|
|
|
Who's Online
There currently are 5564 guests and
2 members online. |
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
I'm very happy that you all are performing an incredible good job. Furthermore what you did is very useful for all people as me that have electronics as an hobby.Thank you!!!!!
;
Manual found fast and good quality, very helpfull service
;
8-17-12 Been using the sight for about 6 months. Fast Downloads and top quality
Manuels !
 ;
Everything was great, the manual, the response time, the simplicity of the order, and the
Price. The only thing that I could possible say on a negative note would be that the manual I ordered was more for a service tech. There were a lot of schematic diagrams that didn't help me solve the problem. However I would order again and recommend the web sight to others.
;
I'd been looking for this manual for awhile. Exactly what I needed - and at an excellant price. Thanks!
NO.14 CAPSTAN TROUBLESHOOTING FLOW CHART NO.16 DRUM MOTOR TROUBLESHOOTING(2)
drum runs only for a few seconds. The capstan motor fails to run.
Replace IC706.
Check IC701. NO DC given out pin(29) of IC701?
Is the voltage more than about 2.6V NO
Is drum PG signal given out from the NO Check peripheral circuit of pins (4), (5) pin (7) IC706? and (6) of IC706.
YES
Is the supply voltage of 5V fed to NO Check PC 5V line. YES YES pin(8) of AC connector?
Check drum motor.
YES
Is voltage more than 2.6V DC the AC connector NO Is drum PG signal fed to pin(66) Check line between pin(7) of IC706 sent in pin(4) AC connector? pin(29) IC701? IC701? and pin(66) of IC701.
YES YES
voltage pin(3) AC Check line between the pin(92) of Is head switching pulse sent out from NO the pin(23) of IC701? Check MOTOR Vcc line and motor
YES
Check IC701. connector 1.6~2.7V? IC701 and pin(3) of AC connector.
YES
Is the supply voltage of 12V/20V fed NO voltage selector circuit. Replace IC701. to pin(5) of AC connector? (Q995, 996)
YES
FLOW CHART NO.17 HEAD SWITCHING PULSE TROUBLESHOOTING.
No head switching pulse.
Replace capstan motor.
41
Is the drum motor rotating? NO IC701, respectively? YES
Check PC 5V line.
FLOW CHART NO.15 DRUM MOTOR TROUBLESHOOTING(1)
See FLOW CHART NO.15, 16 (DRUM MOTOR TROUBLESHOOTING(1), (2))
YES
The drum motor fails to run.
Is the voltage more than about 2.6V NO Is the PG signal and drum FG DC given out pin(46) of IC701? Replace IC701. signal present on pins(66) and (65) of
Check IC701. YES
Is the supply voltage of 5V fed to pin
NO NO D-FG
(3) of IC706?
YES about 5Vp-p
DC given out pin(2) of IC706? and pin(2) of IC706.
NO Is the voltage more than about 2.6V Check line between pin(46) of IC701 D-PG
YES about 5Vp-p
Check M 12V line. pin(21) of IC706? Check line between IC706 and
NO Is the supply voltage of 12V fed to
Are the PG signal and drum
YES FG signal present on pins (7), (8) NO
YES of IC706?
IC701.
VC-SH970W VC-SH990W
Replace drum motor.
Check peripheral circuit of IC706.
|
|
|
> |
|
