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 ;
tres bon document
cela a permis de verifier la connection de l'ecran
merci
salutations
;
The manual was of good quality with high resolution schematic diagrams.
;
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.
S-Video output error
Component output error
16pin and 20pin in CN2 of jack PCB or CN2 of main PCB has normal level? Yes
No
Check main PCB.
4, 8 and 12pin in CN2 of jack PCB or CN2 of main PCB has normal level?
No
Check main PCB
Yes
Analong signals are inputted nirmally VIC1 (Jack PCB) Yes
No
Check the connection between 6pin and 7 pin in CN01 of main PCB and VIC1
Analog signals are inputted normally VIC1
No
Check the connection between6 and 7pin in CN01 of main PCB and VIC1
Yes
Power is normal at VIC1-1,24, 34?
No
Check the connection between VIC1-1 and power
Power is normal at VIC1-1,24, 34?
No
Check the connection between VIC1-1 and power
Yes
Yes
Pin13 in VIC1 is in high state?
No
Check the connection betweenVIC1-13 and VCR Micom. check VIC1 peripheral circuit
Video signals of about 1V appears at output jack? Yes
No
7-16
Check the connection between VIC1 and output jack Check VIC1-21, 23, 25, VE5, VE6 VE7, VR32, VR33, VR34
Yes
Check the RCA cable
Video signals of about 1V appears at output jack? Yes
No Check the connection between VIC1 and output jack. Check VIC1-28, 31, VR30, VR31
Check the RCA cable
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