Black Box IC515C Service Manual download pdf (Page 98)

23. RA-6 Protect Circuit Troubleshooting

STBY

TRANS.

REG

R5016

R5026

IC5006

D5001

R5038

D5020

R5020

Q5002

D5007

CN6-5

CN6-4

TO 135V

OVP

IC5002-5

SELF DIAGNOSTICS

D5022

RY6002

D5017

C5050

9.8V

R5011

IC5005

IC5002

C5051

Q5005

R5010

R5013

AU+19V

AU-19V

-15V

+15V

AU+19V

+22V

IC5004

135V

D5019

D5023

D5033

D5026

D5024

R5043

D5025

R5046

D5032

D5031

Q5007

D5014

R5012

T6001

PIN 11

ABL

Q5004

Q5003

D5015

R5021

RELAY

HIGH

R5028

Q5001

D5018 6V OVP

23V

FIGURE 23-2 - PROTECT CIRCUITS RA-6 CHASSIS

23.2TVP14 1471 7/11/02

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 123 124

Projection Television 1
Troubleshooting 1
Table of Contents 2
28. Auto Registration 3
29. Model-to-Chassis 3
Chapter 1 - Introduction 4
1. Features 5
Voltage Regulation Errors 8
Low B+ 8
The Main Power Supply 9
1TVP14 1448 7/17/02 11
B+ Regulator Troubleshooting 14
4.1TVP14 7/11/02 16
5.1BTVP14 1451 7/17/02 18
Pincushion Correction 19
Vertical Deflection 20
5.2TVP14 1449 6/17/02 21
T & S Models 23
6.1TVP14 6/26/02 24
6.2TVP14 5/22/02 26
FIGURE 6-4 - CRT DRIVE (CG) 27
6.5TVP14 6/26/02 28
6.6TVP14 5/22/02 30
6.7TVP14 5/22/02 31
FIGURE 8-2 - STANDBY SUPPLY 34
VCC Switching 35
8.5TVP14 6/26/02 36
Unit Will Not Power Up 37
Shorted Switching Transistors 38
Regulator Troubleshooting 38
FIGURE 8-6 - REGULATION 39
FIGURE 9-1 - PROTECTION BLOCK 41
FIGURE 9-2 - DC PROTECTION 42
Horizontal Deflection 43
FIGURE 10-2 - H OUT 44
Horizontal Deflection Loss 46
FIGURE 10-5 - VDSP 48
Regulation 52
11.3TVP14 7/11/02 53
High Voltage Protection 54
FIGURE 11-5 - HV STOP 1 55
FIGURE 11-6 - HV STOP 2 56
12.1TVP14 6/4/02 58
FIGURE 12-2 - INPUT SWITCHING 59
FIGURE 12-3 - 3D COMB FILTER 60
12.4TVP14 7/11/02 61
12.5TVP14 6/7/02 62
12.6TVP14 6/11/02 63
FIGURE 12-7 - MID BLOCK 64
FIGURE 12-8 - VIDEO PROCESSOR 65
6/24/0214.1TVP14 67
6/17/0214.2TVP14 68
Standby Power Supply 71
Primary Power Supply 71
16.2TVP14 1465 6/13/02 72
Secondary Power Supply 74
16.3TVP14 1466 6/13/02 75
17.1TVP14 1464 6/24/02 77
Pincushion Troubleshooting 80
18.1TVP14 1468 7/10/02 81
18.2TVP14 1462 82
19.2TVP14 1469 6/11/02 86
*SERVICE MODE 88
23.1TVP14 1472 6/12/02 96
23.2TVP14 1471 7/11/02 98
24.1TVP14 7/17/02 100
24.2TVP14 1473 6/13/02 101
General Description 102
25.2TVP14 7/17/02 105
26.1TVP14 1477 7/17/02 107
26.2TVP14 1474 6/13/02 109
26.3TVP14 1475 6/13/02 110
26.4TVP14 1476 6/13/02 111
Overview 112
27.1TVP14 6/19/02 113
Flash Focus 118
Error Codes 121
07/18/02 124

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Black Box IC515C Service Manual Page 98

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