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The service manual is as described and received the link to the download sooner than expected. Great service, quality product. This site is a big help in the electronics repair business.
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Il service manual molto accurato. Rapidi nella risposta
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Quick site processing. A complete and very useful manual with all details. Thank you!
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Quick service response. A useful and very rare service manual with all details. I recomend this service.
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I ordered this manual sometime in the afternoon and I received it on my e-mail the same evening.
This is a fantastically good and properly scanned copy of the original manual. All pages are of the same scale and they overlap each other. It means that you can print the manual and easily make it as a convenient paper manual.
The content of the manual is fantastic. Alignment descriptions, PCB layouts and elementary diagrams are explicit and precise. I immediately found what I was looking for. Thanks to this manual and Owner-Manuals.com my amplifier is alive again. Many thanx indded!
Ic DESCRIPTION-2 IC, lJPDl 7709GC-51 7-399
Pin No. 1 2 3 4 5 6 7 8 9 Pin Name
I/o
]1
Tape mechanism standby input
Description
ST-BY
MS signal input (H: Track absent, L: Track present) No connection Tape end detection input I
FWD/REV mechanism position detection input
Main motor control output
*
SUB M CON2 AUX/MIC H. BASS 1 H. BASS 2 BS CONT NR B CONT SIFT PACK-IN MODE POWER MTL PL CONT CONT
Sub-motor
1 control output 2 control output switching signal output
]0 o 0 0 o o
I I I
Sub-motor AUX/MIC H.BASS H.BASS
I I
10
11 12 13 14 15 16 17 18 19
control output 1 (only display is changed) control output 2 (only display is changed) output output shift switch input I I
MWBS switching
Dolby NR ON/OFF Rotary commander
Tape inserted status detection input Tape mechanism mode pulse input Unit power control output Metal tape ON/OFF output
o 10
I O
POWER MUTE STAND BY M
Muting
output to power amp
I I
20 21
22 23 24 25 26 27 28 29
10
Standby muting output to power amp Device ground (LC75854 (LC75854 key matrix is used simultaneously) key matrix is used simultaneously) input For key matrix (2) For key matrix (1)
GND 3
10
I
Rotary commander AF IN FM S-M AM S-M AM IF FM IF VDD FM LOC OSC AM LOC OSC GND EO 2 EO 1 TEST IF REQ CON LOC/DX OUT II II II I I � I I �
I
I I
AF level input during AF operation FM S-meter signal input AM S-meter signal input AM IF count signal input FM IF count signal input Device power supply FM local oscillation AM local oscillation Device ground Charge pump output for low-pass filter Charge pump output for low-pass filter Device test input (need to be pulled down) IF count signal request output LOC/DX switching output during radio tuning input input
30 31
32 33 34 35 36 37 38 39
I
I
I
0 0
�
I
o o o
BEEP OUT
Beep sound output (200Hz, 3kHz, 50ms) The input is accepted only when the display input is received (MONO=H, ST=L). In
I
40
ST IND MOIST
OUT
I/o
other modes, the ST indication MONO key is pressed.
is switched off. Forced monaural output when the
18
 $4.99 CTFX728 AIWA
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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