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This is a good quality scan of the original Service Manual from Nordmende, Germany. Contains the circuit diagram, PCB layout, adjust/tune instructions as well. It is NOT in English but in GERMAN language! That was quite right for my german friend from the lower east side in Berlin.
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Received via e-mail this PDF manual is worth the money. This is a quality scan of a manual in excellent condition and is just as good as having the original manual in hand. I have later seen the original manual and it was printed in colour, but this particular manual is black & white but scan resolution is high end quality! All drawings and pictures are presented in great detail. So, nearly perfect score in my opinion.
If you own the turntable you also should own the manual!
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I was very satisfied with the service manual I ordered and downloaded. I will definitely buy again from this seller.
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Great product. Recieved it fast...exactly as advertised.
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Manuals were delivered promptly and were correct as advertised. No issues with the download link which was provided promptly after everything was processed. Very pleasant experience
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5.1.5 FLOWCHART OF FAILURE ANALYSIS FOR THE MAIN ASSY
A
Flowchart of Failure Analysis for The MAIN Assy
Failure analysis for the MAIN Assy. � MA1
The STB LED does not light although STB 3.3 V power is supplied.
Is the M1 connector securely connected? Yes
No
Securely connect the M1 connector.
B
Is the cable that is connected to the M1 connector broken? No Is resetting of the IF microcomputer canceled? Yes Is the voltage at Pin 1 of the M5 connector high? Yes Is the M5 connector securely connected?
Yes
Replace the cable (J207).
No
Replace the MAIN Assy.
Failure in the RST IC (IC4801) output or its peripheral circuits
No
Replace the MAIN Assy.
Failure in the line between the IF microcomputer and M7 connector
No
Securely connect the M5 connector.
C
Yes Is the cable that is connected to the M5 connector broken? No No problem with the MAIN Assy. Check the LED Assy. Yes Replace the cable (J113).
Failure analysis for the MAIN Assy. � MA2
D
The RELAY port does not work. The power is not turned on.
Is voltage at REQ_IF (3.3 V) on the MAIN Assy high? Yes
No
Can the unit be turned on, using the remote control unit? Yes
No
Can the unit be turned on, using No the Power switch on the main unit? Yes
Replace the cable that connects the SIDE KEY and MAIN Assys. NG Replace the MAIN Assy. NG
Replace the cable that connects the LED IR and MAIN Assys.
NG Replace the cable that connects the LED IR and MAIN Assys. NG
E
Can the unit be turned on, using No the Power switch on the main unit? Yes Replace the cable that connects the SIDE KEY and MAIN Assys.
Replace the LED IR Assy.
NG Replace the cable that connects the SIDE KEY and MAIN Assys. NG Replace the SIDE KEY Assy.
Replace the MAIN Assy. Is the power (1.8 V, 3.3 V) supplied to the main microcomputer? No Replace the MAIN Assy.
� Failure in the REC IC (IC4402) and PM SW (IC4407) outputs � Does the voltage remain low even though it should be active? � A shutdown, indicated by 9 flashes of LED, will be established in 20 seconds.
F
Yes Replace the MAIN Assy.
If the voltage at Pin 129 (RST2 port) on the main microcomputer is high, it is judged that the AC power cord is not plugged in, and operation of the unit will stop there.
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PDP-427XD
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