Sony SRW-5000, Руководство по обслуживанию, Страница: 122 / 438

3-28
SRW-5000/5500
S reel table T reel table
S position sensor
(S cassette position state)
Reel shift motor
L position sensor
[F2]
(REEL SHIFT) key
This menu checks the functions of the reel shift motor and two reel position sensors.
n
The power supply to the motor stops to protect the motor and movable parts when
the driving time of the motor continuously exceeds about six seconds.
Checking
1. Press the
[F2]
(REEL SHIFT) key of the ALT SERVO CHECK menu to
display the REEL SHIFT menu.
2. Press the
[SET]
key.
3. When displaying “S-POSITION” on the color display, press the
[SET]
key.
.
Check to see that an S and T reel tables move from the S position (S cassette
position) to the L position (L cassette position).
.
Check to see that “S-POSITION” changes as follows:
S-POSITION
8
.....
8
L-POSITION
4. When displaying “L-POSITION”, press the
[SET]
key.
.
Check to see that the S and T reel tables move from the L position (L cassette
position) to the S position (S cassette position).
.
Check to see that “L-POSITION” changes as follows:
L-POSITION
8
.....
8
S-POSITION
5. To finish the check, press the
[F10]
(EXIT) key.
6. Press the
[F10]
(EXIT) key while pressing the
[SFT]
(SHIFT) key.
7. Press the
[F10]
(EXIT) key after the message “Check Complete” is displayed to
return to the ALT SERVO CHECK menu.
In case of NG
When the reel table (reel shift motor) operation is defective:
.
Check the mechanical abnormality.
.
Check the reel shift motor driver circuit on the DR-508 board.
.
Check the reel shift motor.
When the super imposed display does not indicate the actual status even through the
reel tables is located in the S cassette or L cassette position:
.
Check the S or T position sensor on the DR-508 board.
.
Check the sensor input port of MPU (IC100 on the DR-508 board).
Locations of S and L Position Sensors and Reel Shift Motor
F1
F2
F3
F4
DIAG
ALT F5 F6 F7 F8 F9 F10
DRUM
MOTOR
REEL
SHIFT
T REEL
BRAKE EXIT
ALT SERVO CHECK MENU
PINCH
PLG
S REEL
BRAKE
CLEAN
PLG
CAP
REEL
REEL SHIFT MOTOR
Press SET key.
ALT SERVO CHECK MENU
PUSH SET (FOR L)
S-POSITION
ALT SERVO CHECK MENU
. . . . .
[SET]
[SET]
ALT SERVO CHECK MENU
PUSH SET (FOR S)
L-POSITION