DOWNLOAD Harman Kardon CDR 20 (serv.man13) Service Manual ↓ Size: 9 MB | Pages: 74 in PDF or view online for FREE

Model
CDR 20 (serv.man13)
Pages
74
Size
9 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cdr-20-sm13.pdf
Date
PREV: Harman Kardon CDR 20 (serv.man12) User Manual / Operation Manual

Harman Kardon CDR 20 (serv.man13) Service Manual ▷ View online

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TROUBLESHOOTING GUIDE FOR CD-RW BOARD
Reset or Power Check.
•Is the Pin 1, 3 of PN105 5V?
•Is the Pin 5 of PN105 12V?
Does the pin1
of IC101 change 0V to 5V at the power
supply initial input mode?
• Check the PN105.
• Check the SMPS board.
YES
YES
NO
• Check the IC101(RESET IC).
• Check the IC301(HD64F3062),
IC301(XC10TQ80)
NO
Are the X701 and X301 oscillating?
YES
•Is the pin4 of IC103 3.9V?
•Is the Pin32 of IC401 2.0V?
•Is the Pin4 of IC102 3.3V?
YES
•Is the Pin7 of IC514 2.5V?
•Is the pin1 and 2 of IC514 2.0V?
YES
•Is the pin1 of IC511 8.0V?
•Is the pin1 of IC512 8.0V?
YES
•Check the X701, X301.
•Check the IC701, IC301.
NO
•Check the IC103(BA3939).
•Check the IC401(CXA2551R).
•Check the IC102(BA033S).
NO
Check the IC514(NJM3414).
NO
•Check the IC511(NJM7808).
•Check the IC512(NJM7808).
NO
OK
NO
After eject tray, Inset CD-R Blank
Disc and reloading.
NO
Does Disc stop?
Go to "Spindle control is abnormal 3"
NO
NO
YES
Does Disc rotate
continuously as Disc recognition
is abnormal?
Go to "Disc recognition is abnormal"
YES
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System Check.
Load tray without inserting disc.
Does Tray operate normally?
Go to "Tray operating is abnormal"
YES
NO
Does Pick-up move to inside?
Go to "Sled operating is abnormal"
YES
NO
Does Spindle Motor rotate in a moment?
Go to "Spindle opreating is
abnormal"
YES
NO
Does Lens move Up/Down?
YES
Does Laser turn on?
Go to "Focus Actuator operating is
abnormal"
YES
NO
Go to "Laser is abnormal"
NO
OK
After eject tray, Inset CD Disc and reloading.
Does Disc stop?
Go to "Spindle control is abnormal 1"
NO
YES
Does Disc rotate
continuously as Disc recognition
is abnormal?
Go to "Spindle control is abnormal 2"
YES
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