Sony DNW-A75 Maintenance Manual page 77

ERROR-04 REEL TROUBLE - 4
(REEL TROUBLE)
Description: Abnormal tape transport speed was detected in the FF or REW mode.
Detecting condition: When the tape speed calculated from the supply reel FG and take-up reel FG is
under a half of the specified tape speed continuously for more than four seconds.
Sub error message: None
. Cassette compartment trouble or installation defect
Possible causes:
. Clearance adjustment defect of supply or take-up reel FG detection block
. Supply or take-up reel motor trouble
. Supply or take-up reel FG waveform shaper circuit (MS-58 board) trouble
. Supply or take-up reel motor drive circuit (DR-315 board) trouble
. Servo adjustment defect on supply or take-up reel
. Supply or take-up reel brake trouble
. Supply or take-up reel brake solenoid drive circuit (MS-58 board) trouble
. Harness disconnection
. Reel table height adjustment defect
. Tape path and drum troubles
. Tape abnormality (The winding state has a problem.)
Protecting operation: Stops the tape transport and enters the rest state.
ERROR-05 REEL TROUBLE - 5
(REEL TROUBLE)
Description: Abnormal supply reel or take-up reel operation was detected in a diagnosis
during cassette insertion.
Detecting conditions: 1) When the supply reel FG or take-up reel FG count is less than the specified
2) When the supply reel FG or take-up reel FG count is more than the specified
Sub error message: None
Possible causes: . Supply or take-up reel FG sensor (SE-461 board) trouble or clearance
. Supply or take-up reel FG waveform shaper circuit (MS-58 board) trouble
. Supply or take-up reel motor drive circuit (DR-315 board) trouble
. Servo adjustment defect on supply or take-up reel
. Supply or take-up reel brake trouble
. Supply or take-up reel brake solenoid drive circuit (MS-58 board) trouble
. Harness disconnection
Protecting operation: Ejects the cassette.
DNW-A75/A75P
* The reel did not rotate because the cassette was lifted-up from the speci-
fied position.
value with the reel rotated.
value with the reel stopped.
adjustment defect
3-2. Details of Error Messages
3-7