Read Sony XVM-6100 / XVM-61EX Service Manual online
– 5 –
– 6 –
V COM Adjustment
Procedure :
1. Connect the oscilloscope to CL44 on the monitor main board.
2. Adjust RV210 (V COM AMP) & RV211 (V COM BIAS) so
2. Adjust RV210 (V COM AMP) & RV211 (V COM BIAS) so
that the output waveform is within the standards.
3. Repeat step 2 until the standards are satisfied.
Standard values :
A : Adjust RV210 so the value is 4.9
±
0.1 Vp-p.
B : Adjust RV211 so the value is 5.1
±
0.1 V.
A
B
0 V
Connection points :
Monitor main board
RV207
R DRIVE
ADJ
RV208
COM DRIVE
ADJ
RV213
OFFSET
ADJ
RV212
COM CUT
ADJ
RV202
R CUT
R CUT
ADJ
RV209
B DRIVE ADJ
B DRIVE ADJ
RV204
B CUT ADJ
B CUT ADJ
RV210
V COM AMP ADJ
V COM AMP ADJ
RV211
V COM BIAS ADJ
V COM BIAS ADJ
RV401
+5V ADJ
+5V ADJ
RV601
+9V ADJ
+9V ADJ
– MONITOR MAIN BOARD (COMPONENT SIDE) –
– MONITOR MAIN BOARD (CONDUCTOR SIDE) –
CL44
CL43
CL41
CL66
CL42
CL151
Alignment points :
Monitor main board
VIDEO SELECTOR SECTION (XVM-6100 only)
NTSC Adjustment
Procedure :
1. Input the color bar signal from NTSC color bar generator on
the AV selector board.
2. Connect the frequency counter to TP61 (SC OUT).
3. Confirm reading the frequency counter is 3.579545 MHz.
4. Connect the oscilloscope to CN3
3. Confirm reading the frequency counter is 3.579545 MHz.
4. Connect the oscilloscope to CN3
!£ pin (B OUT).
5. Adjust RV1 (Y.C ADJ) so that white peak (100% white) is
1.00 Vp-p.
6. Adjust RV2 (HUE ADJ) and RV3 (COL ADJ) so that amplitude
of each color is same (A=B=C=D).
PAL Adjustment
Procedure :
1. Input the color bar signal from PAL color bar generator on the
AV selector board.
2. Connect the frequency counter to TP61 (SC OUT).
3. Confirm reading the frequency counter is 4.433619 MHz.
4. Connect the digital voltmeter to IC10
3. Confirm reading the frequency counter is 4.433619 MHz.
4. Connect the digital voltmeter to IC10
!¢ pin (DLA BIAS).
5. Adjust RV5 (DLA BIA ADJ) so that reading the digital voltmeter
is 2.3 V.
6. Adjust RV1 (Y.C ADJ) so that white peak (100% white) is
1.00 Vp-p.
7. Adjust RV2 (HUE ADJ) and RV3 (COL ADJ) so that amplitude
of each color is same (A=B=C=D).
Alignment points :
AV selector board
A
B
C
D
1 Vp-p
SYNC
OUT
B OUT
A
B
C
D
1 Vp-p
SYNC
OUT
B OUT
– AV SELECTOR BOARD (COMPONENT SIDE) –
– AV SELECTOR BOARD (CONDUCTOR SIDE) –
RV1
Y.C ADJ
Y.C ADJ
RV3
COL ADJ
COL ADJ
RV4
APC ADJ
APC ADJ
RV2
HUE ADJ
HUE ADJ
RV5
DLA BIA ADJ
DLA BIA ADJ
IC10
CN3
TP61
(SC OUT)
Connection points :
AV selector board
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