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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!!!!
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This was the Sony CCU-500A Service manual I was looking for.
The price was reasonable.
The permission to download was quck.
I will use Owner-Manual.com for all my manual needs.
WIRING MANAGEMENT DRAWING
NOTE: For general servicing, it is necessary to eliminate pinching of any wire during reassembly. After servicing any electrical component or electrical enclosure, the unit should be reassembled and checked for dielectric breakdown or current leakage.
POWER CORD REPLACEMENT
Removal
1. Refer to Handle Removal / Installation Section, page 16. 2. With handle removed from body disassemble handle by removing fourteen (14) screws. Refer to Handle Exploded View (page 10). 3. Remove handle release button and spring.
BLACK (SWITCH) BLACK (SWITCH) CABLE TIE
4. Remove damaged cord.
Installation
1. Replace damaged cord. carefully routing power cord as illustrated in (Fig. 11). 2. Reinstall handle as outlined in the handle installation section. 3. Replace the cord stopper, the two (2) cord stopper screws and the wire connectors. NOTE: Never reuse a cord stopper. Always install a new cord stopper whenever the old one is removed.
Power Cord
(Fig. 11)
Note: Powercord should extend 75mm beyond the cord stopper and routed towards sidewall as shown. The three (3) groups of wire should be tied along with the switch wires with a cable tie.
Handle
BLACK (POWER) WHITE (POWER) CORD STOPPER BLACK (JUMPER) WHITE (JUMPER)
NOTE: For general servicing, it is necessary to eliminate pinching of any wire during reassembly. After servicing any electrical component or electrical enclosure, the unit should be reassembled and checked for dielectric breakdown or current leakage.
ON / OFF SWITCH REPLACEMENT
Removal
1. Remove the dust cover to expose the electrical connections of the ON/OFF switch. 2. Remove the insulated black wire lead from switch. Note the location of the insulated lead when removing from switch. 3. Remove uninsulated black wire from switch.
WHITE (LIGHT)
Retaining Tabs Black (Insulated) Black
(Fig. 12)
YELLOW (LIGHT)
4. Remove the ON/OFF switch, (for ON/OFF switch replacement) by depressing the switch retaining tabs while pushing up out of the dust compartment at the same time.
WHITE (MOTOR)
Installation
1. When re-connecting lead wires to ON/OFF switch make sure the insulated lead is reconnected to its original location as shown in Fig.12.
GRAY (MOTOR/FUSE)
-4-
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