Manules

Solo disponible en BuenasTareas
  • Páginas : 17 (4098 palabras )
  • Descarga(s) : 0
  • Publicado : 10 de abril de 2010
Leer documento completo
Vista previa del texto
1

Colour Television

Chassis

L7.2E
AA

CL 86532008_004.ai 160298

ServiceManual
Table of contents
1 2 3 4 5 Technical specifications Location of panels Connection facilities Safety instructions, Warnings and Notes Mechanical instructions Repair facilities Software adjustments and Hotel mode Fault finding tree Block diagram, Survey of testpoints Diagram supply voltages surveyElectrical Diagrams and print lay-outs

Page
2 3 4 6 7

6

13 14 15 15

7

Power supply diagram A1 Sync, Horizontal + Vertical output diagram A2 Tuner, IF,Video,Chroma diagram A3 Control diagram A4 Sound processing, Sound interfacediagram A5 CRT panel diagram B Sound Multi-mono panel diagram C Sound Nicam-2CS panel diagram D 8 Electrical adjustments 9 Circuit diagram description (newcircuits) 10 Directions for use 11 List of abbreviations 12 Spareparts list
5 Subject in The Netherlands of Philips. without theby FMpermision Service Department Copyright prior 9863 Printed to modification TV Published reserved 1998 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system ortransmitted, in any form or by any means, electronic, mechanical, photocopying, or 727 21567 4822 otherwise

Diagram 16 18 20 21 22 23 24 26 27 29 32 36 37

PWB 17,19 17,19 17,19 17,19 17,19 23 25 25

©Copyright reserved 1998 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, inany form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permision of Philips.

Published by FM 9863 TV Service Department

Printed in The Netherlands

Subject to modification

5 4822 727 21567

2
Mains Voltage:
1 Technical specifications

L7.2E

1
: : : : : : : : :

Technical specifications
220 - 240 V AC (+/- 10%) 17” 50 W (stand by < 7W) 21” 57 W (stand by < 7 W) +/- 300 Hz +/- 600 Hz 45 - 64.5 Hz

Power consumption

Pull in range colour sync Pull in range horizontal sync Pull in range vertical sync

Location of panels
C MULTIMONO OR D
NICAM, MAIN CRT AUDIO PANEL POWER SUPPLY SYNCHRONISATION HOR.DEFLECTION VERT. DEFLECTION TUNER IF VIDEO PROCESSING CONTROL AUDIO SOURCE INPUT AUDIO PROCESSING

B

A1 A2

A3 A4 A5
CL86532008_005.ai 260398

2
2

Connection facilities
Connection facilities

L7.2E

3

IR Red

Video L R (Ext2) Audio

Volume

- + - +

Channel

EXT1
CL86532008_008.ai 170298

2.1

Cinch
- Video - Audio - Audio 1Vpp/75Ω L(0.5Vrms ≥10kΩ) R(0.5Vrms ≥10kΩ) q q q

4.5-7V:EXT 16:9 9.5-12V:EXT 4:3 91011121314Green Green (0.7Vpp/75Ω) v v (0.7Vpp/75Ω) (0-0.4V:INT 1-3V:EXT/75Ω)1718192021CVBS CVBS CVBS CVBS Earth socket v v k j j v

2.2

Head phone
(32-600Ω ≥10mW) ot

2.3

Euroconnector

Red RGBstatus 15- Red 16- RGBstatus

12345678-

Audio Audio Audio Audio Blue Audio Blue CVBSstatus

R (0.5Vrms ≤1kΩ) R (0.5Vrms ≥10kΩ) L (0.5Vrms ≤1kΩ) L (0.5Vrms ≥10kΩ) (0.7Vpp/75Ω) 0-1.3V:INT

k j k v v j

(1Vpp/75Ω) (1Vpp/75Ω)

4
3.1
3

L7.2E
Safetyinstructions, Maintenance instruction, Warnings and Notes

3

Safety instructions, Maintenance instruction,
– When the set is used in circumstances with higher dust, grease or moisture levels, for example in a kitchen, the recommended interval is 1 year. The maintenance inspection contains the following actions: • Execute the above mentioned 'general repair instruction'. • Clean the power supplyand deflection circuitry on the chassis. • Clean the picture tube panel and the neck of the picture tube.

Safety instructions for repairs



Figure 3-1
1. Safety regulations require that during a repair: – the set should be connected to the mains via an isolating transformer; – safety components, indicated by the symbol (see fig. 3.1), should be replaced by components identical to the...
tracking img