you press the MENU button twice, the set will switch to the normal user menus (with the SAM mode still active in the background). To return to the SAM menu press the OSD/STATUS button [ i+ ]. When you press the MENU key in a submenu, you will return to the previous menu.
How to exit Switch the set to STANDBY by pressing the power button on the remote control (if you switch the set 'off' by removing the Mains voltage, the set will return in SAM when Mains voltage is re-applied). The error buffer is not cleared. 5.2.3 Customer Service Mode (CSM) Purpose When a customer is having problems with his TV-set, he can call his dealer. The service technician can than ask the customer to activate the CSM, in order to identify the status of the set. Now, the service technician can judge the severness of the complaint. In many cases, he can advise the customer how to solve the problem, or he can decide if it is necessary to visit the customer. The CSM is a read only mode, therefore modifications in this mode are not possible. How to enter
5.3
5.3.1
Problems and Solving Tips (Related To CSM)
Picture Problems Note: Below described problems are all related to the TV settings. The procedures to change the value (or status) of the different settings are described. No colours/noise in picture Check CSM line 4. Wrong colour system installed. To change the setting: 1. Press the MENU button on the remote control. 2. Select the INSTALL sub menu. 3. Select the MANUAL STORE sub menu. 4. Select and change the SYSTEM setting until picture and sound are correct. 5. Select the STORE menu item. Colours not correct/unstable picture Check CSM line 4. Wrong colour system installed. To change the setting: 1. Press the MENU button on the remote control. 2. Select the INSTALL sub menu. 3. Select the MANUAL STORE sub menu. 4. Select and change the SYSTEM setting until picture and sound are correct. 5. Select the STORE menu item. TV switches `off' (or `on') or changes the channel without any user action (Sleep)timer switched the set `off' or changed channel. To change the setting: 1. Press the MENU button on the remote control. 2. Select the FEATURES sub menu. 3. Select the TIMER sub menu. 4. Select and change the SLEEP or TIME setting. Picture too dark or too bright Increase/decrease the BRIGHTNESS and/or the CONTRAST value when: · The picture improves after you have pressed the `Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new `Personal' preference value is automatically stored. White line around picture elements and text Decrease the SHARPNESS value when: · The picture improves after you have pressed the `Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new `Personal' preference value is automatically stored. Snowy picture Check CSM line 5. If this line indicates `Not Tuned', check the following: · No or bad antenna signal. Connect a proper antenna signal.
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Figure 5-5 The CSM will be turned on after pressing the MUTE key on the remote control transmitter and any of the control buttons on the TV for at least 4 seconds simultaneously. This activation only works if there is no menu on the screen. After switching ON the Customer Service Mode, the following screen will appear: 1. Software identification of the main micro controller (see paragraph 5.2.2 for an explanation). 2. Error code buffer (see paragraph 5.5 for more details). Displays the last seven errors of the error code buffer. 3. In this line, the Option Bytes (OP) are visible. Each Option Byte is displayed as a decimal number between 0 and 255. The set may not work correctly when an incorrect option code is set. See chapter 8.3.1 for more information on the option settings. 4. Indicates which colour and sound system is installed for the selected pre-set. 5. Indicates if the set is not receiving an `IDENT' signal on the selected source. It will display `Not Tuned'. 6. Indicates if the sleep timer is enabled. 7. Not applicable for Europe. 8. Value indicates parameter levels at CSM entry. CO= CONTRAST, CL= COLOR, BR= BRIGHTNESS, HU= HUE, SH= SHARPNESS
Service Modes, Error Codes and Fault Finding
· · Antenna not connected. Connect the antenna. No channel/pre-set is stored at this program number. Go to the INSTALL menu and store a proper channel at this program number. The tuner is faulty (in this case the CODES line will contain error number 10). Check the tuner and replace/ repair if necessary.
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Snowy picture and/or unstable picture · A scrambled or decoded signal is received. Black and white picture Increase the COLOR value when: · The picture improves after you have pressed the `Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new `Personal' preference value is automatically stored. Menu text not sharp enough Decrease the CONTRAST value when: · The picture improves after you have pressed the `Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new `Personal' preference value is automatically stored. 5.3.2 Sound Problems No sound or sound too loud (after channel change/ switching on) Increase/decrease the VOLUME level when the volume is OK after you switched on the CSM. The new `Personal' preference value is automatically stored.
The ComPair faultfinding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: · Automatic (by communication with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C level. ComPair can access the I2C bus of the television. ComPair can send and receive I2C commands to the micro controller of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I2C busses of the TV-set. · Manually (by asking questions to you): Automatic diagnosis is only possible if the micro controller of the television is working correctly and only to a certain extend. When this is not the case, ComPair will guide you through the faultfinding tree by asking you questions (e.g. Does the screen gives a picture? Click on the correct answer: YES/NO) and showing you examples (e.g. Measure test-point I7 and click on the correct oscillogram you see on the oscilloscope). You can answer by clicking on a link (e.g. text or a waveform picture) that will bring you to the next step in the faultfinding process. By a combination of automatic diagnostics and an interactive question/answer procedure, ComPair will enable you to find most problems in a fast and effective way. Beside fault finding, ComPair provides some additional features like: · Up- or downloading of pre-sets. · Managing of pre-set lists. · Emulation of the (European) Dealer Service Tool (DST). · If both ComPair and SearchMan (Electronic Service Manual) are installed, all the schematics and the PWBs of the set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Monocarrier.Click on the `Panel' hyperlink to automatically show the PWB with a highlighted capacitor C2568. Click on the `Schematic' hyperlink to automatically show the position of the highlighted capacitor. 5.4.3 How To Connect 1. First install the ComPair Browser software (see the Quick Reference Card for installation instructions). 2. Connect the RS232 interface cable between a free serial (COM) port of your PC and the PC connector (marked with `PC') of the ComPair interface. 3. Connect the Mains voltage adapter to the supply connector (marked with `POWER 9V DC') on the ComPair interface. 4. Switch the ComPair interface OFF. 5. Switch the television set OFF (remove the Mains voltage). 6. Connect the ComPair interface cable between the connector on the rear side of the ComPair interface (marked with `I2C') and the ComPair connector on the mono carrier (see figure 8-1 suffix D). 7. Plug the Mains voltage adapter in the Mains voltage outlet and switch on the interface. The green and red LEDs light up together. The red LED extinguishes after approx. 1 second while the green LED remains lit. 8. Start the ComPair program and read the `introduction' chapter.
5.4
5.4.1
ComPair
Introduction ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the European DST (service remote control), which allows faster and more accurate diagnostics. ComPair has three big advantages: · ComPair helps you to quickly get an understanding on how to repair the chassis in a short time by guiding you systematically through the repair procedures. · ComPair allows very detailed diagnostics (on I2C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2C commands yourself because ComPair takes care of this. · ComPair speeds up the repair time since it can automatically communicate with the chassis (when the microprocessor is working) and all repair information is directly available. When ComPair is installed together with the SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away.
5.4.2
Specifications ComPair consists of a Windows based faultfinding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In case of the L01 chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector (located on the Main panel, see also figure 8-1 suffix D).
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Service Modes, Error Codes and Fault Finding
5.5.1 How to Read the Error Buffer Use one of the following methods: · On screen via the SAM (only if you have a picture). Examples: ERROR: 0 0 0 0 0 : No errors detected ERROR: 6 0 0 0 0 : Error code 6 is the last and only detected error ERROR: 9 6 0 0 0 : Error code 6 was first detected and error code 9 is the last detected (newest) error · Via the blinking LED procedure (when you have no picture). See next paragraph. · Via ComPair. 5.5.2 How to Clear the Error Buffer The error code buffer is cleared in the following cases: · By activation of the CLEAR command in the SAM menu: · When you exit SDM/SAM with the STANDBY command on the remote control (when leaving SDM/SAM, by disconnecting the set from Mains voltage, the error buffer is not reset). · When you transmit the command DIAGNOSE-99-OK with ComPair. · If the content of the error buffer has not changed for 50 hours, it resets automatically. 5.5.3 Error Codes In case of non-intermittent faults, clear the error buffer before you begin the repair. These to ensure that old error codes are no longer present. If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error code and not the actual cause (e.g., a fault in the protection detection circuitry can also lead to a protection).
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Figure 5-6 5.4.4 How To Order ComPair order codes: · Starter kit ComPair + SearchMan software + ComPair interface (excluding transformer): 4822 727 21629 · ComPair interface (excluding transformer): 4822 727 21631 · Starter kit ComPair software (registration version): 4822 727 21634 · Starter kit SearchMan software: 4822 727 21635 · ComPair CD (update): 4822 727 21637 · SearchMan CD (update): 4822 727 21638 · ComPair interface cable: 3122 785 90004
5.5
Error Buffer
The error code buffer contains all detected errors since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is written at the left side and all other errors shift one position to the right.
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Service Modes, Error Codes and Fault Finding 5.6 The Blinking LED Procedure
Via this procedure, you can make the contents of the error buffer visible via the front LED. This is especially useful when there is no picture. When the SDM is entered, the LED will blink the contents of the error-buffer. Error-codes ³ 10 are shown as follows: a long blink of 750 ms (which is an indication of the decimal digit), a pause of 1.5 s, n short blinks (n = 1 - 9), when all the error-codes are displayed, the sequence finishes with a LED blink of 3 s., the sequence starts again. Example of error buffer: 12 9 6 0 0 After entering SDM: 1 long blink of 750 ms followed by a pause of 1.5 s, 2 short blinks followed by a pause of 3 s, 9 short blinks followed by a pause of 3 s, 6 short blinks followed by a pause of 3 s, 1 long blink of 3 s to finish the sequence, the sequence starts again. ·
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the same time, measure the `+8V'. If this voltage is missing, check transistor TS7480. Set is non-stop in hiccup mode Set is in over current mode; check the secondary sensing (opto coupler 7515) and the `MainSupply' voltage. Signal `Stdby_con' must be logic low under normal operation conditions and goes to high (3.3 V) under standby and fault conditions. Set turns on, but without picture and sound The screen shows snow, but OSD and other menus are okay. Blinking LED procedure indicates error 11, so problem is expected in the tuner (pos. 1000). Check presence of supply voltages. As `Vlotaux+5V' at pin 5 and 7 are okay, `VT_supply' at pin 9 is missing. Conclusion: resistor 3460 is defective. Set turns on, but with a half screen at the bottom. Sound is okay Blinking LED (set in SDM mode) indicates error 3. Check `Vlotaux+11V' and `+50V'. If they are okay, problem is expected in the vertical amplifier IC7471. Measure with a scope the waveform on pin 17 of the UOC. Measure also at pin 1 of IC7471. If here the signal is missing, a defective resistor R3244 causes the problem.
5.7
Protections
If a fault situation is detected an error code will be generated and if necessary, the set will be put in the protection mode. Blinking of the red LED at a frequency of 3 Hz indicates the protection mode. In some error cases, the microprocessor does not put the set in the protection mode. The error codes of the error buffer can be read via the service menu (SAM), the blinking LED procedure or via ComPair. The DST diagnose functionality will force the set into the Servicestandby, which is similar to the usual standby mode, however the microprocessor has to remain in normal operation completely. To get a quick diagnosis the chassis has three service modes implemented: · The Customer Service Mode (CSM). · The Service Default Mode (SDM). Start-up of the set in a predefined way. · The Service Alignment Mode (SAM). Adjustment of the set via a menu and with the help of test patterns. See for a detailed description Chapter 9 paragraphs Deflection and Power Supply.
5.8
Repair Tips
Below some failure symptoms are given, followed by a repair tip. · Set is dead and makes hiccuping sound `MainSupply' is available. Hiccuping stops when de-soldering L5561, meaning that problem is in the `MainSupply' line. No output voltages at LOT, no horizontal deflection. Reason: line transistor 7460 is defective. · Set is dead, and makes no sound Check power supply IC7520. Result: voltage at pins 1, 3, 4, 5 and 6 are about 180 V and pin 8 is 0 V. The reason why the voltage on these pins is so high is because the output driver (pin 6) has an open load. That is why MOSFET TS7521 is not able to switch. Reason: feedback resistor 3523 is defective. Caution: be careful measuring on the gate of TS7521; circuitry is very high ohmic and can easily be damaged! (first connect ground to measuring equipment, than the gate). · Set is in hiccup mode and shuts down after 8 s. Blinking LED (set in SDM mode) indicates error 5. As it is unlikely that mP `POR' and `+8V protection' happen at
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Personal Notes:
Block Diagram, Testpoints, I2C and Supply Voltage Overview
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6. Block Diagram, Testpoints, I2C and Supply Voltage Overview
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R2-OUT
A5 A10 A10
MONO/AM-MONO-SOUND 3834 2847 44 SC1-L IN SC1-R IN 41 42
DEMODULATOR NICAM, 2CS, AM, FM
24
A8
OR
MONO/AM-MONO-SOUND SC1-L OUT A10 2X SC1-R OUT A10 SC2-CTRL A10 L+
E1 HEADPHONE
0246 1 2 3 4 5 0254 1 2 3
RL+ L-
63
9641 9631
SDM
TELE TEXT 0255 4 3 2 1
CPU
64
1660 12MHz
C2
31
A5
RR+
L R
3 1
B L C
L B R C
L-FRONT-IN
INPUT SWITCHING
ERR 4
30 4 51
L
CVBS SYNC
R G B BL COR H V
SERVICE COMPAIR CONNECTION 0217 SDA 1 SCL 2 3
15
A14 A7
L2-OUT
SDA SCL
3833 3832
A7
8
A6
R-FRONT-IN
4 5
R+
12 13
14
A14
A7
7 52
1831 18M432
R
OSD TELETEXT DISPLAY
L-
A4 TUNER IF
A2 VT_SUPPLY
5001 VLOTAUX +5V 0265 1
FM
A5 VIDEO IF, SOUND IF 7209, 7210
6001 BZX79-C33 9 VT 2
ERR 10 I3 I4
FM
FM RADIO PRE-AMPLIFIER 7200-A TDA95XX
FMR 3214 49 VIDEO PLL DEMOD. VIDEO AMPLIFIER 38 +8V V1-OUT A14
V10
AUDIO CARRIER FILTERS QSS_AM_DEM_OUT 5201 +8V 1200
5.5MHz
3220 V-OUT A14 2X 7200-C TDA95XX
B
CRT
3316 3326 3317 3336
R
+160V
1000
6, 7
1002 1003
47 OSD
V11
VIF_1 VIF_2
18 19 22 VIDEO IF AGC
7311: 7313 V12 7321: 7323
3317
V14 V15
7 5 3
R G B
10 FM-RADIO FM TUNER + IF 11 TV TUNER AGC 1
7201 3208
1201
6MHz
3213
V9
2203
40
I/O SWITCHING
RGB MATRIX RGB INSERT BLACK STRETCH WHITE STRETCH 51 52 53 50
R G B
RGB CONTROL OSD TEXT INSERT BLUE STRETCH WHITE-P. ADJ 54 7204 EHT INFO PROC.
R 56 G 57 B 58
3201 3202 3203
V5 V6
0243 1 2
0245 1 2 3
G B
3327
TV
CRT
1004 SIF1 SIF2 RF_AGC 23 24 QSS SOUND IF + AGC QSS MIXER AM DEMOD. 33 Y-DELAY 7206 3230 SOUND FM-DEMOD. DE-EMPH. 28 L1-IN A14 A12 LF FRONT-IN SOUND AMPL. + AVL
5 3001
I1
4
Y
V7
3
V9
V13 3347
7331: 7333
A14 C-IN A10 SY-CVBS-IN A14 CVBS1-IN
45 44 42
VIDEO FILTERS VIDEO IDENT PAL/NTSC SECAM DECODER R-Y B-Y BASE BAND DELAY U V
3337 V16
A7 SDA
3000
I2
55
3204
4 BLK 5 6
4
BLKCURINFO
3235 5 6 BLK-IN
FILAMENT
ERR 11
3348 5341 25kV 3349 3350 V G2 V FOCUS
A7 SCL
7001 7002
AUDIO SWITCH 29
48
MONO/AM_ MONO_SOUND
A2
+160V
0244 6409 3416 VIDEOSUPPLY 0220 3 5445 2 1
A7 SEL-IF-LL-M-TRAP
EHT INFO A2
A1 POWER SUPPLY
Degaussing Coil 1 0231
0212 1 2
1 RP +t +t 2 +t
3504
R3 3
3503
3 2
4 1
1515
7580 ENERGIZING CIRCUIT VLOTAUX +13V 6562 5562 6564 3564 2564
3558 +3.9V 7560
P4
A6 SYNCHRONISATION
7200-D TDA95XX EHT INFO A2 SANDCASTLE 3259 2254 3242
S1
5241 9
+8V
A2 LINE DEFLECTION
VLOTAUX +13V
S2
M_AUX MAIN SUPPLY 95V
+3.3V 2567
P5
11 31 H-DRIVE 2nd LOOP H-SHIFT 30
3251
12V 3570 M_AUX MAIN AUX AUDIO SUPPLY GND
N.C.
H DRIVE
6406 BAV70
2 EHT 7 1
VLOTAUX +13V
A2
H FLYBK
A1 VDEF
3404 L3 5444 7402 BUT11APX LINE OUTPUT CIRCUIT 0221 1 7403 7404
L1 S3
0211
1500 T4E
5500 : 5502
6500 AC 6502
6501
P1
5520 1 10
150 - 250V SINGLE RANGE 90 - 276V FULL RANGE
6503
2503
2
7561, 7562 7564 9 POWER DOWN CIRCUIT 5560 6560 5563 2561 12 6561 VDEFL A2 7540, 6540 REFERENCE CIRCUIT
ERR 7
VIDEO IDENT POWER DOWN A6
TXT/OSD DISPLAY
3425
ERR 2
7401
DRIVER STAGE
L2
FOCUS 2 HOR. DEFL. COIL 5 6402 8
VG2
3431 EHT INFO A5 A6
MAINS SWITCH
7520 TEA1507
DRAIN
3527 8 6 5 4 1 3523 3525 3522 3531
P2
7521 STP7NB60FP D
G S
A7
P6
3 13 5
DRIVE R SENSE CTRL DEMAG VCC
5561
7241
95V MAIN SUPPLY
A1
POWER-DOWN
H H/V SYNC SEPARATOR V H-OSC +PLL
17 V-DRIVE + GEOMETRY
S4
3244 3249
V DRIVE+ V DRIVE-
16
L4
VLOTAUX +13V 2422
3
3526 6 6520 2521 N.C. 3519
P3
3543
A2 A2
EHT INFO EHT o
3247
34
EW + GEOMETRY
S5
15
3250 N.C.
4 N.C.
A6 HFLYBK
3421 3 10
L5
7407 2410
7 3
VLOTAUX +5V
CONTROL IC
3544 1 7515 TCET1103 4 2 COLD GROUND 7541, 7542 STANDBY CIRCUIT STDBY_CON
ERROR CODE LIST
A7
Error 0 1 2 3 4 5 6 7 8 9 10 11 Description No error X-Ray / over voltage protection (USA only) High beam (BCI) protection Vertical guard protection I2C error while communicating with the sound processor Power ON reset (POR bit) 3.3V protection / +8V protection General I2C error Power Down (over current) protection EW protection (Large Screen only) I2C error EEPROM error I2C error PLL tuner Black current loop instability protection
9 6
6410
3422 7408
L6
+8V
HOT GROUND
3423 FILAMENT
A3
FRAME DEFLECTION
6405
L7
VLOT AUX +13V 6471 F1 7471 TDA9302H 7 1 3479 F2 3475 4 -13V 2 6
FLYBACK GENERATOR
F5 2473 3
ERR 3
-13V
V_GUARD
2417
A2
6423 3428 3427
L8
VT_SUPPLY A4 7406, 7409
VDRIVE+ VDRIVE-
3474
+
F3
-
OP. AMP THERMAL PROTECTION
5
F4
3471
0222 1 2
3413 6413 3411 2419 3412
PROT CIRCUIT 7405
VGUARD A3 BLK-IN A5
3471
VERT. DEFL. COIL
PROT CIRCUIT
ERR 2
EHT o A6
CL 16532008_034.eps 300501
EHT
FILTER SELECTION
A8 A9
A14 A14 A14 A14
R-V-IN G-Y-IN B-U-IN FBL-1
Block Diagram, Testpoints, I2C and Supply Voltage Overview
L01.2E
6.
18
Testpoint Overview
Main Panel Copper Track Side
AUDIO OUTPUT 7901 OR 7902
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 C1 C2 C3 C4 C5 C6 F1 F2 F3 F4 I1 I2 I3 I4 L1 L2 L3 L4 L6 L8 L9 P1 P2 P3 P4 P5 P6 S1 S2 S3 S4 S5 V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 B3 B3 A3 A3 C1 B1 B1 C2 B2 B3 C2 B2 C3 B4 B4 B5 B5 B5 E1 D6 D6 C6 C6 A6 A6 A6 A6 C4 E5 E5 D5 C5 C6 D5 E3 E3 D3 C4 C4 D5 A4 A4 A5 A5 A4 B6 B6 B5 B4 B4 B4 B4 B4 A4 A4
L9
V7
7200
TV-PROC.
2V / div DC 20us / div P1
1V / div DC 20us / div V8
1
NICAM + 2CS + BTSC
7831
50V / div DC 20us / div P3
2V / div DC 5ms / div V9
5V / div DC 50ms / div S1
500mV / div DC 10us / div V10
2V / div DC 20us / div S2
1V / div DC 500us / div V11
7
7471
1
4
1
7520 7521
8 5 D G
FRAME
S
SUPPLY CONTROL
500mV / div DC 20us / div S3
1V / div DC 20us / div V12
7402
E C B
SUPPLY
LINE
500mV / div DC 5ms / div S4
1V / div DC 20us / div V13
HOT GROUND
A1
A11
F1
F4
I2
L1
500mV / div DC 5ms / div V4
1V / div DC 20us / div V14
CRT Panel Copper Track Side
4 3
5 6 7
2V / div DC 5us / div A2
1V / div DC 500us / div C1
500mV / div DC 5ms / div F2
1V / div DC 5ms / div F5
2V / div DC 200us / div I3
500mV / div DC 20us / div L2
100mV / div DC 20us / div V5
50V / div DC 20us / div V15
2 9
8 5 6 12 11 10 9 8 7
2V / div DC 500us / div A3
1V / div DC 500us / div C2
500mV / div DC 5ms / div F3
10V / div DC 5ms / div I1
20mV / div DC 1ms / div I4
2V / div DC 20us / div L4 = +13V L5 = +5V L6 = +8V L7 = -13V L8 = +34V L10 = +176V
1V / div DC 20us / div V6
50V / div DC 20us / div V16
2V / div DC 500us / div
1V / div DC 500us / div
10V / div DC 5ms / div
2V / div DC 200us / div
500mV / div DC 250ns / div
1V / div DC 20us / div
50V / div DC 20us / div
CL 16532008_033.eps 050601
Block Diagram, Testpoints, I2C and Supply Voltage Overview
L01.2E
6.
19
I2C and Supply Voltage Diagram
A1 POWER SUPPLY
6560 5560
6500 AC 6502 6503 6501 P1
A2 LINE DEFLECTION
5445
P6
B
LOT
EHT FOCUS VG2
CRT
ANODE CRT FOCUS CRT VG2 CRT VIDEO OUTPUTS 3336 C-7332 3326 C-7322
0211
0231
1500 T4E
5500 : 5502
6561
5563 2561
5561
95V MAIN SUPPLY
MAIN SUPPLY
3487 5451 2
EHT FOCUS VG2
5520 1 13 12 10 9 5
5562 6564 6562 3564 2564 7561, 7562 7564 POWER DOWN CIRCUIT
2450
A
A8
P5
AUDIO AMPL.
7901
OR
M_AUX VLOT AUX +13V 6467 6406
7 9
6409
VIDEO 3416 SUPPLY
0220 3
0244 3 2 1
160V 5341 3349
3316 C-7312 TO CR