Sony SRW-5000 Maintenance Manual page 122

[F2] (REEL SHIFT) key
This menu checks the functions of the reel shift motor and two reel position sensors.
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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).
S reel table
3-28
L position sensor S position sensor
Locations of S and L Position Sensors and Reel Shift Motor
F1
F2
F3
F4
DIAG
ALT
T reel table
Reel shift motor
(S cassette position state)
DRUM ALT SERVO CHECK MENU
MOTOR
REEL SHIFT MOTOR
REEL
SHIFT
Press SET key.
PINCH
PLG
S REEL
BRAKE
T REEL CLEAN CAP EXIT
BRAKE PLG REEL
F5 F6 F7 F8 F9 F10
[SET]
ALT SERVO CHECK MENU
PUSH SET (FOR L)
S-POSITION
[SET]
ALT SERVO CHECK MENU
. . . . .
ALT SERVO CHECK MENU
PUSH SET (FOR S)
L-POSITION
SRW-5000/5500