Sony Betacam SX DNW-A100 Maintenance Manual page 318

Digital video hybrid recorder
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6-5. EQ-56 Board Replacement
(23) Change the connection of the oscilloscope as follows:
CH-1: TP100/DM-89(F-7), GND: E101/DM-89(F-7)
CH-2:
TP4/DM-89(E-1), GND: E702/DM-89(D-1)
(24) Playback the 75 % color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A
PS. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS)
(25) To operate the maintenance mode, press the MENU button once.
(26) Perform the OXIDE Y adjustment.
n
Adjust respectively for Y-A and Y-B channels.
When watching the Y-A channel, set the trigger of oscilloscope to _ slope.
When watching the Y-B channel, set to + slope.
Adjustment points: Y-A channel:
Y-B channel:
Specifications (Y-A and Y-B channels): D = 250 ± 20 mV p-p
(27) To perform the tape operation, press the SET button once.
(28) Stop the playback of the alignment tape CR5-2A/CR5-2A PS, and eject it.
(29) To operate the maintenance mode, press the MENU button once.
(30) To exit A30 : EQ VR, press the MENU button once again.
(31) Data save
Enter A3F : NV-RAM CONTROL, then execute "SAVE ALL ADJUST DATA".
(32) Check that the message "Save Complete" is displayed on the video monitor.
(33) To exit the maintenance mode, press the MENU button four times.
A
B
C
RV704
RV703
D902
ON
E303
TP8
TP7
TP6
TP5
S901
OFF
E901
TP705
TP704
TP703
TP702
TP701
RV702
TP305
TP700
TP306
RV701
TP208
RV401
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)
6-80
A30 : EQ VR : RF GAIN OXIDE-Y-A
A30 : EQ VR : RF GAIN OXIDE-Y-B
D
D
DM-89
E
F
G
OFF
ON
RV504
E105
S501
TP3
TP2
TP1
RV503
A No.
LOTNO,
S NO,
TP4
E702
TP505
TP503
TP504
E701
TP502
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
NOR
TEST
E103
TP202
RV205
TP204
TP100
E101
TP203
E902
Center of V period
1
2
3
4
5
6
7
DNW-A100/A50/A45
DNW-A100P/A50P/A45P

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