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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!!!!
2.1.7 Removing the power amplifier board / power amplifier sub board / main board / heat sink (See Fig.13 ~ 21) � Prior to performing the following procedure, remove the metal cover, the rear cover, the CD-R mechanism assembly and the rear panel. (1) Disconnect the card wire from connector CN900, CN901, CN933 and CN931 on the main board respectively. (2) Disconnect the wire from connector CN949, CN950 and CN951 on the power supply board. (3) Remove the two screws I on the right side of the body. (4) Move the boards and heat sink assembly upwards and disengage the joint d and the two joints e to release the power amplifier board and the main board from the chassis (Refer toFig.15 , 16). Move the rear part of the board and heat sink assembly to the right side. CAUTION: The wire extending from the lower side of the main board is still connected with the body (Refer to Fig.17). (5) Disconnect the wire from connector CN906 on the lower side of the main board (Refer to Fig.18). 2.1.8 Removing the power amplifier board (See Fig.19 ~ 21) (1) Disconnect the power amplifier board from connector CN941 on the power amplifier sub board. 2.1.9 Removing the power amplifier sub board (See Fig.19 ~ 21) (1) Disconnect the two wires from connector CN944, CN945, CN946 and CN947 on the power amplifier sub board. (2) Remove the two screws J attaching the power amplifier sub board and the heat sink. 2.1.10 Removing the main board (See Fig.19 ~ 21) (1) Disconnect the wires from connector CN944, CN945, CN946 and CN947 on the power amplifier sub board. (2) Remove the two screws K attaching the main board and the heat sink. REFERENCE: The power amplifier board, the power amplifier sub board, the main board and the heat sink can be remove drespectively.
Power supply board CN949
Main board CN900 CN933 CN901
CN950
CN951
CN931
Front panel assembly Fig.14
Main board
Front panel assembly
I
Joint e
Fig.15
I
Heat sink
Front panel assembly CN901 CN900 CN931 CN933 Main board
Power amplifier board Power supply board Fig.13 CN949 / CN950 / CN951 Chassis Fig.16
Joint d
1-10 (No.22036)
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