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L01.2L
Service Manual
68 pgs12.41 Mb0

Philips L01.2L, L01.2A Service Manual

Colour television Chassis
L01.2L
AB 02.01
Service Information
Introduction
In the manuals L01.2L AB (3122 785 12710 ES & 3122 785 12720 PT) and L01.2A AB (3122 785 12750) the wrong PWB mapping information was published. Therefore in this Service Information, the corrected PWB bottom overview and mapping are given. You can replace these pages in the original manuals.
Contents
• PWB bottom overview and mapping L01.2L AB
• PWB bottom overview and mapping L01.2A AB
Service Information
Introdução
Nos manuais L01.2L AB (3122 785 12720) e L01.2A AB (3122 785
12750) foi publicada uma informação errada do mapeamento do PWB. Por isso neste Service Information segue a vista inferior e mapeamento do PWB corrigidos. Você deve substituir estas páginas no manual original.
Conteúdo
• Vista inferior e mapeamente da PWB L01.2L AB
• Vista inferior e mapeamente da PWB L01.2A AB
Información de Service
Introducción
En los manuales L01.2L AB (3122 785 12710 ES & 3122 785 12720 PT) y L01.2A AB (3122 785 12750) la vista general y la distribución de componentes en la placa fueron publicadas en forma equivocada. Por lo tanto en esta Información de Service, se dan las versiones corregidas de la Vista inferior de la Placa Impresa, como así también la ubicación de los componentes. Usted puede reemplazar estas páginas en los manuales originales.
Contenidos
• Vista inferior de la placa y ubicación de componentes L01.2L AB
• Vista inferior de la placa y ubicación de componentes L01.2A AB
©
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 0271 Service PaCE Printed in the Netherlands Subject to modification 3122 785 40730
EN 2 L01.2 AB 02.01
Personal Notes:
Schematics and PWB’s
Layout Mono Carrier (Overview Bottom Side)
Part 1
CL 26532046_63a.eps
Part 3
CL 26532046_63c.eps
29L01.2L AB 7.
2001 A6
2893 C3
3684 B1 3685 C2 3686 B1 3687 C1 3688 C1 3689 C2 3691 E1 3692 E1 3693 E1 3694 E1 3695 C2 3861 C2 3862 C2 3863 C2 3864 C2 3867 C2 3891 B3 3893 C3 3894 B3 3896 C3 3901 B3 3902 B3 3903 A3 3904 A3 3905 A3 3906 A3 3907 A3 3921 A3 3922 A3 3923 A3 3941 A3 3942 A3 3943 A3 3944 A3 3945 A3 3946 A3 3947 A3 3948 A3 3949 A3 3950 A3 3951 A3 4001 A5 4002 A5 4003 A5 4004 A5 4005 A5 4006 A5 4011 A5 4012 A5 4101 B6 4102 B6 4104 B6 4121 B6 4131 C6 4181 B5 4203 A4 4204 A4 4205 B4 4206 B4 4207 B4 4209 A4 4210 A4 4211 A4 4212 A4 4213 A4 4214 B3 4216 A6 4217 A3 4410 C5 4411 C4 4501 D4 4562 D4 4601 B5 4602 B5 4603 B4 4604 A3 4608 A7 4609 A7 4613 B4 4614 A3 4615 B5 4616 B4 4617 A5 4618 A3 4619 A4 4622 A5 4623 A5 4691 E1 4692 C2 4693 C2 4694 B1 4695 E1 4696 C1 4861 B3 4862 B3 4863 B2 4864 B3 4865 B3 4866 C3 4901 A3 4902 A3 4903 A3 4904 A3 4911 A3 4921 B3 4941 A3 4982 E1 5003 A4 6002 A6 6003 A6 6004 A5 6005 A5 6181 D1 6201 B4 6202 B4 6206 B4 6241 C4 6406 C4 6407 C4 6408 C5 6415 C5 6416 D5 6417 C5 6418 C4 6522 D3 6563 D4 6565 C4 6566 C3 6567 D4
6569 D4 6570 C3 6580 C2 6581 C2 6601 B4 6901 B3 7001 A5 7002 A5 7101 B6 7200 A4 7201 A4 7202 A4 7203 A4 7204 B4 7205 A4 7206 A4 7208 A4 7209 A6 7210 A6 7241 B4 7401 C4 7405 D5 7406 C5 7409 C5 7522 D3 7541 C3 7542 C3 7561 C4 7562 D4 7564 D4 7580 C2 7606 B5 7861 C2 7891 B3 7892 B3 7941 A3 7942 A3 7943 A3
Part 2
CL 26532046_63b.eps
Part 4
CL 26532046_63d.eps
CL 26532046_063.eps
221002
2002 A6 2003 A5 2004 A6 2007 A6 2009 A5 2010 A6 2101 B6 2102 B6 2103 B6 2104 B6 2107 B7 2108 B7 2111 B6 2112 B6 2113 B6 2121 B6 2122 C6 2123 C6 2124 C6 2125 C6 2127 B7 2128 B6 2131 C6 2132 C6 2133 C6 2134 C6 2135 B6 2136 B6 2137 C7 2138 B7 2141 B6 2181 D1 2182 C1 2183 C1 2184 C2 2185 D1 2186 C1 2201 A4 2202 B4 2203 A4 2204 B4 2205 A5 2208 A4 2210 B4 2211 A4 2212 A3 2213 B4 2214 B4 2215 B4 2217 A4 2219 A5 2221 B4 2222 A6 2223 A6 2225 A4 2226 A4 2227 A4 2228 A4 2233 B4 2234 A6 2236 A6 2237 A6 2238 A6 2239 A6 2240 A6 2241 A5 2242 A5 2243 A5 2245 A4 2248 A5 2249 A5 2252 A5 2253 A5 2254 A5 2255 A3 2403 C4 2405 D5 2406 C4 2415 C5 2418 C6 2421 C5 2475 D6 2477 C6 2520 D3 2522 D3 2524 D3 2525 D3 2526 D3 2527 D3 2528 D3 2540 C4 2541 C3 2542 D3 2559 C3 2569 D4 2590 C4 2591 D4 2601 B4 2602 B4 2606 B5 2607 B4 2608 B5 2609 B4 2611 B4 2612 B5 2613 B5 2615 B4 2616 B5 2618 B4 2619 B5 2692 E1 2693 D2 2694 D1 2695 D1 2696 D1 2861 C2 2862 C2 2863 C2 2866 C2 2867 B2 2868 B2 2873 B2 2879 B2 2880 C1 2881 B1 2882 B1 2891 C3 2892 C3
2901 B3 2904 B3 2905 B3 2906 A3 2907 A3 2942 A3 2943 A3 2944 A3 2945 A3 2946 A3 2947 A3 2948 B3 2949 B3 2950 B3 2982 D1 2984 D1 3002 A6 3003 A6 3004 A6 3006 A5 3007 A5 3008 A5 3009 A5 3010 A6 3011 A6 3102 B6 3104 B6 3106 B6 3124 C6 3126 C6 3132 B6 3134 C6 3151 B6 3152 B6 3153 B6 3184 C1 3186 C1 3205 B4 3206 B4 3208 A4 3209 A4 3212 A4 3214 A4 3215 A3 3217 B4 3218 B4 3219 B4 3223 B4 3224 B4 3225 B4 3226 B4 3229 A4 3230 A4 3231 A4 3232 A4 3233 A6 3234 A4 3236 A6 3237 A6 3238 A6 3239 A6 3240 A6 3241 A5 3242 A3 3245 A5 3246 A4 3247 C5 3248 A4 3254 A5 3256 C4 3257 A5 3258 A5 3259 B5 3261 A5 3410 D6 3413 D5 3418 C5 3419 C5 3420 C6 3422 C5 3423 C5 3426 C5 3431 D5 3520 D3 3522 D3 3524 D3 3525 D3 3528 D3 3529 D3 3530 D3 3531 D3 3540 D4 3541 D3 3542 D4 3545 D4 3546 C3 3548 C3 3552 C3 3559 C4 3562 D4 3563 C4 3566 C3 3567 D4 3568 D4 3569 C3 3580 C3 3591 D4 3595 E4 3596 E4 3605 C4 3611 B4 3622 B5 3623 B5 3626 B4 3627 B4 3628 B4 3629 B4 3630 B5 3632 B5 3633 B5 3636 A5 3637 B3 3638 B4 3639 B5 3640 B4 3681 B1 3682 C1 3683 C1
Schematics and PWB’s
Layout Mono Carrier (Part 1 Bottom Side)
30L01.2L AB 7.
Part 1
CL 26532046_63a.eps
260402
Schematics and PWB’s
Layout Mono Carrier (Overview Bottom Side)
Part 1
CL 26532046_63a.eps
Part 3
CL 26532046_63c.eps
43L01.2A AB 7.
2001 A6
2893 C3
3684 B1 3685 C2 3686 B1 3687 C1 3688 C1 3689 C2 3691 E1 3692 E1 3693 E1 3694 E1 3695 C2 3861 C2 3862 C2 3863 C2 3864 C2 3867 C2 3891 B3 3893 C3 3894 B3 3896 C3 3901 B3 3902 B3 3903 A3 3904 A3 3905 A3 3906 A3 3907 A3 3921 A3 3922 A3 3923 A3 3941 A3 3942 A3 3943 A3 3944 A3 3945 A3 3946 A3 3947 A3 3948 A3 3949 A3 3950 A3 3951 A3 4001 A5 4002 A5 4003 A5 4004 A5 4005 A5 4006 A5 4011 A5 4012 A5 4101 B6 4102 B6 4104 B6 4121 B6 4131 C6 4181 B5 4203 A4 4204 A4 4205 B4 4206 B4 4207 B4 4209 A4 4210 A4 4211 A4 4212 A4 4213 A4 4214 B3 4216 A6 4217 A3 4410 C5 4411 C4 4501 D4 4562 D4 4601 B5 4602 B5 4603 B4 4604 A3 4608 A7 4609 A7 4613 B4 4614 A3 4615 B5 4616 B4 4617 A5 4618 A3 4619 A4 4622 A5 4623 A5 4691 E1 4692 C2 4693 C2 4694 B1 4695 E1 4696 C1 4861 B3 4862 B3 4863 B2 4864 B3 4865 B3 4866 C3 4901 A3 4902 A3 4903 A3 4904 A3 4911 A3 4921 B3 4941 A3 4982 E1 5003 A4 6002 A6 6003 A6 6004 A5 6005 A5 6181 D1 6201 B4 6202 B4 6206 B4 6241 C4 6406 C4 6407 C4 6408 C5 6415 C5 6416 D5 6417 C5 6418 C4 6522 D3 6563 D4 6565 C4 6566 C3 6567 D4
6569 D4 6570 C3 6580 C2 6581 C2 6601 B4 6901 B3 7001 A5 7002 A5 7101 B6 7200 A4 7201 A4 7202 A4 7203 A4 7204 B4 7205 A4 7206 A4 7208 A4 7209 A6 7210 A6 7241 B4 7401 C4 7405 D5 7406 C5 7409 C5 7522 D3 7541 C3 7542 C3 7561 C4 7562 D4 7564 D4 7580 C2 7606 B5 7861 C2 7891 B3 7892 B3 7941 A3 7942 A3 7943 A3
Part 2
CL 26532046_63b.eps
Part 4
CL 26532046_63d.eps
CL 26532046_063.eps
221002
2002 A6 2003 A5 2004 A6 2007 A6 2009 A5 2010 A6 2101 B6 2102 B6 2103 B6 2104 B6 2107 B7 2108 B7 2111 B6 2112 B6 2113 B6 2121 B6 2122 C6 2123 C6 2124 C6 2125 C6 2127 B7 2128 B6 2131 C6 2132 C6 2133 C6 2134 C6 2135 B6 2136 B6 2137 C7 2138 B7 2141 B6 2181 D1 2182 C1 2183 C1 2184 C2 2185 D1 2186 C1 2201 A4 2202 B4 2203 A4 2204 B4 2205 A5 2208 A4 2210 B4 2211 A4 2212 A3 2213 B4 2214 B4 2215 B4 2217 A4 2219 A5 2221 B4 2222 A6 2223 A6 2225 A4 2226 A4 2227 A4 2228 A4 2233 B4 2234 A6 2236 A6 2237 A6 2238 A6 2239 A6 2240 A6 2241 A5 2242 A5 2243 A5 2245 A4 2248 A5 2249 A5 2252 A5 2253 A5 2254 A5 2255 A3 2403 C4 2405 D5 2406 C4 2415 C5 2418 C6 2421 C5 2475 D6 2477 C6 2520 D3 2522 D3 2524 D3 2525 D3 2526 D3 2527 D3 2528 D3 2540 C4 2541 C3 2542 D3 2559 C3 2569 D4 2590 C4 2591 D4 2601 B4 2602 B4 2606 B5 2607 B4 2608 B5 2609 B4 2611 B4 2612 B5 2613 B5 2615 B4 2616 B5 2618 B4 2619 B5 2692 E1 2693 D2 2694 D1 2695 D1 2696 D1 2861 C2 2862 C2 2863 C2 2866 C2 2867 B2 2868 B2 2873 B2 2879 B2 2880 C1 2881 B1 2882 B1 2891 C3 2892 C3
2901 B3 2904 B3 2905 B3 2906 A3 2907 A3 2942 A3 2943 A3 2944 A3 2945 A3 2946 A3 2947 A3 2948 B3 2949 B3 2950 B3 2982 D1 2984 D1 3002 A6 3003 A6 3004 A6 3006 A5 3007 A5 3008 A5 3009 A5 3010 A6 3011 A6 3102 B6 3104 B6 3106 B6 3124 C6 3126 C6 3132 B6 3134 C6 3151 B6 3152 B6 3153 B6 3184 C1 3186 C1 3205 B4 3206 B4 3208 A4 3209 A4 3212 A4 3214 A4 3215 A3 3217 B4 3218 B4 3219 B4 3223 B4 3224 B4 3225 B4 3226 B4 3229 A4 3230 A4 3231 A4 3232 A4 3233 A6 3234 A4 3236 A6 3237 A6 3238 A6 3239 A6 3240 A6 3241 A5 3242 A3 3245 A5 3246 A4 3247 C5 3248 A4 3254 A5 3256 C4 3257 A5 3258 A5 3259 B5 3261 A5 3410 D6 3413 D5 3418 C5 3419 C5 3420 C6 3422 C5 3423 C5 3426 C5 3431 D5 3520 D3 3522 D3 3524 D3 3525 D3 3528 D3 3529 D3 3530 D3 3531 D3 3540 D4 3541 D3 3542 D4 3545 D4 3546 C3 3548 C3 3552 C3 3559 C4 3562 D4 3563 C4 3566 C3 3567 D4 3568 D4 3569 C3 3580 C3 3591 D4 3595 E4 3596 E4 3605 C4 3611 B4 3622 B5 3623 B5 3626 B4 3627 B4 3628 B4 3629 B4 3630 B5 3632 B5 3633 B5 3636 A5 3637 B3 3638 B4 3639 B5 3640 B4 3681 B1 3682 C1 3683 C1
Schematics and PWB’s
Layout Mono Carrier (Part 1 Bottom Side)
44L01.2A AB 7.
Part 1
CL 26532046_63a.eps
260402
Colour Television Chassis
AB
(SMALL SCREEN)
Contents Page
1. Technical Specifications, Connections, and Chassis Overview 2
2. Safety Instructions, Warnings, and Notes 4
3. Directions for Use 6
4. Mechanical Instructions 7
5. Service Modes, Error Codes, and Fault Finding 8
6. Block Diagrams, Testpoints Overviews, and Waveforms Block Diagram 15 Testpoint Overview 16 I2C and Supply Voltage Diagram 17
7. Circuit Diagrams and PWB Layouts Diagram PWB Mono Carrier: Power Supply (A1)18 30-35 Mono Carrier: Line Deflection (A2) 19 30-35 Mono Carrier: Frame Deflection (A3) 20 30-35 Mono Carrier: Tuner IF (A4) 21 30-35 Mono Carrier: Video IF + Sound IF (A5) 22 30-35 Mono Carrier: Synchronisation (A6) 23 30-35 Mono Carrier: Control (A7) 24 30-35 Mono Carrier: Audio Amplifier (A8) 25 30-35 Mono Carrier: NICAM + 2CS + BTSC (A9)26 30-35 Mono Carrier: A/V Source Switching (A10) 27 30-35 Mono Carrier: Front I/O, Control + Headphone (A12) 28 30-35 Mono Carrier: Rear I/O CINCH (A13) 29 30-35 CRT Panel (B1) 36 37 Side AV Panel (E) 38 38 Side AV Panel + Headphone (E1) 39 39
8. Alignments 41
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 47
10. Spare Parts List 58
11. Revision List 61
CL 16532016_FSS.eps
050401
©
Copyright 2005 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 JH 0561 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 12751
EN 2 L01.2A AB1.
Technical Specifications, Connections, and Chassis Overview
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Introduction
1.2 Connections
1.3 Chassis Overview
Note:
• Below described specifications are not valid for one product, but for the whole product range. See Product Survey for specific models.
• Figures can deviate slightly from the actual situation, due to different set executions.
1.1 Technical Specifications
1.1.1 Reception
Tuning system : PLL Colour systems : NTSC
: PAL B/G, D/K, I : SECAM B/G, D/K, K1
Sound systems : FM-mono
: FM-stereo
1.2 Connections
1.2.1 Front (or Side) Connections and Front (or Top) Control
A/V connections : NTSC 3.58, 4.43
: PAL 60
Channel selections : 100 channels
: U, V, S, H
Aerial input : 75 Ω, IEC-type
1.1.2 Miscellaneous
Audio output : 1 x 4 W or,
: 2 x 3 W or, : 2 x 5 W + 10 W (sw) +
2 x 3 W
Mains voltage : 90 - 276 V or,
: 150 - 276 V
Mains frequency : 50 Hz or,
: 60 Hz Ambient temperature : + 5 to + 45 °C Maximum humidity : 90 % Power consumption : 36 W (14”) to
: 52 W (21”) Standby Power consumption : < 3 W
V- C+C-V+
IR
RED
- VOLUME +
- PROGRAM +
A/V In (if present)
1 -Video CVBS (1 Vpp / 75 Ω) jq 2 -Audio L (0.2 Vrms / 10 kΩ) jq 3 -Audio R (0.2 Vrms / 10 kΩ) jq 4 -Headphone (8 - 600 Ω / 4 mW) rt
Figure 1-1
C+C-V+V-
P+
P-
Mono
R
L
Video
Audio
V+V-
CL 16532016_020.eps
220501
Technical Specifications, Connections, and Chassis Overview
EN 3L01.2A AB 1.
1.2.2 Rear Connections
75 Ohm
FM
MONITOR
OUT
V
L
R
AV1
IN
Y
U
V
V
L
R
V
L
R SVHS
Figure 1-2
Monitor Out
1 - Video CVBS (1 Vpp / 75 Ω) kq 2 - Audio L (0.5 Vrms / 1 kΩ) kq 3 - Audio R (0.5 Vrms / 1 kΩ) kq
1.3 Chassis Overview
AV2
IN
CL 16532008_005.eps
120601
YUV In (if present)
1 - Y 0.7 Vpp / 75 Ω jq 2 - U 0.7 Vpp / 75 Ω jq 3 - V 0.7 Vpp / 75 Ω jq
AV1 In
4 - Video CVBS (1 Vpp / 75 Ω) jq 5 - Audio L (0.5 Vrms / 10 kΩ) jq 6 - Audio R (0.5 Vrms / 10 kΩ) jq
AV2 In
1 - Video CVBS (1 Vpp / 75 Ω) jq 2 - Audio L (0.5 Vrms / 10 kΩ) jq 3 - Audio R (0.5 Vrms / 10 kΩ) jq
AV2 In (SVHS)
1 - gnd v 2 - gnd v 3 - Y 1 Vpp / 75 Ω j 4 - C 0.3 Vpp / 75 Ω j
CRT PANEL
B
SIDE AV PANEL + HEADPHONE
E1
SIDE AV PANEL
E
(SMALL SCREEN)
Figure 1-3 Chassis overview
MAIN
CHASSIS
PA NE L
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 CINCH
F_12751_005.eps
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A12
A13
120105
EN 4 L01.2A AB2.
Safety Instructions, Warnings, and Notes
2. Safety Instructions, Warnings, and Notes
Index of this chapter:
2.1 Safety Instructions For Repairs
2.2 Maintenance Instructions
2.3 Warnings
2.4 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.
• Safety components, indicated by the symbol h, should 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 MΩ and 12 MΩ.
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.
2.2 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.
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).
V
CL 26532098/042
140792
Figure 2-1
• All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD) w. 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 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.
2.4 Notes
2.4.1 General
• Measure the voltages and waveforms with regard to the chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or
61.25 MHz for NTSC (channel 3).
• Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in stand-by (F). These values are indicated by means of the appropriate symbols.
• The semiconductors indicated in the circuit diagram and in the parts lists, are interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors.
Safety Instructions, Warnings, and Notes
EN 5L01.2A AB 2.
2.4.2 Schematic Notes
• All resistor values are in ohms and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kohm).
• Resistor values with no multiplier may be indicated with either an "E" or an "R" (e.g. 220E or 220R indicates 220 ohm).
• All capacitor values are given in micro-farads (µ= x10 nano-farads (n= x10
• Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF).
• An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values.
• The correct component values are listed in the Spare Parts List. Therefore, always check this list when there is any doubt.
2.4.3 Rework on BGA (Ball Grid Array) ICs
General
Although (LF)BGA assembly yields are very high, there may still be a requirement for component rework. By rework, we mean the process of removing the component from the PWB and replacing it with a new component. If an (LF)BGA is removed from a PWB, the solder balls of the component are deformed drastically so the removed (LF)BGA has to be discarded.
Device Removal
As is the case with any component that, it is essential when removing an (LF)BGA, the board, tracks, solder lands, or surrounding components are not damaged. To remove an (LF)BGA, the board must be uniformly heated to a temperature close to the reflow soldering temperature. A uniform temperature reduces the chance of warping the PWB. To do this, we recommend that the board is heated until it is certain that all the joints are molten. Then carefully pull the component off the board with a vacuum nozzle. For the appropriate temperature profiles, see the IC data sheet.
Area Preparation
When the component has been removed, the vacant IC area must be cleaned before replacing the (LF)BGA. Removing an IC often leaves varying amounts of solder on the mounting lands. This excessive solder can be removed with either a solder sucker or solder wick. The remaining flux can be removed with a brush and cleaning agent. After the board is properly cleaned and inspected, apply flux on the solder lands and on the connection balls of the (LF)BGA. Note: Do not apply solder paste, as this has shown to result in problems during re-soldering.
Device Replacement
The last step in the repair process is to solder the new component on the board. Ideally, the (LF)BGA should be aligned under a microscope or magnifying glass. If this is not possible, try to align the (LF)BGA with any board markers. To reflow the solder, apply a temperature profile according to the IC data sheet. So as not to damage neighbouring components, it may be necessary to reduce some temperatures and times.
More Information
For more information on how to handle BGA devices, visit this URL: www.atyourservice.ce.philips.com (needs subscription, not available for all regions). After login, select “Magazine”, then go to “Workshop Information”. Here you will find Information on how to deal with BGA-ICs.
-9
), or pico-farads (p= x10
-12
2.4.4 Lead Free Solder
Philips CE is going to produce lead-free sets (PBF) from
1.1.2005 onwards.
-6
),
).
Figure 2-2 Lead-free logo
This sign normally has a diameter of 6 mm, but if there is less space on a board also 3 mm is possible.
Regardless of this logo (is not always present), one must treat all sets from this date onwards according to the following rules.
Due to lead-free technology some rules have to be respected by the workshop during a repair:
• Use only lead-free soldering tin Philips SAC305 with order code 0622 149 00106. If lead-free solder paste is required, please contact the manufacturer of your soldering equipment. In general, use of solder paste within workshops should be avoided because paste is not easy to store and to handle.
• Use only adequate solder tools applicable for lead-free soldering tin. The solder tool must be able – To reach at least a solder-tip temperature of 400°C. – To stabilise the adjusted temperature at the solder-tip. – To exchange solder-tips for different applications.
• Adjust your solder tool so that a temperature around 360°C
- 380°C is reached and stabilised at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will rise drastically and flux-fluid will be destroyed. To avoid wear-out of tips, switch “off” unused equipment or reduce heat.
• Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If not to avoid, clean carefully the solder-joint from old tin and re-solder with new tin.
• Use only original spare-parts listed in the Service-Manuals. Not listed standard material (commodities) has to be purchased at external companies.
• Special information for lead-free BGA ICs: these ICs will be delivered in so-called "dry-packaging" to protect the IC against moisture. This packaging may only be opened short before it is used (soldered). Otherwise the body of the IC gets "wet" inside and during the heating time the structure of the IC will be destroyed due to high (steam­)pressure inside the body. If the packaging was opened before usage, the IC has to be heated up for some hours (around 90°C) for drying (think of ESD-protection!). Do not re-use BGAs at all!
• For sets produced before 1.1.2005, containing leaded soldering tin and components, all needed spare parts will be available till the end of the service period. For the repair of such sets nothing changes.
In case of doubt whether the board is lead-free or not (or with mixed technologies), you can use the following method:
• Always use the highest temperature to solder, when using SAC305 (see also instructions below).
• De-solder thoroughly (clean solder joints to avoid mix of two alloys).
Caution: For BGA-ICs, you must use the correct temperature­profile, which is coupled to the 12NC. For an overview of these profiles, visit the website www.atyourservice.ce.philips.com (needs subscription, but is not available for all regions)
P
b
EN 6 L01.2A AB3.
Directions for Use
You will find this and more technical information within the "Magazine", chapter "Workshop information". For additional questions please contact your local repair help desk.
2.4.5 Practical Service Precautions
• It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
3. Directions for Use
You can also download this information from the following websites:
http://www.philips.com/support http://www.p4c.philips.com
dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.
• Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.
4. Mechanical Instructions
Mechanical Instructions
EN 7L01.2A AB 4.
Index of this chapter:
4.1 Rear Cover Removal
4.2 Service Position Main Panel
4.3 Side I/O Panel Removal
4.4 Rear Cover Mounting
Note: Figures can deviate slightly from the actual situation, due to different set executions.
4.1 Rear Cover Removal
1. Remove all fixation screws of the rear cover.
2. Now pull the rear cover backward and remove it.
4.2 Service Position Main Panel
1. Disconnect the strain relief of the AC power cord.
2. Remove the main panel, by pushing the two center 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.
4.3 Side I/O Panel Removal
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.
CL 06532012_004.eps
030200
Figure 4-2
4.4 Rear Cover Mounting
Before you mount the rear cover, perform the following checks:
1. Check whether the mains cord is mounted correctly in its
1
1
2
A
guiding brackets.
2. Replace the strain relief of the AC power cord into the cabinet.
3. Check whether all cables are replaced in their original position.
B
Figure 4-1
3
CL 16532016_006.eps
220501
EN 8 L01.2A AB5.
Service Modes, Error Codes, and Fault Finding
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Problems and Solving Tips (Related to CSM)
5.4 ComPair
5.5 Error Buffer
5.6 The Blinking LED Procedure
5.7 Protections
5.8 Repair Tips
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 Circuit Diagram A1-A2-A3-….. C1-C2-C3-….. F1-F2-F3-….. I1-I2-I3-….. L1-L2-L3-…. P1-P2-P3-….. S1-S2-S3-….. V1-V2-V3-…..
TEST POINT OVERVIEW L01
Audio processing A8, A9 / A11 Control A7 Frame drive A3 Tuner & IF A4 Line drive A2 Power supply A1 Synchronisation A6 Video processing A5, B1
CL 16532008_044.eps
210501
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 (AP-PAL). – 61.25 MHz (channel 3) for NTSC-sets (AP-NTSC).
• Colour system: – PAL-BG for AP-PAL. – NTSC for AP-NTSC.
• 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-favorite presets / channels, – auto store of personal presets, – auto user menu time-out.
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 (when this mode is not present, set all controls to 50%, set volume to 25% and select channel
3).
• 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 (see also paragraph 5.4).
SW cluster
1AP1 1AP2 1AP3 1AP9 3AP1 3AP2 4AP1 Abbreviations: A= Asia Pacific, C= NTSC, N= no TXT, T= TXT
SOFTWARE VERSIONS (L01 AP SMALL SCREEN)
SW name UOC-type Diversity
L01AN1-x.y TDA9580/1 AP, non TXT, China/AP L01AN2-x.y TDA9581/2 AP, non TXT, Thailand/Vietnam L01AN3-x.y TDA9580/1 AP, non TXT, India L01AN9-x.y TDA9581 AP, non TXT, Middle East L01AT1-x.y TDA9561/7 AP, 10 page TXT, Sgp/Aus/NZ L01AT2-x.y TDA9567 AP, 10 page TXT, Middle East L01AC1-x.y TDA9580 AP, NTSC, Thailand/Philippines
CL 16532008_070.pdf
220801
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 AC power. 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.
After entering SDM, the following screen is visible, with SDM at the upper right side for recognition.
Figure 5-2
Service Modes, Error Codes, and Fault Finding
/STA
AAABCDEE X . Y SDM
ERRXXXXXXXXXX
MENU
SDM
Ma i n ^
• Pic ture > Brightness
• Sound Col our
• Fea t ures Cont ras t
• I nst al l Sharpness Co l ou r Temp Store
v
EN 9L01.2A AB 5.
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 or
•Via ComPair.
The following screen is visible, with SAM at the upper right side for recognition.
LLLL AAABCD X. Y SAM ERR XX XX XX XX XX XXX XXX XXX XXX XXX XXX XXX
CLEAR CL EAR ? OPT I ONS > AKB 0 / 1
TUNER > WH I T E T ON E > GEOMETRY > AUD I O >
OSD
CL 16532020_060.pdf
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 AC power, the set will return in SDM when AC power is re-applied). The error buffer is cleared.
5.2.2 Service Alignment Mode (SAM)
Purpose
• To perform alignments.
• To change option settings.
• To display / clear the error code buffer.
SDM
220501
TUS
CL 16532020_061.eps
150401
Figure 5-4
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: C= NTSC, D= DVD, N= no TXT, T= 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: – (De)activate the selected menu item. – Change the value of the selected menu item.
EN 10 L01.2A AB5.
Service Modes, Error Codes, and Fault Finding
– 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 AC power, the set will return in SAM when AC power 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 a lot of 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
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:
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 AC power switch.
5.3 Problems and Solving Tips (Related to CSM)
5.3.1 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.
1AAABCD X.Y CSM 2 CODES XX XX XX XX XX 3 OP XXX XXX XXX XXX XXX XXX XXX 4 D ETECT ED SYST EM DE TECT ED SOUND 5 NOT TUNED SKIPPED 6TIMER 7 8 CO XX CL XX BR XX HU XX SH XX 9VLXX BL XX AVL DVXX
10 TR XX BS XX
CL 16532008_046.eps
220501
Figure 5-5
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 (OB) 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 color 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. Indicates if the V-chip feature is enabled.
8. Value indicates parameter levels at CSM entry. CO= CONTRAST, CL= COLOR, BR= BRIGHTNESS, HU= HUE, SH= SHARPNESS
9. Value indicates parameter levels at CSM entry. VL= VOLUME LEVEL, BL= BALANCE LEVEL, AVL= AUTO VOLUME LEVEL LIMITER, DV= DELTA VOLUME
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.
• 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.
Service Modes, Error Codes, and Fault Finding
EN 11L01.2A AB 5.
• The tuner is faulty (in this case the CODES line will contain error number 10). Check the tuner and replace / repair if necessary.
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.
5.4 ComPair
receive I television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I
2
C commands to the micro controller of the
2
C 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.
5.4.1 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 I is therefore capable of accurately indicating problem areas. You do not have to know anything about I 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).
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 I
2
the I
C bus of the television. ComPair can send and
2
C level. ComPair can access
2
C level) and
2
C commands
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 AC power 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 AC power).
6. Connect the ComPair interface cable between the connector on the rear side of the ComPair interface (marked with ‘I
2
C’) and the ComPair connector on the
mono carrier (see figure 8-1 suffix D).
7. Plug the AC power adapter in the AC power 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.
PC VCR I2CPower
Figure 5-6
9V DC
86532027_003.EPS
050898
EN 12 L01.2A AB5.
Service Modes, Error Codes, and Fault Finding
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.
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 AC power, 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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
CL 16532008_047.pdf
Figure 5-7
210501
Service Modes, Error Codes, and Fault Finding
EN 13L01.2A AB 5.
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 ≥ 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.
5.7 Protections
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+13V’ 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.
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 Service-standby, 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 TS7460 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 measuring equipment to ground, then to 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 µP ‘POR’ and ‘+8V protection’ happen at the same
EN 14 L01.2A AB5.
Personal Notes:
Service Modes, Error Codes, and Fault Finding
E_06532_012.eps
131004
Block Diagrams, Testpoints Overviews, and Waveforms
6. Block Diagrams, Testpoints Overviews, and Waveforms
Block Diagram
EN 15L01.2A AB 6.
REAR I/O CINCH
A13
MONITOR
OUTPUT
YUV INPUT
OR
SIDE AV
V
L
R
TUNER IF
A4
V
LOTAUX
FM
SDA
A7
SCL
A7
SEL-IF-LL-M-TRAP
A7
POWER SUPPLY
A1
150 - 250V SINGLE RANGE
90 - 276V FULL RANGE
AUDIO/VIDEO
A10
V
L
V-OUT
G-Y-IN
B-U-IN
R-V-IN
VT
FM
IF
AGC
1
0212
1
2
5500 : 5502
DRAIN
CTRL
CONTROL
IC
A5
A10
A10
A5
A5
A5
STEREO
V
L
R
6001 BZX79-C33
I3
10
I4
11
8
DRIVE R
SENSE
DEMAG
VCC
AV1
AV2
SVHS
6
5
4
1
3527
3523
3525
3522
3531
R
154
V
L
R
A
B
C
1002 1003
1004
1
R
P
+t
2
6500
AC
6502
P2
7101
V
L
R
Y
U
V
E1E
0253
3
0251
3
1
A2
+5V
0265
1
3001
3000
0231
0211
A12
0219
6
3
1
VT_SUPPLY
5001
1000 6, 7 9
2
ERR
10
TV
I1
I2
Degaussing
MAINS
SWITCH
SC1 L-OUT
SC1 R-OUT
FRONT I/O
A
B
C
FM-RADIO
TUNER
+
TV TUNER
5
4
7001 7002
FILTER
SELECTION
Coil
1
1500
T4E
MONO
V
L
7520 TEA1507
3
CVBS1-IN
9
11
10
6
Y-CVBS-IN
5
32
4
CVBS-FRONT-IN
L-FRONT-IN
R-FRONT-IN
FM
VIF_1
VIF_2
SIF1
SIF2
RF_AGC
3504
R
3
+t
3
+t
3503
6501
2503
6503
7521 STP7NB60FP
D
G
S
3526
6520
2521
3519
P3
HOT GROUND COLD GROUND
L1-IN
R1-IN
STATUS2
C-IN
L2-IN
R2-IN
A5
P1
1
2
3
5
6
7
N.C.
3
4
A5
A5
A10
A10
A7
A10
A5
A10
A10
A10
A5
A10
A10
VIDEO IF, SOUND IF
18
19
22
23
24
A13 A12
2
5520
SEL_MAIN_FRNT_RR
A7
A9
A12
A13
A13
A9
A12
A13
A13
A9
SEL_MAIN_FRNT_RR
A7
A12
A13
7209, 7210
FM RADIO
PRE-AMPLIFIER
7200-A TDA95XX
VIDEO
IF
AGC
QSS
SOUND
IF + AGC
SOUND
FM-DEMOD.
DE-EMPH.
L1-IN
LF FRONT-IN
7580
1515
43
ENERGIZING
1
10
9
13
12
1
7515 TCET1103
2
SOURCE SWITCHING
SC2-CTRL
L-FRONT-IN
L1-IN
L2-IN
SC1-LOUT
R-FRONT-IN
R1-IN
R2-IN
SC1-R-OUT
CVBS-FRONT-IN
Y-CVBS-IN
CIRCUIT
7801 HEF4052BT
9
SWITCH
LOGIC
10
1
5
3
2
4
12
14
15
11
FMR
VIDEO
PLL
DEMOD.
QSS MIXER AM DEMOD.
AUDIO
SWITCH
28 29
V
6562
6564
5562
6560
5560 5563 5561
6561
V
DEFL
7802 HEF4053BT
9
SWITCH
LOGIC
5
2
LOTAUX
7561, 7562 7564
POWER
DOWN
CIRCUIT
A2
7540, 6540
REFERENCE
CIRCUIT
7541, 7542
STANDBY
CIRCUIT
AMPLIFIER
+13V
3564
2564
13
4
VIDEO
SOUND
AMPL.
+ AVL
2561
SY-CVBS-IN
3558
7560
P5
3543
3544
7803
SC1-LIN
A13
SC1 L-OUT
7804
SC1-R IN
A13
SC1 R-OUT
A5
V10
38
+8V
33
48
+3.9V
P4
+3.3V
2567
M_AUX
3570
MAIN AUX
AUDIO SUPPLY GND
ERR
7
POWER DOWN
P6
95V
MAIN SUPPLY
STDBY_CON
A9
A9
7206
3230
MONO/AM_ MONO_SOUND
12V
A8 A9
A6
A7
AUDIO AMPLIFIER
A8
MONO SETS ONLY
MONO/AM-MONO-SOUND
A5
A7
TREBLE-BUZZER-HOSP-APP
A7
NICAM, 2CS BTSC DECODER
A9
QSS-AM-DEM-OUT
FMR
MONO/AM-MONO-SOUND
A11
A5
SC1-L IN
A10
SC1-R IN
A10
SDA
A7
SCL
A7
QSS_AM_DEM_OUT
AUDIO CARRIER
+8V
7201
3208
3211
SYNCHRONISATION
A6
EHT INFO
A2
SANDCASTLE
N.C.
H FLYBK
A2
POWER-DOWN
A7
EHT INFO
A2
EHT o
A2
ERROR CODE LIST
Error Description 0 No error 1 X-Ray / over voltage protection (USA only) 2 High beam (BCI) protection 3 Vertical guard protection 4 I2C error while communicating with the sound processor 5 Power ON reset (POR bit) 3.3V protection / +8V protection 6 General I2C error 7 Power Down (over current) protection 8 EW protection (Large Screen only) 9 I2C error EEPROM error 10 I2C error PLL tuner 11 Black current loop instability protection
BASS-PANORAMA
7834 7835
3834 2847
A7
3833
A6
3832
FILTERS
5201
1200
5.5MHz
1201
6MHz
7202
1202
4.5MHz
3259
3242
7241
3247
7831 MSP34X5G
47
DEMODULATOR
44
41
42
8
7
7203
2254
11
31
S1
34
7941:7943
NICAM, 2CS,
AM, FM
INPUT
SWITCHING
ERR
4
3213
3210
SEL-IF-LL-M-TRAP
7200-D TDA95XX
VIDEO IDENT
H/V SYNC
SEPARATOR
H-OSC
+PLL
V9
A13
A10
A13
25
24
31
30
4
51
52
2203
C-IN
SY-CVBS-IN
CVBS1-IN
H V
A10
MAIN-OUT-L
A9
MAIN-OUT-R
MONO/AM-MONO-SOUND
A8
SC1-L OUT
SC1-R OUT
SC2-CTRL
1831 18M432
40
45
44
42
A7
5241
9
H-DRIVE
2nd LOOP
H-SHIFT
TXT/OSD DISPLAY
V-DRIVE
+
GEOMETRY
EW
+
GEOMETRY
MAIN-OUT-L
OR
A5
A10
A10
A10
7200-C TDA95XX
I/O
SWITCHING
VIDEO
FILTERS
VIDEO IDENT
DECODER
+8V
S2
3251
30 H DRIVE
S3
3244
17
S4
3249
16
S5
3250
15
OR
V4
Y-DELAY
PAL/NTSC
SECAM
V DRIVE+
V DRIVE-
N.C.
A7
47
R-Y
B-Y
VOLUME MUTE
MAINAUX
OR
R-
R+
L+
L-
7205
BASE
BAND
DELAY
A13 A13 A13
A2
A3
VDRIVE+
VDRIVE-
7901 AN7522N (STEREO)
7902 AN7523N (MONO)
62 L+
8
9
ERR
1
7
A12
L+
L-
R-
R+
E1
0254
0246
1
1
2
2
3
3
4
4
5
5
3222
3221
RGB
MATRIX
RGB
INSERT
Y
BLACK
STRETCH
U
WHITE
V
STRETCH
51 52 53 50 54
R-V-IN G-Y-IN B-U-IN FBL-1N.C.
LINE DEFLECTION
V
+13V
LOTAUX
V
A1
DEF
7403 7404
7401
L1
FRAME DEFLECTION
F1
3474
3479
WITHOUT
SIDE AV
A1
A2
4L-
A3
10 R-
A4
12 R+
HEADPHONE
L+
L-
R-
R+
HEADPHONE
L+
L-
R-
R+
V-OUT
A13
+8V
OSD
RGB
R
CONTROL
G
OSD TEXT
B
INSERT
BLUE
STRETCH
WHITE-P.
ADJ
7204
EHT INFO
PROC.
M_AUX
6406 BAV70
3404
5444
DRIVER
STAGE
HFLYBK
A6
VLOT AUX +13V
7471
TDA9302H
7
1
F2
3475
+HP
0246
4
3
2
1
0255
4
3
2
1
6471
2
+
OP. AMP
-
56
R
57
G
B
58
55
MAIN SUPPLY
L3
7402
BUT11APX
L2
2473
6
FLYBACK
GENERATOR
THERMAL
PROTECTION
4
-13V
95V
L
R
L
R
3201
3202
3203
3204
3235
A12
6692 TSOP1836
V5
V6
V7
V9
BLK-IN
A2
EHT INFO
LINE OUTPUT CIRCUIT
FRONT CONTROL
+3.3V
LOCAL
KEYBOARD
0243 0245
1
2
3
4
5
BLK
6
A2
6409
F5
3
F3
5
F4
IR IR
6691
LED
KEYBOARD­PROTN
CRT
B
1
2
3
4
5
6
+160V
3416
VIDEOSUPPLY
2
7
1
0221 1
2
HOR. DEFL. COIL
ERR
3
V_GUARD
0222
3471
1
2
3471
A7
A13
A1
POWER DOWN
V11
V13
BLKCURINFO
5445
A2
VERT. DEFL. COIL
CONTROL
STATUS1
STATUS2
KEYBOARD-
_PROTN
7311:
-
7313
V12
3347
0244
0220
EHT
FOCUS VG 2
8
5
4 N.C.
3
10
9
6
ERR
5
67
N.C.
1
69
5
LED
80
3316 3326
7321:
-
7323
FILAMENT
321
6402
6410
6405
6423
3411
6413
7200-B TDA95XX
ROM RAM
1/10
PAGES
MEMORY
TELE TEXT
CVBS
R G B
BL
COR
3317
7331:
7333
3421
7408
3423
3428 3427
+3.3V
66 61 59
I/O
IIC
BUS
TRANSCEIVER
I/O
PORTS
SYNC
OSD
TELETEXT
DISPLAY
3336
R
-
ERR
11
5341
7407
L7
2417
3413
3412
2419
56035602
PWM-
G
B
VST
DAC
CPU
3317
3327
3337
3422
L8
7406, 7409
7405
5604
68 7
72
71
3
6
70
78
77
73
63
64
H
V
V15
V16
3349
V
LOTAUX
L4
L5
L6
PROT
CIRCUIT
PROT
CIRCUIT
+3.9V
C4
C5
C1
12MHz
C2
V14
7
5
3
3425
3431
2422
2410
+3.3V
7602 M24C08
EEPROM
8
(NVM)
6
ERR
5
9
36063607
3625
SDA
3624
SCL
ERR
6
SEL-IF-LL-M-TRAP
STANDBY-CON
SEL-MAIN-FRONT-RR
BASS PANORAMA
TREBLE-BUZZER-HOSP-APP
VOLUME/MUTE
SDM
9641
9631
1660
CONNECTION
SDA
SCL
+160V
R
G
B
3348
3350
2
G
V FOCUS
V
+13V
ERR
2
EHT INFO
A5 A6
V
+13V
LOTAUX
V
+5V
LOTAUX
+8V
FILAMENT
-13V
VT_SUPPLY
A4
V
A3
GUARD
BLK-IN
A5
EHT o
A6
ERR
2
CL 16532052_001.eps
3611
36033604
SDA
SCL
A4 A5
A1
A10
A8
A8
A8
SERVICE COMPAIR
CRT
230801
EHT
A4 A7 A9
0217
25kV
1
2
3
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