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The manual was of good quality with high resolution schematic diagrams.
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The manual was very clear and contained all the information I was looking for. My dishwasher is working again because of this servicemanual!
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Quality scan, great manual. I solved my problem with this manual.
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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
KRC-669/669G
COMPONENTS DESCRIPTION
Ref. No. Q5 Detection Q6 Q51 Q52 Q53 Q54 Q151 P-CON Detection Main Motor SW q Main Motor SW w Sub Motor AVR MSTC SW DSI Driver panel is taken off. When the panel is attached, the base goes �L�, turning the Tr ON to supply 5V to the panel. Q152 Q201 Q350 Q351 Q352 Panel 5V SW When panel is taken off, panel 5Vcut off. Noise buffer Pre Mute SW Pre Mute SW Pre Mute SW Drives the Pre Mute sw (Q351~354) when the base is �L�. Mutes the Rear Lch when the base is �H�. Mutes the Rear Rch when the base is �H�. �L� when FM/AM signal does not exist. �H� when P-CON output is short-circuit. Outputs 14V when the base is �L�. Q51 turns ON when the base is �H�. Output 3.6V when the base of Q4 is �L�. ON when the base is �H�. DSI lights when the base is �L�. DSI turns off when the base is �H�. DSI turns on and off when Application / Function Power-Antenna Operation / Condition / Compatibility �H� when P-ANT output is short-circuit (P.ANT OFF).
� SWITCH UNIT (X16-2500-21)
Ref. No. IC1 IC2 Q1,4 Application / Function LCD Driver Remote Control IC REMO ON SW Drives LCD Controls the unit The power supply of IC2 is turned on when base level goes �L�. Operation / Condition / Compatibility
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