Video Process (Ha-3 & Ra-5A Chassis) - Sony KD-34XBR2 Training Manual

Video Process (HA-3 & RA-5A Chassis)
The bulk of the video process is the same for the HA-3 and RA5A chassis. The differences are the connector
numbers on the A boards. Therefore this video process section applies to both chassis and contains:
•
Overall Video Block
•
Overall Sync Path
•
Board Replacement Repairs
•
Component Level Repair
Sony' s direct view HA-3 TV chassis drives a 16x9 flat-faced picture tube. The acceptable inputs for this chassis
are listed in Chart 11-1. Refer to Figure 11-1 for the video signal flow that follows.
TV Input
DTV TV stations
Analog TV stations
Video 1-4
Video 5-6
A general description of the video flow by board is explained for each of the four input groups.
CN8601/
CN005
NTSC
SUB
U BD.
PATH
NTSC
OR
HD
CN4001/
INPUT
CN003
VIDEO 5,6
NTSC
VIDEO 1,3,4
VIDEO 2
CN008/
HB BD.
CN1200
Chart 11-1 – HA-3 Input
Air Channels 1-99 in 18 ATSC digital formats
Air (ch 2-69) or cable (ch 1-125) in the NTSC analog format
S or composite video in standard 480i format (525 line)
Y, Pb, Pr component video in 480i, 480p, 720p, or 1080i format
IC7205, IC7603
DTV TUNER
MAIN SIGNAL PATH
AND PROCESS
NTSC INPUT/ TWIN
IC8601
IC8703, IC8902
MID PROCESS
MN-SB-
SW.
A1-3 A9
IC200
COMPONENT
INTERFACE I/F
MAIN SW.
IC201 SUB SW.
IC201,IC202,
SUB
IC204,IC207
IC401
ANALOG VIDEO
A/V
PROCESSING
SW.
MAIN
*
SERVICE MODE
ENABLED PATH
FIGURE 11-1 - VIDEO BLOCK - HA-3 CHASSIS
11. Video Process - HA-3 and RA-5A Chassis
Acceptable Input
QM BD.
IC8801
OSD
IC7806,
IC7807
DRC
NTSC
PROCESS
MAIN
PATH
A5-7 A3-5 A7-9
MAIN
OSD
HD
Q9, Q11, Q13
VIDEO
*
5,6
IC205
MAIN MICRO
IC002
SW.
B BD.
40
IC9001-3
OUTPUTS
CN8801
C OSD
MIXER
11
IC3101
OSD
13
IC001
DRIVE
C
15
17
CN001/
CN3020
B
ANALOG
6
TUNERS
B
9
CN002/
CN3022
C BD.
RGB
CRT
1, 3, 5
CN9001/
CN3101
HD
(33.75kHz)
Y/C
CRT
VD (60Hz)
A BD.
7TVP12 1324 9/4/01