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It's a grate service manuals.Have many details and the writing it's so clear.You have all you want in manual,nothing missing,belive me.I'm verry satisfied of this manual.
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Great scanned service manual
Usefull informations.
I will buy again!
Best Regards
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The manual describes this product very good. It has the basic things to know and also a more detailed look. Very well made!
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An excellent document to assist in the repair of my old personal tape player. It includes full circuit diagrams and physical layout drawings and full instructions on disassembly and fault finding.
Well worth the meagre price.
;
Very good conversation, Pretty fast Service, wood do it again,
Have paid by Paypal, so i got the Service Manual online after 15 Min.
Very helpfully.
Greeting from Germany,
Hans
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[2] POWER SUPPLY UNIT
Flowchart of Failure Analysis for The POWER SUPPLY Unit
Failure analysis for the POWER SUPPLY Unit => PP1 STB 3.4 V power is not output.
Is the cable connected firmly to the P7 connector? Yes
B
No
Properly connect the cable between the P7 and M2 connectors.
Is the cable to the P7 connector broken? No Is the fuse (F001) blown? No Is one of the limiting resistor (FR002) blown? No The POWER SUPPLY Unit is normal.
Yes Replace the defective cable (J109).
Check the voltage at the MAIN Assy and POWER SUPPLY Unit.
Yes Replace the POWER SUPPLY Unit.
Yes Replace the POWER SUPPLY Unit.
Check the resistance between D025 cathode and C101 (+), using a tester.
C
Failure analysis for the POWER SUPPLY Unit => PP2
The power is not on, even though the RELAY port is active.
No Is the relay (RY002) on? Yes No Is the PFC voltage normal? Yes
D
Replace the POWER SUPPLY Unit.
� Check the relay operation at the RY002. (Voltage: 3.4 V) � Check the relay sound (click).
Replace the POWER SUPPLY Unit.
� Check the voltage between the C017 (-) and C017 (+). � The voltage must be around 400 V. (340V or less are defective.) Caution: High voltage!
The POWER SUPPLY Unit is normal.
Failure analysis for the POWER SUPPLY Unit => PP3
The cells of the panel do not light normally.
Is the VADR voltage within the specified values? Yes
E
No
Replace the POWER SUPPLY Unit.
The specified voltage values are between 72 and 78 V.
Is there a fluctuation in the VADR voltage? No Is the VSUS voltage within the specified range? Yes Is there a fluctuation in the VSUS voltage? No The POWER SUPPLY Unit is normal.
Yes
Replace the POWER SUPPLY Unit.
The ripple must be within 5 V.
No
Replace the POWER SUPPLY Unit.
The specified voltage values are between 200 and 210 V (VSU: 125/35°C).
Yes Replace the POWER SUPPLY Unit.
The ripple must be within 10 V.
F
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KRP-500P
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