Sony DNW-A100 Maintenance Manual page 109

1. Y Adjustment
1. Set RV502/DM-89(E-3) to the specified position as
shown figure below.
2. Connect and set the oscilloscope as follows:
CH-1: TP4/DM-89(E-1), DC 1 V/DIV
GND: E702/DM-89(D-1)
CH-2: TP501/DM-89(F-4), AC 1 V/DIV
GND: E501/DM-89(E-3)
TIME: 5 ms/DIV
TRIG: CH-1, _ slope
2. During play back the alignment tape in PLAY mode,
adjust the level difference between the fc and 2fc on
the spectrum analyzer.
PB portion: Flat field signal (24:00 to 26:00) of
CR5-1B (NTSC) / CR5-1B PS (PAL)
Adj. point: 1RV502/DM-89(E-3)
Specification: Maximize the level difference A.
(Minimize the fc.)
NTSC model
A
PAL model
A
4. Stop the playback of the alignment tape.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
2fc
fc
7.6 MHz 15.3 MHz
2fc
fc
8.9 MHz 17.7 MHz
3-8. Analog Betacam PB System Alignment
3-8-10. Demodulator Limiter Balance Adjustment
2. C Adjustment
1. Connect and set the oscilloscope as follows:
CH-1: TP8/DM-89(C-1), AC 200 mV/DIV
GND: E702/DM-89(D-1)
TIME: 10 us/DIV
2. During play back the alignment tape in PLAY mode,
adjust the moiré of specified part on the oscilloscope.
PB portion: Flat filed signal (24:00 to 26:00) of
CR5-1B (NTSC) / CR5-1B PS (PAL)
Adj. point: 1RV702/DM-89(A-4)
Specification: Minimize the moiré of specified part.
Oscilloscope
3. Stop the playback of the alignment tape.
n
It is not necessary to eject the alignment tape when
perform subsequent "3-8-11. Non-Liner Output Level
Adjustment".
A B C
RV704 RV703
D902
ON
E303 TP7 TP6
S901
OFF
E901
TP8
TP704
TP702
RV702
TP701
TP305
RV701 TP700 TP306
RV401 TP208
RV301 RV302 RV303 RV304
RV402
S302
RV406
S301
TEST
NOR
RV407
E302
TEST NOR
TP303
TP304 RV405
TP403
TP404
TP302
TP300
E301
DM-89 Board (Side A)
Minimize the moiré
D DM-89 E F G
OFF ON
RV504 E105
TP5 S501 TP3 TP2 TP1 RV503
A No. LOTNO, S NO,
E702 TP4
TP705
TP505
TP503 TP504
E701
E501
TP502
TP703
RV502
RV501
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
3-73
1
2
3
4
5
6
7