4-15
DSR-2000A/2000AP
Possible causes Check items and check procedure Related circuit boards and devices
4. Reel motor does not generate the . When the S and T reel brakes are considered When the reel brake is considered to
correct torque. to be the cause of trouble : be the cause of trouble :
. Reel brake has mechanical defect. Check the S and T reel brakes. SV-212 board, reel brake solenoid
. Reel brake solenoid is open. Check that the S and T reel brakes are released.
. Reel brake solenoid drive IC is . When the S and T reel motors are When the S and T reel motor or the
defective. considered to be the cause of trouble : S and T reel FG is considered to be
. Reel motor is defective. Perform the servo adjustment. the cause of trouble :
. Reel motor drive circuit is defective. Confirm that the servo adjustment is completed SV-212 board, S and Treel motor
. Harness is defective. as intended.
5. Abnormality of reel FG Perform the S and T reel adjustment.
. S and T reel motor is defective. Confirm that the reel FG adjustment is completed
. S and T reel FG amp is defective. as intended.
6. Tension regulator is defective. Replace the tension regulator assembly. SV-212 board, MS-64 board,
Confirm that OK appears on display. SE-538 board
7. Cut-and-spliced tape is used.
8. Top detector and end detector are Check the tape top and tape end. When the tape top sensor is
defective. The top and end sensor must turn on and off considered to be the cause of trouble :
correctly. SE-522 board, SV-212 board,
tape top sensor LED
When the tape end sensor is consid
ered to be the cause of trouble :
SE-521 board, SV-212 board,
tape end sensor LED
9. Pinch roller has insufficient pressure Check the pinch roller. SV-212 board, pinch solenoid
against capstan. Pinch roller must be pressed against the capstan
. Pinch roller has mechanical defect. shaft correctly.
. Pinch solenoid is open.
. Pinch solenoid drive IC is defective.
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