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Great scanned service manual
Usefull informations.
I will buy again!
Best Regards
;
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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Good-quality scans. Detailed description. I hope I can repair the machine.
FLOW CHART NO.4 When the output voltage fluctuates. Does secondary side photo coupler Check circuit and replace the parts. No operate normally? (IC1001, IC1006, D1048, D1015, etc.) See FLOW CHART No.3 <The fuse blows out.> operate normally? (IC1001, IC1012, D1024, etc.) Yes
FLOW CHART NO.1 The power cannot be turned on.(1) No
Is fuse normal? Replace the fuse. Yes
Yes Does primary side photo coupler No Check circuit and replace the parts.
Is normal state restored when once unplugged Check for lead or shor-circuiting of primary No Replace IC1001. power cord is plugged again after several seconds. circuit component? No D1011, T1001, C1003, C1005, etc.) Is EV 5V line voltage normal? When buzz is heard from the vicinity of power circuit. No
Yes (Q1001, Q1003, D1001, D1002, D1004, D1005, FLOW CHART NO.5
Yes
Is the voltage 12V, EV -30V and filament Check each rectifying circuit of secondary circuit. Check for short-circuiting diode and in each rectifying circuit of secondary side. voltage normal? (D1003, D1030, D1008, D1009, D1013, D1016, Q1002, IC1002, Q1007, Q1010, Q1011, Q1014, Q1004, etc.)
NO.2 FLOW CHART NO.6 The power cannot be turned on.(2) The fluorescent display tube does not light. Yes No Does the change from STANDBY LED indicate Yes No
Is supply voltage of fed to pin(6) and pin(24) Check the EV 5V line. turn-off? of IC2001? Check the EV 3.3V line. No Yes No No Is there 500kHz oscillation at pin(26) of IC2001? Check R2001, IC2001 and their periphery. Check the SW2008 and POWER button line. Yes No the signal lines of DA, CK, FIP CS Check or replace IC2001 and IC601. when POWER button activated on the remote Check line between the remote control of IC2001 and IC601? receiver and the pin(125) of IC601.
Yes
TROUBLESHOOTING
1-8-1
Replace IC601. (38), (39) of the fluorescent display tube? and Q2025. Also negative voltage applied between these pins and GND? The STANDBY LED indicate is flashing after 0.5 sec. No damages such as crack. Pin(207) of IC601? No Is switch contact and installation state normal? Replace key switch. (7), (8), (9), (10) of IC2001?
Is the supply voltage of 3.3V fed to Q2021? Is supply voltage fed to pin(15) of Check the -FL -24V line.
Yes IC2001?
Is supply voltage 5V fed to pin(3) of IC2001? Check the IC2001.
Yes
Is the "H" signal inputted at base of Q2021, when POWER button activated on the DVD?
Yes No
Is the "H" signal inputted at base of Q2021,
control unit? Yes No
Yes Are filament voltage applied between (1), (2) Check the power circuit, D1017, Q2023, Q2024
Are "P-CON-H" pulse outputted from the Replace IC601. and its periphery? Check that the fluorescent display tube is free from
Yes (below, confirmed operating at LED turn-off of 0.5 sec. interval.) Yes No
Yes FLOW CHART NO.7
Is P-CON switch circuit operated normally? Check each component and if poor the replace. The key operation is disabled. (Q1002, Q1005, Q1006, IC1002, D1036, D1046)
No
FLOW CHART NO.3 Yes The fuse blows out. Is control voltage normally into the pins(3), (4),
Is there leaking or short-circuited primary Check for short-circuiting of rectifying diode and component? in each rectifying circuit of secondary side.
E56A0TS
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