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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!!!!
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I got your link from a friend and I must say that I am really satisfied with your service. Specially this B&O manual I didn't find anywhere on the web... but you could deliver it :-) . You deliver very fast and the copy is of good quality. So your webpage is bookmarked. Thanks
KRC-608,678R/RY/RV/RYV
TEST MODE
(1) How to enter the test mode While holding the FM and Preset 6 keys simultaneously, reset the unit. All indicators and display segments are ON at the start of test mode. (2) How to exit from the test mode Reset the unit. (Note) The test mode cannot be canceled by turning Acc OFF, power OFF or momentary power down. (3) (return to beginning) Pressing the Track Down key jumps to the previous track to the track being played. (4) Test mode specification of the tape o The Blank Skip is initially OFF. (5) Audio o The volume is -10 dB (displayed as 30). o LOUD is OFF, and CRSC is also OFF whether the function is provided or not. o With the Bass/Treble and Balance/Fader controls, pressing the Up/Down key switch the setting alternately to: Full Boost => Full Cut => Full Boost, Full Right -> Full Left => Full Right, or Full Front ~> Full Rear => Full Front. o With the high-pass filter, pressing the Up key sets it to Through/100 Hz/200 Hz and pressing the Down key sets it to 200 Hz/100 Hz/Through. o Other adjustments function in the same way as normal mode. (6) Backup current measurement When the unit is reset (backup turned on) while Acc is OFF or when Acc is turned OFF in test mode, the MUTE terminal goes on in 2 seconds, instead of 1.5 second. (The panel, CD, C and MD mechanisms are not activated at this time.) (7) Security code registration after E2PROM replacement servicing (E/M type only) 1. Enter the test mode. (See (1) How to enter the test mode.) 2. Press the SRC key to set All OFF. 3. Press and hold the AUDIO key for 1 second to enter menu mode. 4. Press the FM/AM key to select "SECURITY". 5. Press and hold the Track Up/Down for 2 seconds. 6. Enter the code by pressing the Preset 1, 2, 3 and 4 keys. Example: To enter "3510", - Press the Preset 1 key 4 times. - Press the Preset 2 key 6 times. - Press the Preset 3 key 2 times. - Press the Preset 4 key once. 7. Press and hold the DISPLAY key for 3 seconds to display "APPROVED". 8. Quit the test mode (See (2) How to exit from the test mode.) (8) How to clear the simple security code (K type only) 1. While the code is requested, press and hold the DISP key and press and hold the VOL Up key for 3 seconds. ("----" disappears.) 2. Enter "KCAR" from the remote control unit. (Same operation as the '98 model) - Press numeric key 5 twice then press the Track Up key. (This enters "K".) - Press numeric key 2 three times then press the Track Up key. (This enters "A".) - Press numeric key 2 once then press the Track Up key. (This enters "A".) - Press numeric key 7 twice then press the Track Up key. (This enters "R".) 3. The security is canceled and the unit enters the TUNER mode. (9) Other o The DNPP/SBF key of the remote control unit (RC-510) functions as the menu mode ON/OFF key. o The OPEN/CLOSE key of the remote control unit (RC510) functions as the audio adjustment mode ON/OFF key. o The menu is displayed by displaying only the required features. o Message such as "CODE OFF" is not displayed when power is turned ON. o The contrast can be adjusted only to 0/5/10 using the Up/Down keys.
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