Electrical Adjustments - Sony DVP-S9 Service Manual

DVP-S9
Ver 1.6
Note: During diagnostic check, the characters and color bars can be seen
only with the NTSC monitor. Therefore, for diagnostic check, use
the monitor that supports both NTSC and PAL modes
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
3) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A) (dual layer) (PAL)
AUTO SERVO ADJUSTMENT
After parts related to the servo circuit (RF amplifier (IC001), DSP
(IC302), motor driver (IC401), EEPROM (IC101) so on) are re-
placed, re-adjusting the servo circuit is necessary. Select "ALL" at
"DRIVE AUTO ADJUSTMENT" (Refer to page 16 in TEST
MODE) and adjust DVD-SL (single layer), CD and DVD-DL (dual
layer).
VIDEO LEVEL ADJUSTMENT
<Purpose>
This adjustment is made to satisfy the NTSC/PAL standard, and if
not adjusted correctly, the brightness will be too large or small.
Signal Color bars
VIDEO OUT jack
Test point
(75 Ω terminated)
Instrument Oscilloscope
Adjusting element RV501 (MB board)
Specified Value 1.0
Procedure:
1. Press the button to turn the power on, and turn the
I/1
[FUNCTION] knob to select
S9D).
2. Adjust the RV501 on the MB board to attain 1.0
Figure 5-1
CHECKING S VIDEO OUTPUT S-Y
<Purpose>
Check S-terminal video output. If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with a S-
terminal cable.
Signal Color bars
S VIDEO OUT (S-Y) jack
Test point
(75 Ω terminated)
Instrument Oscilloscope
Specified Value 1.0 ± 0.05 Vp-p
22
SECTION 5

ELECTRICAL ADJUSTMENTS

+ 0.04
Vp-p
– 0.02
"DVD" of A/V amplifier (TA-
+ 0.04
Vp-p.
– 0.02
+ 0.04
1.0 Vp-p
– 0.02
Procedure:
1. Press the button to turn the power on, and turn the
I/1
[FUNCTION] knob to select
S9D).
2. Confirm that the S-Y level is 1.0 ± 0.05 Vp-p.
Figure 5-2
CHECKING S VIDEO OUTPUT S-C
<Purpose>
This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light.
Signal Color bars
S VIDEO OUT (S-C) jack
Test point
(75 Ω terminated)
Instrument Oscilloscope
286 ± 30 mVp-p (NTSC)
Specified Value
300 ± 100 mVp-p (PAL)
Procedure:
1. Press the button to turn the power on, and turn the
I/1
[FUNCTION] knob to select
S9D).
2. Confirm that the S-C burst is 286 ± 30 mVp-p (NTSC) or 300
± 100 mVp-p (PAL).
Figure 5-3
Adjustment Location :
– MB Board (Component Side) –
IC202
IC302
"DVD" of A/V amplifier (TA-
1.0 ± 0.05 Vp-p
"DVD" of A/V amplifier (TA-
286 ± 50 mVp-p
(NTSC)
or
300 ± 100 mVp-p
(PAL)
IC103
IC503
RV501
Video
Level
Adjustment