Electrical Adjustments - Sony DNW-A22 Maintenance Manual

Digital videocassette player
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6-4-2. Electrical Adjustments

Adjustment Items
No. Item
0
Preparation
1
All RF system adjustment
Data save
2
EQ RF output level adjustment for BETACAM/BETACAM SP PB
METAL Y
METAL C
OXIDE C
OXIDE Y
Data save
For Maintenance Mode
The operation of the maintenance mode is described as follows:
Entering the maintenance mode
Press S1101(G-1) on the SS-63 board.
Shifting to the next menu
(1) Press the JOG button once to enter the JOG mode.
(2) To set the cursor (* mark) to the desired menu (mode), turn the search dial.
(3) Press the SET button once.
Exiting from the current menu (mode)
Press the MENU button once.
n
To exit the maintenance mode, press the MENU button several times.
Changing the data value (for manual adjustment only)
(1) To set the cursor (* mark) to the item, turn the search dial.
(2) Turn the search dial slowly while pressing the JOG button. = Data value changes.
REVERSE direction:
FORWARD direction: the data value increases (00 follows FF)
n
During adjustment, change the rotational direction of the search dial according to the change of
waveform that is displayed on the measuring equipment.
DNW-A22/A22P
Adjustment point
A17 : A11-A16 ALL ADJUST
A1F : NV-RAM CONTROL
A30 : EQ VR : RF GAIN METAL-Y-A
A30 : EQ VR : RF GAIN METAL-Y-B
A30 : EQ VR : RF GAIN METAL-C-A
A30 : EQ VR : RF GAIN METAL-C-B
A30 : EQ VR : RF GAIN OXIDE-C-A
A30 : EQ VR : RF GAIN OXIDE-C-B
A30 : EQ VR : RF GAIN OXIDE-Y-A
A30 : EQ VR : RF GAIN OXIDE-Y-B
A3F : NV-RAM CONTROL
the data value decreases (FF follows 00)
6-4. EQ-56 Board Replacement
Remarks
Automatically adjustment
TP100/DM-89
TP300/DM-89
TP300/DM-89
TP100/DM-89
6-69

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