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Philips L01.1A Service Manual

Colour television
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Colour Television
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, I
Voltage Overview
Block Diagram
Testpoint Overview
2
I
C And Supply Voltage Overview
7. Electrical Diagrams and PWB's
Power Supply
Diversity Table Power Supply
Line Deflection
Frame Deflection
Tuner IF
Video IF and Sound IF
Synchronization
Control
Audio Amplifier
NICAM (Stereo/SAP) Decoder (Diagram A9)
Audio/Video Source Switching (Diagram A10) 40
Front I/O + Control, Headphone(Diagram A12) 41
Rear I/O Cinch
Tilt and Rotation
CRT
ECO SCAVEM
Side AV and Headphone
Side AV
Side AV and Headphone
Front Interface & Control Panel (Diagram Q)
Front Interface
©
Copyright 2002 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.
Published by RB 0267 Service PaCE
Page
2
4
5
19
21
2
C And Supply
27
28
29
Diagram PWB
(Diagram A1)
30
44-50
31
(Diagram A2)
32
44-50
(Diagram A3)
33
44-50
(Diagram A4)
34
44-50
(Diagram A5)
35
44-50
(Diagram A6)
36
44-50
(Diagram A7)
37
44-50
(Diagram A8)
38
44-50
39
44-50
44-50
44-50
(Diagram A13) 42
44-50
(Diagram A15) 43
44-50
(Diagram B1)
51
53
(Diagram B2)
52
53
(Diagram C)
54
54
(Diagram E)
55
55
(Diagram E1)
56
56
57
58
(Diagram Q1)
59
59
Printed in the Netherlands
(LARGE SCREEN)
Contents
Top Control (RF)
Top Control (FSQ)
Top Control
8. Alignments
9. Circuit Description
List of Abbreviations
10 Spare Parts List
Subject to modification
Chassis
L01.1A
AB
CL 16532008_066.eps
150601
Page
(Diagram T)
60
60
(Diagram T1) 60
60
(Diagram T2) 61
61
63
70
80
82
EN 3122 785 12730

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Summary of Contents for Philips L01.1A

  • Page 1 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. Published by RB 0267 Service PaCE...
  • Page 2 EN 2 L01.1A Technical Specifications, Connections and Chassis Overview 1. Technical Specifications, Connections and Chassis Overview Index: : NICAM B/G, D, D/K, I 1. Technical Specifications. : BI-NICAM B/G, D, D/ 2. Connections. K, I 3. Chassis Overview. A/V connections : NTSC 3.58, 4.43...
  • Page 3 Technical Specifications, Connections and Chassis Overview L01.1A EN 3 Audio / Video In 3 - Audio R (0.5 Vrms / 1 kΩ) CVBS (1 Vpp / 75 Ω) 1 - Video 2 - Audio L (0.2 Vrms / 10 kΩ)
  • Page 4 EN 4 L01.1A Safety & Maintenance Instructions, Warnings, and Notes 2. Safety & Maintenance Instructions, Warnings, and Notes Safety Instructions For Repairs Warnings Safety regulations require that during a repair: • In order to prevent damage to ICs and transistors, avoid all •...
  • Page 5 Directions for Use L01.1A EN 5 3. Directions for Use...
  • Page 6 EN 6 L01.1A Directions for Use...
  • Page 7 Directions for Use L01.1A EN 7...
  • Page 8 EN 8 L01.1A Directions for Use...
  • Page 9 Directions for Use L01.1A EN 9...
  • Page 10 EN 10 L01.1A Directions for Use...
  • Page 11 Directions for Use L01.1A EN 11...
  • Page 12 EN 12 L01.1A Directions for Use...
  • Page 13 Directions for Use L01.1A EN 13...
  • Page 14 EN 14 L01.1A Directions for Use...
  • Page 15 Directions for Use L01.1A EN 15...
  • Page 16 EN 16 L01.1A Directions for Use ➩...
  • Page 17 Directions for Use L01.1A EN 17...
  • Page 18 EN 18 L01.1A Directions for Use...
  • Page 19 Mechanical Instructions L01.1A EN 19 4. Mechanical Instructions Index: Main panel with bracket. 1. Rear Cover Removal 1. Disconnect the strain relief of the AC power cord. 2. Service Position Main Panel 2. Disconnect the degaussing coil by removing the cable from 3.
  • Page 20 EN 20 L01.1A Mechanical Instructions Side I/O Panel Removal 1. Remove the complete Side I/O assembly after unscrewing the two fixation screws [1]. 2. Release the 2 fixation clamps [2] and lift the board out of the bracket. CL 06532012_004.eps...
  • Page 21 Service Modes, Error Codes and Fault Finding L01.1A EN 21 5. Service Modes, Error Codes and Fault Finding Index: • To override SW protections. 1. Test points. • To start the blinking LED procedure. 2. Service Modes. 3. Problems and Solving Tips (related to CSM).
  • Page 22 EN 22 L01.1A Service Modes, Error Codes and Fault Finding 5.2.2 Service Alignment Mode (SAM) After entering SDM, the following screen is visible, with SDM at the upper right side for recognition. Purpose • To perform alignments. • To change option settings.
  • Page 23 Service Modes, Error Codes and Fault Finding L01.1A EN 23 • In SAM, select menu items with the CURSOR UP/DOWN 6. Indicates if the sleep timer is enabled. key on the remote control transmitter. The selected item 7. Indicates if the V-chip feature is enabled.
  • Page 24 5.4.1 Introduction 5.4.3 How to Connect ComPair (Computer Aided Repair) is a service tool for Philips 1. First install the ComPair Browser software (see the Quick Consumer Electronics products. ComPair is a further Reference Card for installation instructions). development on the European DST (service remote control), 2.
  • Page 25 Service Modes, Error Codes and Fault Finding L01.1A EN 25 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 –...
  • Page 26 EN 26 L01.1A Service Modes, Error Codes and Fault Finding 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.
  • Page 27 Block Diagram, Testpoints, I2C And Supply Voltage Overview L01.1A 6. Block Diagram, Testpoints, I C And Supply Voltage Overview Block Diagram REAR I/O CINCH AUDIO/VIDEO AUDIO AMPLIFIER CONTROL +3.3V +3.3V SOURCE SWITCHING FOR MONO SETS MONO/ FRONT CONTROL 7943 CVBS1-IN...
  • Page 28 Block Diagram, Testpoints, I2C And Supply Voltage Overview L01.1A Testpoint Overview Main Panel Copper Track side AUDIO OUTPUT 7901 OR 7902 1V / div DC 500mV / div DC 1V / div DC TV-PROC. 20us / div 5ms / div...
  • Page 29 Block Diagram, Testpoints, I2C And Supply Voltage Overview L01.1A I2C And Supply Voltage Diagram POWER SUPPLY LINE DEFLECTION 5445 ANODE CRT FOCUS FOCUS 5500 : 6500 6560 FOCUS CRT 5560 5564 5561 MAIN SUPPLY 3487 0231 5451 0211 5502 GBU6J...
  • Page 30 Schematics and PWB‘s L01.1A 7. Schematics and PWB‘s Mono Carrier: Power Supply 0211 C1 3595 E10 0212 A1 3596 E10 0213 B5 4500 C10 POWER SUPPLY 0231 C1 5500 C4 VlotAux+13V 0251 E11 5501 C3 2581 For AV Video 0282 F11...
  • Page 31 Schematics and PWB‘s L01.1A Mono Carrier: Diversity Table A1 DIVERSITY TABLE FOR POWER SUPPLY SNDAMP- SNDAMP- SNDAMP- SNDAMP- SNDAMP- SNDAMP- SNDAMP- SNDAMP- SNDAMP- ITEM 1x1W-MN- 2x1W-ST- 1x3W- 2x10W-ST- 2x3W-ST- 2x5W-ST- 2x5W-ST- 2x5W-ST- 2x1W-NA 2x5W-LA EU/AP NA/LA EU/AP IND-MKII SNDAMP- 2566...
  • Page 32 Schematics and PWB‘s L01.1A Mono Carrier: Line Deflection 0220 A2 3465 A10 0221 B6 3468 E2 0288 F6 3469 B9 0289 A9 3481 C8 LINE DEFLECTION 0319 B2 3482 C9 9453 9451 0321 D8 3483 B10 0322 G5 3484 C9...
  • Page 33 Schematics and PWB‘s L01.1A Mono Carrier: Frame Deflection 0222 D8 2471 B5 2472 D6 2473 C7 FRAME DEFLECTION 2474 D3 2475 E3 2476 C7 3470 C6 3471 E7 3472 E7 3473 E7 3474 D4 3475 E4 3477 D7 3478 D7...
  • Page 34 Schematics and PWB‘s L01.1A Mono Carrier: Tuner IF 0265 A4 0283 C2 0285 B2 1000 B3 TUNER IF 1002 D7 1003 E7 For Europe Only 1004 F7 FM-RADIO ANTENNA 2001 D3 0265 2002 D4 VlotAux+5V VT_Supply 2003 D5 2004 B5...
  • Page 35 Schematics and PWB‘s L01.1A Mono Carrier: Video IF + Sound IF 0243 C6 4209 D9 0248 C2 4210 B8 0249 B2 4211 B8 0266 E11 4212 B2 VIDEO IF + SOUND IF 0276 C2 4213 A2 0297 D6 4214 D10...
  • Page 36 Schematics and PWB‘s L01.1A Mono Carrier: Synchronisation 2241 D5 2242 D4 2243 B5 2244 D5 SYNCHRONISATION 2245 D6 2246 D7 2247 B7 2248 B7 2249 B4 2250 B4 2252 C7 9241 2253 C7 5241 2254 A4 2255 B3 3254 2254...
  • Page 37 Schematics and PWB‘s L01.1A Mono Carrier: Control 0217 F2 0240 A3 0250 A1 0261 D2 CONTROL 0273 B4 0274 A8 FOR PIP FOR ITV ONLY 0279 C3 3611 +3.3V 0304 G2 100R DATA-OUT +3.3V 0316 D3 7602 0317 D1 5602...
  • Page 38 Schematics and PWB‘s L01.1A Mono Carrier: Audio Amplifier 0246 B10 0267 G2 0271 C2 0275 B4 AUDIO_AMPLIFIER 0280 D10 0281 C10 2901 B7 2902 B7 2903 B5 2904 B4 2905 C5 3911 2906 C4 1V / div DC 1V / div DC...
  • Page 39 Schematics and PWB‘s L01.1A Mono Carrier: NICAM + 2CS + BTSC (Stereo / SAP) Decoder) 0239 F10 1831 C8 2831 C8 2832 C8 NICAM + 2CS + BTSC (STEREO/SAP) DECODER 2833 D4 2834 B3 2843 2835 B3 2836 B4 2837 B4...
  • Page 40 Schematics and PWB‘s L01.1A Mono Carrier: Audio / Video Source Switching 0296 B5 2801 B4 2802 E4 Diversity Table 2803 C2 AUDIO/VIDEO SOURCE SWITCHING 2x Rear Video In 2x Rear Video In 1x Rear Video In 2804 C5 ITEM With Side Video In...
  • Page 41 Schematics and PWB‘s L01.1A Mono Carrier: Front I/O + Front Control + Headphone 0214 E9 0215 C4 0218-A C2 0218-B B2 FRONT IO + FRONT CONTROL + HEADPHONE 0218-C B2 0219 C4 0232 E5 0259 E10 0270 A5 0277-A B1...
  • Page 42 Schematics and PWB‘s L01.1A Mono Carrier: Rear I/O Cinch 0223-A A10 3153 D5 0223-B F2 3154 D1 0223-C C2 3156 D1 0223-D A2 3157 E1 REAR I/O CINCH 0225-A D10 3158 D2 SET WITH VIDEO OUT 0225-B D9 3159 E1...
  • Page 43 Schematics and PWB‘s L01.1A Mono Carrier: Tilt and Rotation 0268 C8 0290 F5 0291 F8 2171 C4 TILT & ROTATION 2172 C5 2174 F7 2175 F7 3171 C5 3173 C4 3174 C5 3176 F6 5180 F6 6171 F7 7000 B6...
  • Page 44 Schematics and PWB‘s L01.1A Layout Mono Carrier ( Overview Top Side) CL 26532046_084.eps 210602...
  • Page 45 Schematics and PWB‘s L01.1A Layout Mono Carrier (Mapping Top Side) Layout Mono Carrier (Mapping Bottom Side) 0211 A2 1410 A6 2489 C7 3185 C1 3505 D2 5472 B8 7560 C3 9512 C4 9678 C7 2001 2260 2898 3441 3810 4696...
  • Page 46 Schematics and PWB‘s L01.1A Layout Mono Carrier (Overview Bottom Side) Part 1 CL 26532046_83a.eps Part 2 CL 26532046_83b.eps Part 3 Part 4 CL 26532046_83c.eps CL 26532046_83d.eps CL 26532046_083.eps 210602...
  • Page 47 Schematics and PWB‘s L01.1A Layout Mono Carrier (Bottom Side) Part 1 CL 26532046_83a.eps 210602...
  • Page 48 Schematics and PWB‘s L01.1A Layout Mono Carrier (Bottom Side) Part 2 CL 26532046_83b.eps 210602...
  • Page 49 Schematics and PWB‘s L01.1A Layout Mono Carrier (Bottom Side) Part 3 CL 26532046_83c.eps 210602...
  • Page 50 Schematics and PWB‘s L01.1A Layout Mono Carrier (Bottom Side) Part 4 CL 26532046_83d.eps 210602...
  • Page 51 Schematics and PWB‘s L01.1A CRT Panel VG2 F9 0165 A7 0244 E1 0245 D1 CRT PANEL 0254-A B7 0255 B6 0256-A B6 AQUADAG 1345 D6 0165 WIRE 1346 D6 2330 B3 2340 E3 +200VA 2341 C5 2342 C4 CRT Sockets...
  • Page 52 Schematics and PWB‘s L01.1A CRT Panel: ECO SCAVEM 0278 D9 2360 C3 2362 D3 2364 E3 ECO SCAVEM 2365 E3 2366 E3 2367 C5 2368 C6 2369 D5 2372 B5 2373 B7 2375 C6 2378 D8 2379 D9 2380 E6...
  • Page 53 Schematics and PWB‘s L01.1A Layout CRT Panel (Top View) Layout CRT Panel (Bottom View)
  • Page 54 Schematics and PWB‘s L01.1A Side AV + HP Panel Layout Side AV + HP Panel (Top View) 0232 E5 0250-A C2 0250-B D2 0250-C B2 SIDE AV + HP PANEL 0251 A5 0254 E2 0255 E5 0277-A B1 0277-B D1...
  • Page 55 Schematics and PWB‘s L01.1A Side AV Panel Layout Side AV Panel (Top View) 0250-A B1 0250-B C1 SIDE AV 0250-C A1 0251 B4 0252 B1 0253 A4 0261 D4 0253 1152 A2 1153 C2 1154 B2 2171 C3 2172 B3...
  • Page 56 Schematics and PWB‘s L01.1A Side AV Panel + Headphone Layout Side AV Panel + Headphone (Top View) 0232 D4 0250-A B2 SIDE AV PANEL & HEADPHONE 0250-B C2 0250-C A2 0251 B5 0252 B2 0253 A5 0254 D2 0255 D5...
  • Page 57 Schematics and PWB‘s L01.1A Front Interface & Control Panel 0211 B3 0212 B5 0214 E2 0218 D2 0231 B4 0232 D9 0254 D7 (AP) FRONT INTERFACE + CONTROL PANEL 0255 D9 1600 G5 1601 F4 1602 F4 1603 F4 1606 F3...
  • Page 58 Schematics and PWB‘s L01.1A Layout Front Interface & Control Panel (Top View) CL 16532020_104.eps 240801...
  • Page 59 Schematics and PWB‘s L01.1A Front Interface Panel Layout Front Interface Panel (Top View) 0211 B3 0212 B5 0214 D3 FRONT INTERFACE PANEL 0218 D3 0231 B4 1606 E4 2691 E5 2698 E5 3500 C3 3501 C3 3685 E4 3691 E4...
  • Page 60 Schematics and PWB‘s L01.1A Top Control Panel (RF) Top Control Panel (FSQ) 0215 A1 0215 A1 1091 B2 1091 B2 1092 B3 1092 B3 TOP CONTROL PANEL (FSQ) TOP CONTROL PANEL (RF) 1093 B3 1093 B3 1094 C3 1094 C3...
  • Page 61 Schematics and PWB‘s L01.1A Top Control Panel Layout Top Control Panel (Top View) Layout Top Control Panel (Bottom View) 0215 A1 1093 B4 2010 B1 3088 C3 3091 A2 3094 B3 3097 C3 4090 C2 4093 A3 6092 B4 1091 B2...
  • Page 62 Schematics and PWB‘s L01.1A Personal Notes: Personal Notes:...
  • Page 63 Alignments L01.1A EN 63 8. Alignments Index: 3. Set the values of NORMAL RED, GREEN and BLUE to 40. 1. General Alignment Conditions 4. Go, via the MENU key, to the normal user menu and set 2. Hardware Alignments –...
  • Page 64 EN 64 L01.1A Alignments 5. AUDIO Typenumber OB1 OB2 OB3 OB4 OB5 OB6 OB7 21PT2251/74R 160 215 193 164 242 144 44 8.3.1 Options 21PT2251/97R 160 215 193 162 242 144 36 21PT2252/56A 160 247 193 164 242 144 44...
  • Page 65 Option Byte 5 (OB5) OP17: PHILIPS_TUNER – OP50: PIP 0 : ALPS/MASCO compatible tuner is in use, – OP51: HOTEL_MODE 1 : Philips compatible tuner is in use, – OP52: SVHS Default setting : 0. – OP53: CVI – OP54: AV3 OP20: HUE –...
  • Page 66 EN 66 L01.1A Alignments OP25: CHANNEL_NAMING 0 : Name FM Channel is disabled or not applicable, OP42: STEREO_PB 1 : Name FM Channel is enabled, 0 : For AP_PAL, chip MSP3465 is not present, Default setting : 0. 1 : For AP_PAL, chip MSP3465 is present, Note: Name FM channel can be enabled only when Default setting : 0.
  • Page 67 Alignments L01.1A EN 67 Default setting : 0. 011 : BG/I/DK 100 : BG/I/DK/M OP61: SMART_TEXT Default setting : 00 0 : Smart Text Mode and Favourite Page are disabled or not applicable, OP73: COLOR_SYSTEM_AP 1 : Smart Text Mode and Favourite Page are enabled, This option bit is allocated for AP-PAL colour system selection.
  • Page 68 EN 68 L01.1A Alignments YD (Y-delay) Always set to 8. VERT. SLOPE CL (cathode drive level) Always set to 7. VERT. SHIFT Read only bit, for monitoring purpose only. VERT. AMPLITUDE Read only bit, for monitoring purpose only. 8.3.3 White Tone V.S-CORRECTION...
  • Page 69 Alignments L01.1A EN 69 • East West Trapezium (EWT) Align straight vertical lines in In the table below, you will find the GEOMETRY default values the middle of the screen. for the different sets. '()$8/7 *(20(75< 9$/8(6 / /DUJH 6FUHHQ $3 ...
  • Page 70 EN 70 L01.1A Circuit Description 9. Circuit Description Index: 1. Introduction The L01 is divided into 2 basic systems, i.e. mono and stereo 2. Audio Signal Processing sound. While the audio processing for the mono sound is done 3. Video Signal Processing in the audio block of the UOC, an external audio processing IC 4.
  • Page 71 Circuit Description L01.1A EN 71 9.2.2 Mono 9.3.3 Video Source Selection In mono sets, the signal goes via the SAW filter (position 1004 The Composite Video Blanking Signal (CVBS) from buffer in case of QSS demodulation and 1003 in case of Intercarrier...
  • Page 72 EN 72 L01.1A Circuit Description 3 V), the RGB signals at pins 51, 52 and 53 are inserted into voltage on pin 54 is lower than 2.8 V. Brightness reduction the picture by using the internal switches. starts when the voltage on pin 54 is less than 1.7 V. The Also some picture improvement features are implemented in voltage on pin 54 is normally 3.3 V (limiter not active).
  • Page 73 Circuit Description L01.1A EN 73 Deflection R3475 convert them to voltage. The differential input voltage is compared with the voltage across measuring resistor R3471 that provides internal feedback information. The voltage across 9.5.1 Horizontal Drive this measuring resistor is proportional to the output current,...
  • Page 74 EN 74 L01.1A Circuit Description A line, written at the upper- or lower side of the screen, will be larger at the screen centre when a fixed deflection current is SUPPLY START-UP used. Therefore, the amplitude of the deflection current must...
  • Page 75 Circuit Description L01.1A EN 75 Degaussing Control Circuit B1/B2 n⋅V Main Supply Focus Mains AC Input Main Power Panel VideoSupply Supply Main Aux Filament Tilt& Rotation GATE Degaussing Circuit VlotAux +13V 3V3 Reg. Correction Horizontal GATE Vaux Deflection +3.9V +3.3V...
  • Page 76 EN 76 L01.1A Circuit Description The moment that the voltage on pin 1 drops below the ‘under voltage lock out‘ level (UVLO = ± 9 V), the IC will stop switching and will enter a safe restart from the rectified mains voltage.
  • Page 77 Circuit Description L01.1A EN 77 In Standby, the power supply works in ‘burst mode’. Burst mode can be used to reduce the power consumption Active/ below 1 W at stand-by. During this mode, the controller is active inactive (generating gate pulses) for only a short time and for a longer time inactive waiting for the next burst cycle.
  • Page 78 EN 78 L01.1A Circuit Description Over Power Protection 9.7.1 Introduction During the primary stroke, the rectified AC input voltage is measured by sensing the current drawn from pin 4 (DEM). This The microprocessor part of the UOC, has the complete control current is dependent on the voltage on pin 9 of transformer and teletext on board.
  • Page 79 Circuit Description L01.1A EN 79 • SEL-MAIN-FRNT-RR This is the source select control signal from the microprocessor. This control line is under In case one of these protections is activated, the set will go into user control or can be activated by the other two control ‘standby’.
  • Page 80 EN 80 L01.1A Circuit Description Abbreviation list Headphone Colour phase control for NTSC (not the same as ‘Tint’) 2 Carrier (or Channel) Stereo Monochrome TV system. Sound Automatic Channel Installation: carrier distance is 6.0 MHz algorithm that installs TV sets directly...
  • Page 81 Circuit Description L01.1A EN 81 Service Default Mode SECAM SEequence Couleur Avec Memoire. Colour system mainly used in France and East Europe. Colour carriers = 4.406250 MHz and 4.250000 MHz Sound Intermediate Frequency Small Screen STBY Standby SVHS Super Video Home System...
  • Page 82 EN 82 L01.1A Spare Parts List 10. Spare Parts List Mono Carrier [A] + CRT Panel [B] 2213 5322 122 32654 22nF 1% 63V 2581 4822 124 81151 22µF 50V 2214 5322 122 32654 22nF 1% 63V 2601 4822 126 14076 220nF 25V...
  • Page 83 Spare Parts List L01.1A EN 83 3132 4822 117 10834 47kΩ 1% 0.1W 3465 4822 050 28203 82kΩ 1% 0.6W 3806 4822 117 10837 100kΩ 1% 0.1W 3133 4822 116 83868 150Ω 5% 0.5W 3469 4822 116 52269 3.3kΩ 5% 0.5W 3807 4822 117 11149 82kΩ...
  • Page 84 EN 84 L01.1A Spare Parts List 6476 4822 130 34281 BZX79-B15 2173 5322 122 32311 470pF 10% 100V 6481 4822 130 34173 BZX79-B5V6 2174 5322 122 32311 470pF 10% 100V 6482 4822 130 30862 BZX79-B9V1 2176 5322 122 32311 470pF 10% 100V...

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