Sony BDP-CX7000ES - 400 Blu-ray Disc Mega Changer, Service Manual

Page: 29 / 164

BDP-CX7000ES
29
Holder (table sensor 400)
S tight, screw
(PTTWH3
u
6)
Turn
400D table assy
Fig. 6
4. DISC DETECT SENSOR ADJUSTMENT
This step is following “3. TABLE SENSOR ADJUSTMENT”.
This adjustment is using a long driver from the hole of the chassis
(do not detach the chassis).
Procedure:
1. The connection of the oscilloscope is con fi rmed.
2. It is con fi rmed that there is no disk in the table, press the [
X
]
button, and the table is rotated.
3. It is con fi rmed that the waveforms like Fig. 7.
4. The screw (PTTWH3X6) that is the fi xation of the bracket
(sensor 400) is loosened (the screw is not detached).
5. The bracket is moved right and left (refer to Fig. 8). Wave-
forms relative position changes, and adjusted that waveforms
position becomes a center (refer to Fig. 9).
6. The screw of step 4 is fi xed in the state of step 5.
CHK_DSENS
CHK_HHOUT CH2
CH1
Fig. 7
Holder (table sensor 400)
S tight, screw
(PTTWH3
u
6)
Rotate
400D table assy
Fig. 8
CHK_HHOUT
CHK_DSENS
CH2
CH1
Should be at the center.
Fig. 9
5. SENSOR LEVEL ADJUSTMENT
This step is following “4. DISC DETECT SENSOR ADJUST-
MENT”.
Procedure:
1. RV1001 on the IMD (ES) board (refer to page 26 “1-3. Wiring
for adjustment”) is adjusted so that the width of the CHK_
DSENS signal may increase to twice that of CHK_HHOUT
signal (refer to Fig. 10).
2. Press the [
x
] button, the adjustment is end.
CHK_DSENS
CHK_HHOUT
CH2
CH1
A
A = 2
u
B
B
Fig. 10
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