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SERVICE CONTROL ADJUSTMENTS
Power & Deflection Board
C633
K6D
L633
Q633
POWER
Q634
DRIVE
POWER
SWITCH
Q632
K4H
R426
L461
C491
C402
Q402
T401
Q403
HORIZ.
T402
OUTPUT
FLYBACK
HORIZ DRIVE
TRANS.
TRANS.
C481
K4C
FOCUS
Sub Video Board
TP1311
C2512
C2511
IC2501
BLACK LEVEL
ADJ.
K20J
K6G
T611
C618
CONVERTER
C624
TRANS.
Q615
C652
C616
IC611
Q631
Q616
IC423
C506
IC501
Q461
VERT.
L425
DEF.
DOWN
L704
L502
C504
K4A
C521
C531
Q531
Q462
Q461
IC531
K4S
L462
C482
C486
SCREEN
TP1310
VR1301
VR1302
C1324
IC1303
SUB CPU
IC1301
X1301
C1331
C1335
IC1302
C1301
C1318
K20H
C621
K6A
IC651
Q614
C651
V-CENTRE ADJUSTMENT
1. Receive circular pattern signal.
KB4
2. Adjust V-centre by using SW501.
Q505
Q501
UP
SW501
V-CENTRE
C512
K4E
FOCUS ADJUSTMENT
By using FOCUS VR, adjust focus control for well
C546
scanning lines.
Q542
HIGH VOLTAGE
Q541
C543
C542
[HIGH VOLTAGE ADJUSTMENT]
IC481
1. Receive circular pattern signal.
2. Set brightness to centre and contrast to
maximum.
3. Connect a high voltage meter to CRT anode.
4. Confirm high voltage to be 30.5 ± 1 KV, and less
than 34.0KV at 0 beam current.
H-BLANKING ADJUSTMENT
NOTE: This must be done after picture size
1. Receive circular pattern signal.
2. Set screen mode to NORMAL.
3. Adjust right and left blanking width to be equal by
using VR1301(right) and VR1302(left).
-14-
adjustment.
F2HT
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