Da(Dc - Sony Multiscan CPD-1404S Service Manual

CPD-1404S
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H fo ADJUSTMENT (RV30 1. RV3_02)
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(57 kHz)
1. Receive a signal of 57 kHz.
2. Short circuit between pin
CD
and pin @ of TP301
with a jumper wire.
3. Connect a frequency counter across collector of
0402 and ground.
4. Adjust RV301 (FH MIN) 31.47 Hz ± 500 Hz
on the frequency counter.
(31 kHz)
1. Receive a signal of 31 kHz.
2. Short circuit between pin
CD
and pin @ of TP301
with a jumper wire.
3. Connect a frequency counter across collector of
0402 and ground.
4. Adjust RV302 (FH MIN) for 31.47 kHz ±500
Hz on the frequency counter.
5-2. D AND DA (DC-1) BOARD ADJUSTMENT
o
RV40,
!H-POS']
D board
RV404 RV203
!H-sHIFTI Iv-posil
IH.
POSITION (RV401. SW401)
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RVZOI
!V-LINE]
~
1. Input a cross·hatch signal of 48 kHz.
RV20~
!aRIGHTI
2. Display a back·raster on the screen with G2
YR.
3. Adjust RV401 (H. POSI) so that the back-raster
position to come centre.
4. In case of the back·raster is not move till centre.
using SW401 (H.
pas
I TAP SW).
Iv.
LINE. V. SIZE. V. POSI (RV201. RV202. RV203)
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, . Input a cross·hatch signal of 48 kHz.
2. Adjust RV203 (V. POSI) so that the vertical
position to come centre.
3. Adjust vertical linearity with RV201 (V. LINE).
4. Adjust vertical size with RV202 (V. SIZE).
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H. SIZE. LIMITER (RV403. RV31 2)
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1. Input a cross-hatch signal of 48 kHz.
2. Rotate RV403 (H. SIZE) from maximum to
minimum. and then observe the local strain.
3. In case of a local strain occuring on the screen.
adjust them with RV312 (H. S LIMIT) on DA
(DC-1) board.
4. Input a cross-hatch signal of 31 kHz (48 LINE).
5. Switch over AUTO SIZE SW to ADJ position.
6. Turn RV403 (H. SIZE) from maximum to minimum.
and then observe the local strain.
7. In case of a local strain occuring on the screen.
adjust them with RV312 (H. S LIMIT) on DA
(DC-') board.
148 kHz. DEFLECTION SYSTEM ADJUSTMENT
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*
Input a cross-hatch signal of 48 kHz as following
adjustment.
-20-
• H. SIZE (RV403)
Adjust RV403 (H. SIZE) on 0 board so that the
horizontal size to become 240 ± 2.0mm.
t
180 ± 1.5mm
•
__ 240
±
2.0mm - -
• PARA CORE (RV308)
Adjust direct association and parallelogram strain
with RV308 (PARA CORE) on DA (DC-1)
board.
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