Sony Betacam SX DNW-A100 Maintenance Manual page 273

(5) Change the connection of the oscilloscope as follows:
CH-1: TP300/DM-89(B-7), GND: E301/DM-89(B-7)
Trigger: TP5/DM-89(D-1), GND: E702/DM-89(D-1)
(6) METAL C adjustment
Playback the flat field signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and
perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS)
n
Adjust respectively for C-A and C-B channels.
When watching the C-A channel, set the trigger of oscilloscope to _ slope.
When watching the C-B channel, set to + slope.
Adjustment points: C-A channel:
C-B channel:
Specifications (C-A and C-B channels): B = 380 ± 20 mV p-p
(7) Eject the alignment tape CR5-1B/CR5-1B PS.
(8) OXIDE C adjustment
Playback the 75% color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A
PS, and perform the adjustment.
(DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS)
n
Adjust respectively for C-A and C-B channels.
When watching the C-A channel, set the trigger of oscilloscope to _ slope.
When watching the C-B channel, set to + slope.
Adjustment points: C-A channel:
C-B channel:
Specifications (C-A and C-B channels): C = 250 ± 20 mV p-p
(9) Stop the playback of the alignment tape CR5-2A/CR5-2A PS.
(10) Change the connection of the oscilloscope as follows:
CH-1: TP100/DM-89(F-7), GND: E101/DM-89(F-7)
Trigger: TP4/DM-89(E-1), GND: E702/DM-89(D-1)
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
A30 : EQ VR : RF GAIN METAL-C-A
A30 : EQ VR : RF GAIN METAL-C-B
Center of V period
B
A30 : EQ VR : RF GAIN OXIDE-C-A
A30 : EQ VR : RF GAIN OXIDE-C-B
Center of V period
C
6-4. DM-89 Board Replacement
6-35