Sony DNW-A100 Maintenance Manual page 94

3-8. Analog Betacam PB System Alignment
3-8-5. Cosine Equalizer Adjustment
Main adjustment / METAL Y
7. Connect the oscilloscope's CH-2 input to TP3/DM-89
(E-1). GND: E702/DM-89(D-1)
8. Adjust the level at 12 MHz using 2 MHz as the
reference.
Adj. point: A33 : DM VR 2 : MAIN METAL-Y-A
Specification: NTSC model: B = +8.0 ± 0.5 dB
PAL model: B = +3.5 ± 0.5 dB
NTSC model
[dB]
B
0
2
PAL model
[dB]
B
0
2
9. Set the data of "MAIN METAL-Y-B" in A33 : DM
VR 2 to the identical data value as "MAIN METAL-
Y-A".
10. To exit A33 : DM VR 2, press the MENU button once.
3-58
A(*)MAG: 1 dB
12 [MHz]
A(*)MAG: 1 dB
12 [MHz]
Sub adjustment / METAL Y
11. Enter A34 : DM VR 3.
12. For NTSC model:
Check that the data of "SUB METAL-Y-A" and
"SUB METAL-Y-B" in A34 : DM VR 3 are AF.
(If not, set them to AF.)
For PAL model:
(1) Connect the oscilloscope's CH-2 input to TP2/
DM-89(E-1). GND: E702/DM-89(D-1)
(2) Adjust the level at 12 MHz using 2 MHz as the
reference.
Adj. point: A34 : DM VR 3 : SUB METAL-Y-A
Specification: C = +16.5 ± 1.0 dB
[dB]
C
0
2
(3) Set the data of "SUB METAL-Y-B" in A34 : DM
VR 3 to the identical data value as "SUB METAL-
Y-A".
13. To exit A34 : DM VR 3, press the MENU button once.
14. Disconnect the shorting clip from TP4/DM-89(E-1).
A B C
RV704 RV703
D902
ON
E303 TP8 TP6
S901
OFF
TP7 TP5
E901
TP704
TP702
RV301 RV302
TP701
RV702
TP305
RV701 TP700 TP306
RV401 TP208
RV303 RV304
RV402
S302
RV406
S301
TEST
NOR
RV407
TEST NOR
E302
TP303
TP304 RV405
TP403
TP404
TP302
TP300
E301
DM-89 Board (Side A)
A(*)MAG: 2 dB
12 [MHz]
D DM-89 E F G
OFF ON
RV504 E105
S501 TP3 TP1 RV503
A No. LOTNO, S NO,
E702 TP4 TP2
TP3
TP705
TP505
TP503 TP504
E701
TP502
TP703 E501
RV501 RV502
TP501
RV507 RV506
TP500
TP105
TP106
TP506
RV305 RV105
RV102 RV104
RV306 RV106
RV107
RV307
RV101 RV103
RV202
RV201
RV308
RV108
E104
E102
TP104
S102
TP103
TEST NOR
S101
RV211 RV212
TP102
TEST NOR
E103
TP202
RV205
TP204
TP100
TP203
E101
E902
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
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