MECHANISM TROUBLESHOOTING GUIDE
E.
In PB mode Tape Presence
not sensed.
NO
Is the Pinch Roller attached Check Alignment positions
to the Capstan Motor Shaft?(page 4-13).
YES
NONO
Does the T/Up Reel turn?Is the Belt ok?Replace the Belt.
YESYES
Check the Clutch and Idler
Does the Capstan Motor turn?
Assembly.
YES
NOIs the voltage supplied to the
Does the Drum Motor turn?
Capstan Motor Vcc1,Vcc2 each?
YESYES
Is the terminal voltage(vctl) ofNO
Are there DPG, DFG pulses?Capstan Motor supplied moreCheck the Servo, Power.
than 4V?
YES
YES
Are the T/Up and Supply Reel
Sensors ok?Replace the Capstan Motor.
YES
NO
Is the Vcc voltage of the DrumNO
Check the Servo, Syscon.Check the Syscon, Circuit.
Motor normal?
YES
NO
Is the terminal voltage(vctl) of the
Check the Syscon, Circuit.Drum Motor more than 4V?
YES
Replace the
Drum Motor.
4-25 |
ACEC
