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AIWA CTX420
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of AIWA CTX420 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 11 (click to view)
IC DESCRIPTION IC, TC9323F
Pin No. 1~4 5 6 7 8 9 10 11 12 Pin Name N.C
_______

I/O � O � O O O O O O Not connected. MS signal output Not connected. Standby muting output Muting output to power amp Loudness output

Description

APS N.C S-MUTE
______________

P-MUTE LOUD LOCAL MONO 20dB MUTE

Local/DX switching output. LOCAL: "H", DX: "L" MONO/STEREO switching output. MONO: "H", STEREO: "L" -20dB muting output. This function is enabled when the -20dB muting jumper is selected.

13 14 15 16

AGC CUT/IF REQ RADIO TAPE CD

O O O O

Outputs "H" during searching of frequency. This is an IF count control signal or used to shut off the AGC circuit. RADIO output TAPE output CD output Band switching outputs

17

BAND 1

O FM MW LW FM (L)

BAND1 H L L H

BAND2 L L H H

18

BAND 2

O

19 ~ 21 22 23 24 ~ 33 34 ~ 37 38 ~ 45 46 47 48 49 50 51 52 53 54 55 56

N.C RE1 RE2 N.C K0 ~ K3 T0 ~ T7 TAPE CD PANEL POWER PHONE MUTE LEVEL METER DIR FF/REW E-VOL DATA E-VOL CK E-VOL CE

� I I � I O I I I O I � I I

Not connected Rotary encoder input 1 Rotary encoder input 2 Not connected Key matrix inputs Diode matrix outputs TAPE input CD input. "H" CD input enables the CD key. Detects detachable panel (0.2-0.5 s chattering time is provided). Panel provided: "H", Panel not provided: "L" Power output The telephone signal automatically applies muting. The signal level is converted to a digital signal. This meter signal moves the LCD level bar according to the level. TAPE running direction indicator input TAPE FF/REW indicator input

O

Pins to control the LC75374E electronic VR.

15

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CT-X420 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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