Power Supply Unit; Power Supply Voltage Adjustment; Servo; Servo Fg Offset Adjustment - Panasonic DVCPRO AJ-D455P Service Manual

1. POWER SUPPLY UNIT

1-1. Power Supply Voltage
Adjustment
BOARD POWER UNIT
TP TP6 (+3.3V) (on the extension board)
ADJ. VR1201 (+3.3V)
TAPE -----
INPUT -----
MODE
EJECT
M. EQ Digital Voltmeter
+3.35V ± 0.05V
SPEC.
1. Extend the Servo (F7) board with extension
board.
2. Turns ON the power switch, and set to "EJECT"
mode.
3. Connect Digital Voltmeter to TP6 on the
extension board, and adjust VR1201 so that the
DC voltage is in the specification.
<Note>
The VR1102 is for factory, use only.
VR1201 (3.3V)
VR1102 (Factory use only)
Power Unit

2. SERVO

2-1. SERVO FG Offset Adjustment

BOARD SERVO (F7)
TP
-----
ADJ. Service Menu
TAPE -----
INPUT
-----
MODE EJECT
M. EQ -----
SPEC. -----
1. Open the SERVICE MENU. (Refer to SEC1
Service Information.)
2. Select the A00: SERVO ADJUST and press the
"SET" button to open the SERVO ADJUST
MENU.
Select the A01 FG DC ADJ, and Press the "4 4 4 4 "
3.
button continuously until "OK" sign is displayed on
the right side of A01 FG DC ADJ. (It takes 5-10
seconds.) (During automatic adjustment, the reel
motor and brake solenoid are moving.)
4. Close the menu.
<Note>
1. When "NG" sign is displayed or becoming the
"AUTO OFF", do not insert the tape. Check the
mechanism condition and servo circuit.
2. When the parts of mechanism is disassembled
and assembled, before inserting a cassette tape,
implement this adjustment.
3. When repairing or changing the mechanism
(Capstan/Reel), Servo (F7) board, or Syscon (F6)
board, implement this adjustment.
ELE-1