Harman Kardon CDR 20 (serv.man13) Service Manual ▷ View online
-13-
Tray operating is abnormal.
Is threre Tray control signal intput?
(IC501 pin26)
(Tray open/close doesn't work)
YES
•Check the connection of IC409 pin 12.
•Replace the IC409(M62352).
•Check the communication line between
•Replace the IC409(M62352).
•Check the communication line between
IC409 and IC701(MICOM).
•Check the Tray Connector(CN701).
•Check the Motor Line and Motor.
•Check the Motor Line and Motor.
NO
NO
Is three Tray drive voltage output?
(IC501 pin15, 16)
YES
YES
YES
•Check the connection of IC701
pin 25.
•Replace the IC301.
NO
Replace the IC501(BA5983FM).
NO
Is TRAY_MUTE
signal"L"?(IC501 pin20)
When CN701
is open, Is there Tray drive
signal output?
NO
NO
NO
NO
NO
Replace the IC701(MICOM)
NO
Check the connection of IC701
pin 26.
pin 26.
NO
Replace the IC508(BU4053)
YES
-14-
Sled operating is abnormal.
Is there
Sled control signal output?
(IC701 pin 85)
Is there
Sled drive voltage input?
(IC501 pin 23)
Check the connection of IC701
pin 85
pin 85
YES
YES
NO
YES
Check the connection of IC502
pin 17.
Replace the IC502(BA5925)
pin 17.
Replace the IC502(BA5925)
Is there
Sled drive voltage output?
(IC501 pin 17, 18)
Is Act_Mute signal "L"?
(IC501 Pin9)
YES
Is there
HALL/SLDOUT signal input?
(IC701 pin82)
Is there HALL 1
signal input (IC508 pin3)
YES
Is there
SLED FG signal input?
(IC701 pin97)
YES
Replace the IC501(BA5983)
Check the IC502(BA5925)
•Check the Connector(CN501)
•Replace the SLED Motor.
•Replace the SLED Motor.
OK
-15-
NO
NO
•Check the connection of IC201 pin2.
•Replace the IC201(OTI-9790)
•Replace the IC201(OTI-9790)
NO
•Replace the IC509(NJM3404).
NO
•Check the connection of IC301 pin99.
•Replace the IC701(MICOM)
•Replace the IC701(MICOM)
NO
•Check the connection of IC701 pin94.
•Replace the IC701(MICOM)
•Replace the IC701(MICOM)
•Check the connection of IC510 pin19.
•Replace the IC501(BA6664FM)
•Replace the IC501(BA6664FM)
•Check the spindle Connector
(CN502)
•Replace the Spindle Motor.
NO
Spindle operating is abnormal.
Is there Spindle
control signal input?
(IC510 pin 22)
YES
YES
YES
Is there Spindle
control signal output?
(IC509 pin 7)
YES
Is there DMO signal input?
(IC509 pin5)
Is there Spindle
drive voltage output?
(IC510 pin 2,4,7)
Is SPNON signal “H”?
(IC510 pin 23)
YES
YES
Is SBRK signal “L”?
(IC510 pin 18)
NO
Is there
a SPNFG signal input?
(IC701 pin 7, IC201
pin 95)
YES
Replace the IC508(BU4053).
OK
-16-
NO
NO
•Check the connection of IC201 pin207.
•Check the communication line between
•Check the communication line between
IC201 and IC701
•Replace the IC201(OTI-9790)
•Check the connection of IC701
pin26.
•Replace the IC701(MICOM)
NO
Focus Actuator operating
is abnormal
is abnormal
Is there
Focus Search control signal
input? (IC510 pin 3)
YES
YES
YES
Is Act_Mute signal “L”?
(IC501 pin 9)
Replace the IC501(BA5983).
•Check the connection of PN401 Pin 1,4.
•Check the Pick-up Connector(CN401).
•Check the Pick-up Connector(CN401).
Replace the Pick-Up.
Is there Focus Search
drive voltage output?
(IC501 pin 13,14)
NO
NO
Go to “Focus Servo is unstable”
Replace the IC401(CXA2551R).
NO
Spindle control is abnormal 1
(CD-ROM DISC)
Does FOCUS Servo
operate normally?
YES
YES
YES
Is there a output normally?
(IC401 pin 71, 72)
Replace the IC413(EL2245).
Go to “Spindle operating is
abnormal”
abnormal”
Is there RFAC signal input?
(IC201 pin 163)
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