Harman Kardon DVD 50 (serv.man2) Service Manual ▷ View online
24
B. Audio abnormal
D. Open/Close abnormal
Check the
connection of CONP3901.
Check IC301 Pins 93, 94.
Check Audio jack.
YES (If OK)
YES
NO
NO
YES
YES (If OK)
YES
YES (If OK)
YES (If OK)
YES (If OK)
Refer to Audio part.
Refer to Decoder part.
Refer to PANTERA part.
Replace B/D.
Check Front.
Reconnect it.
Refer to SERVO part.
Check the connection of MD.
AUDIO ABNORMAL
OPEN/CLOSE ABNORMAL
C. Video abnormal
Check Video jack.
YES (If OK)
YES (If OK)
YES (If OK)
Refer to Video part.
Refer to PANTERA part.
Replace B/D.
VIDEO ABNORMAL
25
E. Picture abnormal
Check the disc.
If OK
YES (If OK)
YES (If OK)
Refer to Servo part
Check DSP
Check PANTERA
Replace B/D
PICTURE ABNORMAL
F. Disc Error
Check Disc
YES (If OK)
YES (If OK)
Refer to Servo part
Replace B/D
DISC ERROR
26
Power is on
Does H/K Logo appear
on the screen?
Does the
moving picture of the DVD Disc
play on the screen
normally?
Is PANTERA
data signal normal?
Is error signal normal?
Is PANTERA data
signal normal?
Is Clock normal?
Does the audio
sound output from PANTERA
decoder?
Does the
moving picture of the video
CD play on the screen
normally?
Does the audio sound
output normally?
END
Check power & clock.
Check CD/DVD DSP output
signal.
Check CD/DVD DSP output
signal.
Check CD/DVD DSP output
signal.
Check clock signal
Check clock signal
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
OK
NO
NO
NO
NO
NO
3. PANTERA Circuit
_
OPTION
_
If included VCD function.
27
NO
NO
NO
START
Does remote control
work normally?
Do all the
buttons work
normally?
Check waveform of
IC901 Pin 21, 22.
Check waveform
of IC901 Pin 27.
Is Digitron on normally?
LED ON?
Check waveform
of IC901 Pin 6.
Is oscillation of
X901 normal?
Is waveform of IC901
Pin 40 normal?
Check waveform
of IC901 Pin 22.
Does pulse
waveform of RC901 Pin 1
appear?
Is IC901
Pin 17 connected to
RC901 Pin 1 ?
Is RC901 Pin 2 5V?
Power on.
Check and replace
R916, R926, R925.
R916, R926, R925.
Solder defective parts again.
Solder defective parts
Replace IC901.
Solder Key part.
Check Power.
Replace IC902.
Replace IC901.
Replace LED9A1.
Replace RC901.
Re-solder.
Recheck
Replace IC901.
Complete repairing Front B/D.
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
CD
4. Front Circuit (Digitron & key)
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