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tres bon document
cela a permis de verifier la connection de l'ecran
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!
Quality scan, great manual. I solved my problem with this manual.
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.
NEITHER VERTICAL NOR HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED: Sync. Separator Circuit.
Check pin33 and 34 of IC801.
DEFECTIVE VERTICEL AMP. AND VERTICAL LINEARITY
Readjusted vertical size. (Bass Data)
Vertical linearity and size is abnormal.
NO VERTICAL SCAN
Check IC501 bias. Normal Abnormal
Check C502 and C514.
NO SPECIFIC COLOUR
Is some colour produced in B/W broadcast reception? Check IC801,R801,R802, R803,D804,D805,D806 and Q801.
Is the white balance properly adjusted?
Readjusted the white balance.
The picture colour is cyan.
The picture colour is magenta.
The picture colour is yellow.
Check Q870,Q885 and their adjacent circuits.
Check Q871,Q883 and their adjacent circuits.
Check Q872,Q887 and their adjacent circuits.