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exactly as they say. Within 24 hours the link to the pages and offcourse it was the right service manual. Super and thanks
 ;
The manual was exact the thing that was promised. My old car stereo is working again thanks to the information supplied.
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I PURHASED THIS PRODUCT BECAUSE I WAS HAVING PROBLEMS WITH MY CDR20 HARMAN KARDON RECORDER. WHICH I PURCHASED NEW 12 YEARS AGO. AFTER REVIEWING THE MANUAL, I WAS ABLE TO ADJUST THE TENSIONER IN THE SYSTEM. WORKS LIKE A CHAMP!.
SAVED ME AT LEAST 100.00 WHICH WAS WHAT A SERVICE REPAIR STATION WANTED. GREAT MANUAL EASY TO READ. SPECIALLY AFTER I PRINTED THE PAGES WHICH DEALT WITH MY RECORDER. THANKS A LOT!!!!!!!!
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You can fully trust on this one!
All the schematics are very crear an in one piece per page
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I have never bought a service manual which is as competely readable as this althogh it was a scanned pdf. Thank you for this succesful manual also cheaper than other sites.
TROUBLESHOOTING THE 50AF1 PANEL
(1)
YSUS
CN32
[YSUS - XSUS]
-Vs -Vs NC GND NC Vcc NC Vx NC GND NC Vs Vs
13 12 11 10 9 8 7 6 5 4 3 2 1
On Y-SUS board CN32 (1)-(4) pins or CN32 (6)-(4) pins or CN32 (8)-(10) pins or CN32 (10)-(13) pins shorted?
Y
Y-SUS board is defective.
Switching circuit (power supply) has a short-circuit.
N
Remove SDR from CN34 and CN35 on YSUS
A N A L Y S I S O P E R A T I O N
On CN801 on SDRU, or CN811 on SDRD, check for short circuit in following pins? (2)-(6), (20)-(24), (28)-(30), (46)-(50)
Y
SDR is defective.
N
On X-BUS board CN63 (1)-(9) shorted.
Y
XFPCs (Ribbon connectos to Panel)
Remove the six XFPCs (Disconnect CN61, CN62, CN63, CN64, CN65 and CN66)
N
On X-BUS board CN63 (1)-(9) are shorted.
N
Panel chassis is defective
Y
Remove XBUS-U XBUS-D
On X-BUS board CN63 (1)-(9) shorted?
Y
N
XBUS board is defective.
X-SUS board is defective.
(2)
End of analysis
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