11-18
HDW-750/750CE V1
11-3-3. SERVO System Adjustment Mode
(A0 : SERVO ADJUST)
This mode adjusts the servo system automatically.
The adjustment data obtained by this adjustment is automatically
saved in the servo system EEPROM (IC403/MDC-13 board) upon
completion of this adjustment.
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.
Before starting the servo system adjustment, be sure to set the VTR
SAVE/STBY switch on the inside panel to the STBY position.
.
When an adjustment fails, the message “INCOMPLETE” appears
on the menu display. The following two causes are possible.
1.
The adjustment itself has not completed to its end.
2.
The adjustment ended successfully but the data failed to be
saved in the servo system EEPROM.
To determine which of the above two causes applies, execute “A000
: NV-RAM INITIALIZE” to check if communication with the servo
system EEPROM is faulty or not. If “A000 : NV-RAM INITIAL-
IZE” ends with the message “INCOMPLETE”, communication with
the servo system EEPROM may have an error and the data saving
operation has ended with fail.
The SERVO system adjustment is required when the following boards
and the parts are replaced.
When the following boards or parts are replaced, execute the corre-
sponding adjustment item as shown below.
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When both A001 : CAPSTAN FG DUTY and A002 : CAPSTAN DE-
LAY must be executed, execute them in the order of A001
→
A002.
Replaced board/part
Adjustment item to be executed
MDR-14 board
A003 : DRUM PHASE
Upper drum assembly
A003 : DRUM PHASE
Drum assembly
A003 : DRUM PHASE
S-tension regulator band assembly
A002 : CAPSTAN DELAY
T-tension regulator band assembly
A002 : CAPSTAN DELAY
Timing belt
A002 : CAPSTAN DELAY
S/T idler assembly
A002 : CAPSTAN DELAY
S-soft-brake assembly
A002 : CAPSTAN DELAY
T-soft brake arm
A002 : CAPSTAN DELAY
S-tension regulator assembly
A002 : CAPSTAN DELAY
T-tension regulator assembly
A002 : CAPSTAN DELAY
Reel table
A002 : CAPSTAN DELAY
Reel drive gear assembly
A002 : CAPSTAN DELAY
Pinch arm assembly
A002 : CAPSTAN DELAY
MDC-13 board
A001 : CAPSTAN FG DUTY
A002 : CAPSTAN DELAY
A003 : DRUM PHASE
Capstan motor
A001 : CAPSTAN FG DUTY
A002 : CAPSTAN DELAY
11-3. Contents of Menus
