Toshiba DVR80KF Service Manual page 35

FLOW CHART NO.3
Cassette tape can not be loaded.
When loading a cassette tape, on Pin(100) of IC501,
does the "L" pulse switch to the "H" pulse?
When loading a cassette tape, is the specified voltage
(approximately 13V) outputted to the terminal of the
Loading Motor Unit?
Replace DECK ASSEMBLY (1B1).
FLOW CHART NO.4
Cassette tape is ejected right after the loading.
When loading a cassette tape, on Pin(100) of IC501,
does the "L" pulse switch to the "H" pulse?
When loading a cassette tape, on Pin(4) of IC501,
does the "L" pulse switch to the "H" pulse?
When loading a cassette tape, does the LD-SW
operate normally?
Replace P1(AV ASSEMBLY).
FLOW CHART NO.5
Cassette tape can not be ejected.
When pressing the eject button, does the Capstan
Motor start rotating?
While the Capstan Motor is rotating, is the Takeup
Reel rotating?
While the Takeup Reel is rotating, is the reel pulse
signal inputted to Pin(80) of IC501?
While the reel pulse signal is inputting, is "L" pulse
outputted to Pin(81) of IC501?
Is the specified vo ltage (approximately 13V)
outputted to the terminal of the Lading Motor Unit?
Is the Loading Motor rotating?
Check the Cam Gear or Rack Assembly, etc.,
and replace DECK ASSEMBLY (1B1) if defective.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check the line between the start sensor and Pin(100)
No
of IC501, and replace P1(AV ASSEMBLY) or
P5(BOARD SENSOR) if defective.
No
Replace DECK ASSEMBLY (1B1).
Check the line between the start sensor and Pin(100)
No
of IC501, and replace P1(AV ASSEMBLY) or
P5(BOARD SENSOR)if defective.
No
Check the line between the end sensor and Pin(4)
of IC501, and replace P1(AV ASSEMBLY) if defective.
No
Check the line between the LD-SW(SW507) and Pin(9)
of IC501, and replace P1(AV ASSEMBLY) if defective.
No Refer to "FLOW CHART NO.6 " <The Capstan Motor
does not rotate>.
No
Check the Reel Disc or Clutch Assembly, and replace
DECK ASSEMBLY (1B1). it if defective.
No
Check the line between the Takeup Reel sensor and
Pin(80) of IC501, and replace P1(AV ASSEMBLY) if
defective.
No
Replace P1(AV ASSEMBLY).
No
Replace DECK ASSEMBLY (1B1).
No
Replace DECK ASSEMBLY (1B1).
1-11-12 E9TK3TR