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4.
Check and Adjustment
1. Focus Offset Check
SG
Player
TP 1
(CN201)
MAIN ASSY
2. Tracking Error Balance Check
¢ Test mode
FOCUS servo — CLOSE
TES 1 DISC
R=35mm
PLAY
Le
START
a
(CND01)
Low pass fitter
:
TR.ER [Ope i S e a
ile ltemia aids t Sie
re
ce
MAIN ASSY
:
:
;
0.001pF =
B teueela 8 777 |
os
fea
*Test mode
Check
&
®None disc
SPDL servo
-+ CLOSE
TRKG servo
— OPEN
Check
»
PD-S904, PD-S904-G
DC voltage
0+50mV
if not — repair
Oscilloscope
DC Mode
V : 5mV/div
H: 10mSec/div
|
]
P
hy
FO. ER
©;
SHES
Se
ahead
ay
ae
10: i: cose
If not -+ repair
acd pee
scilloscope
oO o
DC Mode
:
V : 50mV/div
H : 5mSec/div
33
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