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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
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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.
[ TEST MODE ] Press SYSTEM POWER button, turn the power on and press DIS PLAY and AUDIO buttons for two seconds at the same time to enter in the test mode. See the list below for check of mode and display. Button Display(mode) PRO-LOGIC ON/OFF & MODE setting. The display will change every pressing the M.MENU button. PHANTOM(ON)n NORMALn WIDEn 3CH LOGICnTHROUGH(OFF) P.FILE PRO LOGIC M.SOURCE PRESENSE MEMORY NAME KARAOKE PON/MPX Note: Turn off the test tone with pressing the M.MENU button to change the mode. Press the corresponded button to each channel to fix each channel of the test tone after the M.SOURCE button. Press the SYSTEM POWER button to cancel the test mode. 7kHz LPF ON/OFF B DECODER ON/OFF LEFT (Lch test tone output) RIGHT (Rch test tone output) CENTER (Cch test tone output) REAR (Sch test tone output) FL & LED all light up
TABLE OF CONTENTS SECTION 1. GENERAL ................................................. 3 SECTION 2. DISASSEMBLY
2-1. 2-2. 2-3. 2-4. Front Panel Assembly ........................................................... 4 Audio Board and DSP Board ............................................... 4 Main Board ........................................................................... 5 Back Panel Assembly ........................................................... 5
SECTION 3. DIAGRAMS
3-1. Circuit Boards Location ....................................................... 6 3-2. IC Pin Function � IC601 System Control (HD6433927B97F) ....................... 7 3-3. 3-4. 3-5. 3-6. Printed Wiring Board � Main Section � ........................... 9 Schematic Diagram � Main Section � ............................ 13 Schematic Diagram � Audio/Panel Section � ................. 18 Printed Wiring Board � Audio/Panel Section � .............. 23
3-7. Printed Wiring Board � DSP Section � .......................... 26 3-8. Schematic Diagram � DSP Section � ............................. 29 3-9. IC Block Diagrams � DSP Section � .............................. 33
SECTION 4. EXPLODED VIEWS
4-1. Front Panel Section 1 ......................................................... 35 4-2. Front Panel Section 2 ......................................................... 36 4-3. Chassis Section ................................................................... 37
SECTION 5. ELECTRICAL PARTS LIST ................. 38
MODEL IDENTIFICATION � BACK PANEL �
PARTS No.
SAFETY-RELATED COMPONENT WARNING !! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MODEL AEP model German model Italian model Singapore model Hong Kong model
PARTS No. 4-978-785-0� 4-978-785-1� 4-978-785-2�
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