Pioneer DV-515 Manuale di servizio - Pagina 39
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6. ADJUSTMENT
6.1 ADJUSTMENT ITEMS AND LOCATION
Adjustment Points (PCB Part)
DVDM ASSY
CN9030
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)
13
14
2
1
CN201
CN1030
CN110
6.3 NECESSARY ADJUSTMENT POINTS
When
EXCHANGE PCB ASSY
Exchange board
AVJB ASSY
Exchange board
DVDM ASSY
SIDE A
IC302
1
2
VC301
Mechanical
Electric
Mechanical
Electric
Adjustment Items
[Electrical Part]
16MHz Master Clock Adjustment
1
2
VCO Offset Adjustment
6.2 JIGS AND MEASURING
INSTRUMENTS
CH1
(X)
Dual-trace oscilloscope
(with delay)
Frequency band ≥ 40MHz
Screwdriver (small)
Adjustment Points
point
point
point
point
Note :
and
are adjusted already.
DV-515
CH2
(Y)
Frequency counter
Display digit ≥ 8-digit
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