65
DV-38A, DV-S88A, DV-S838A, DV-939A
DVDM ASSY
SIDE A
6. ADJUSTMENT
6.1 ADJUSTMENT ITEMS AND LOCATION
Adjustment Points (PCB Part)
Exchange PCB Assy
Adjustment Items
E
CN104
CN103
1
: XZNRON1
2
: XANRH1
3
: CLMP1
4
: GNDD
5
: Y
6
: GNDD
7
: C
8
: GNDD
9
: V-12D
10 : GNDD
11 : V+12D
12 : GNDD
13 : CR(I/P)
14 : GNDD
15 : CB(I/P)
16 : GNDD
17 : Y(I/P)
18 : GNDD
19 : XCOMP
20 : CLMP2
21 : XANRH2
22 : XANRON2
23 : V_SEL2
24 : V_SEL1
25 : LETTER
26 : SQUEEZ
27 : 525P
28 : NC(VOFF)
CN121
CN112
CN111
CN120
CN512
CN101
CN105
IC1003
IC806
IC712
IC951
IC702
IC601
IC201
IC603
IC251
IC801
IC1001
1
28
VR1001
VR1831
1
2
VC951
3
[Electrical Part]
Y Level Adjustment
1
Component Y Level Adjustment
2
27MHz Clock Adjustment
3
6.2 JIGS AND MEASURING
INSTRUMENTS
6.3 NECESSARY ADJUSTMENT POINTS
Dual-trace oscilloscope
(with delay)
Frequency band 40MHz
Frequency counter
Display digit 8-digit
TV monitor
Screwdriver (small)
CH1
CH2
(X)
(Y)
When
Adjustment Points
Note :
1
,
2
and
3
are adjusted already.
Exchange board
Mechanical
point
Electric
point
DVDM ASSY