Sony TRINITRON PVM-8041Q Service Manual page 24

PVM-8041Q/8044Q
5. PIN AMP. PIN PHASE, V. ANG, BOW ADJUSTMENTS
(RV508 RV509, RV514, RV515)
Adjust RV514 (V. ANG) and RV515 (BOW) to correct vertical angular
distortion and bow distortion. Adjust RV509 (PIN AMP) and RV508
(PIN PHASE) so that vertical lines become straight.
• V. ANG (RV514)
III
-►
◄-
\\\
BOW (RV515)
(((
-►
4
-
in
-)
PIN AMP (RV509)
) (
4-
( )
PIN PHASE (RV508)
/ \
-►
◄-
\ /
6. H. SIZE ADJUSTMENT (RV511)
(1) AdjustRV511 (H. SIZE) so that the horizontal size becomes 16±
0.2 frames.
7. UNDERSCAN MODE H.SIZE ADJUSTMENT (RV512)
(1) Set U/S (Under Scan) switch to Under mode.
(2) Adjust RV512 (U/H. SIZE) the Under H. SIZE as shown in the
figure.
| HV DELAY ADJUSTMENT (RV831,RV832r|
1. Receive a monoscope signal.
2. • CONTRAST.70%
• BRIGHTNESS.50%
3. Set HV DELAY switch to DELAY mode.
4. H. DELAY Adjustment (RV832)
(1) Connect an oscilloscope to pin-® of IC831.
(2) Adjust RV832 (H. DELAY) to becomes 41 ± 1 |i.sec.
i_n_r
41±1|aSec
5. V. DELAY Adjustment (RV831)
(1) Connect an oscilloscope to pin-® of IC833.
(2) Adjust RV831 to become 8.0 ± 0.4msec as follows.
8.0±0.4mSec
| SHUT-DOWN VOLTAGE ADJUSTMENT (RV1602) |
1. Fully rotate RV1602 in the direction that does not shut-down.
2. Supplya9.4V ^'V voltage to the Cl 602 side of LI 602 on the D
board.
3. Turn AC power switch ON.
4. Rotate D board RV 1602 (SHT DOWN) slowly to the point that
shuts-down the unit.
B+ VOLTAGE DURING DC OPERATE MODE,
ADJUSTMENT (RV1601)_
1. Supply DC12V±0.2V to DC 12V IN connector.
2. Receive a monoscope signal.
3. • CONTRAST.80%
• BRIGHTNESS.50%
4. Connect a digital voltmeter to C1605 + positive side on D board.
5. Adjust RV1601 on the D board for 40.0+0.1 V DC.
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