Component Level Repair - Sony KD-34XBR2 Training Manual

FIGURE 11-12 - FLOW CHART 3 - VIDEO TROUBLESHOOTING - ATSC SIGNAL

Component Level Repair

Detailed Video Signal Flow
The video signal flow is divided into four parts as shown in Chart 11-7. A block diagram represents each part.
Figure #
11-13 Video Process 1
11-14 Video Process 2 -
DTV Video
11-15 Video Process 3
11-16 DTV Tuner
HIGH DEFINITION
SINGLE PICTURE
HAS A DEFECT
IS THE DEFECT
SIMILAR FOR
ALL INPUTS
(V5, V6)?
YES
ACTIVATE THE
INTERNAL
VIDEO GENERATOR
CAN THE
DEFECT STILL
BE SEEN?
YES
Q BOX OR [M] BOARD IS
PROBABLY
DEFECTIVE. MID (IC8703)
A/D (IC8601), OR CXA2151
(IC2000)
Chart 11-7 - HA-3 Video signal flow
Title Board(s)
A, U, HB, B
B, QM,
QM, B, A, C
QM
11. Video Process - HA-3 and RA-5A Chassis
DEFECTIVE CIRCUIT
IS LOCATED ON[B] OR[U]
NO
BOARDS
SEE CONVERGENCE
ADJUSTMENT OVERVIEW
CHAPTER
NEED TO TROUBLESHOOT
NO
THE ANALOG AREA OF
THE SET
TROUBLESHOOT [C] BOARD,
[B] BOARD (IC002, IC006),
OR [A] BOARD (IC3101)
Input
All NTSC inputs
Component Video,
EMI DTV bus
Component Video,
Sync, Menu OSD.
UHF antenna / Memory
Stick
53
41TVP12 1356
Output
Component Video
Component Video, Sync,
Menu OSD.
RGB to CRT cathodes
EMI video bus,
DTV line audio output