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DVD-V555
QQ
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6. ADJUSTMENT
6.1 ADJUSTMENT ITEMS AND LOCATION
Adjustment Points (PCB Part)
DVDM ASSY
CN9032
CN9020
1
VC901
IC904
5
1
IC801
MB86371C
CN201
1, 2
: Focus Error
3, 4
: GND
5, 6
: RF
7
: S REQ
8
: 3.3V
9,10
: Tracking Error
CN120
11,12 : VREF (Approx. 2.5V)
13
: VCO DR
14
: Focus Drive(DSP output)
14
13
1
2
CN201
TE
L 13942296513
CN1030
CN110
6.2 JIGS AND MEASURING INSTRUMENTS
CH1
CH2
(X)
(Y)
Dual-trace oscilloscope
(with delay)
Frequency band ≥ 40MHz
www
.
Screwdriver (small)
42
http://www.xiaoyu163.com
SIDE A
IC302
1
2
VC301
Frequency counter
Display digit ≥ 8-digit
x
ao
u163
y
i
TV monitor
http://www.xiaoyu163.com
2 9
8
Adjustment Items
[Electrical Part]
16MHz Master Clock Adjustment
1
2
VCO Offset Adjustment
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
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