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AIWA CTFR929M YZ
Service Manual


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

Description of AIWA CTFR929M YZ 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 12 (click to view)
IC DESCRIPTION
IC, UPD16432B Pin No.
1~4 5 6 ~ 10 11 12 13 14 15 16 17

ELECTRICAL ADJUSTMENT
A MAIN C.B

Pin Name
LED1~4 VSS VCL5 ~1 VLCD VCC SYNC LCD OFF RESET KEYREQ CLI

I/O
O I/O I O I LED output, Nch open-drain. GND.

Description

Dot matrix LCD driver power supply. LCD driver power supply. Internal logic power supply. Input/output singnal synchronization. When "L", a forced LCD OFF operation is performed, and SIGn & COMn output the unselected waveform. Initial state is set when "L". "H" if there is KEY data, "L" if there is none. KEY data can be read in respective of the state of this pin, CMOS output. DATA shift clock. DATA is read on rising edge, and output on falling edge. Performs input of commands, key data etc., and key data output. Input is performed from the MSB on the rise of the shift clock, and the first 8 bits are recognized as a
TUN101 TP1(Lch) SFR202 (Rch) TP2(Rch) GND

1
SFR201 (Lch)

18

DATA

I/O

command. Output is perform from the MSB on the fall of the shift clock. Output is Nch open-drain.

19 20, 21 22 ~ 25 26 ~ 33 34 ~ 90 91 ~ 100

STB OSCIN,OSCOUT KEY1~4 KS1~6 SEG9~65 COM9~O

I I/O I O O O

Strobe input, DATA input is unabled when "H". Command processing performed on a fall. Oscillation circuit. KEY scanninng key data input. KEYscanning key source output. Dot matrix LCD segment output. Dot matrix LCD common output. 1. Dolby NR Adjustment Settings : • Test tape : TTA–200 • Test points : TP1(Lch), TP2(Rch) • Adjustment location : SFR201(Lch), SFR202(Rch) Method : 1. Play a Dolby NR tape and adjust SFR201 and SFR202 so that the Lch (TP1) and Rch(TP2) levels are 300 ± 5mV. 2. Adjust the level in the forward running direction, and then check in the reverse direction. If the level drifts from the specification, perform readjustment.

PRACTICAL SERVICE FIGURE
<TUNER SECTION>
<FM SECTION> IHF Sensitivity: (S/N 30dB) Signal to noise ratio: Less than 10 dBµV [at 87.5/98.0/108.0 MHz] More than 57 dB (mono) More than 57 dB (stereo) [at 87.5/98.0/108.0 MHz] Less than 1.5% (mono) Less than 2.0% (stereo) [at 98.0 MHz] More than 22 dB [at 98.0 MHz] 10.7 MHz <LW SECTION> Sensitivity: (S/N 20 dB) Signal to noise ratio: (INPUT 74 dB) Distortion: Less than 40 dBµV [at 162/216/270 kHz] More than 37 dB [at 162/216/270 kHz] Less than 1.5% [at 216 kHz]

Distortion:

Stereo separation: IF Frequency: <MW SECTION> Sensitivity: (S/N 20 dB) Signal to noise ratio: (INPUT 74 dB) Distortion: IF Frequency: 15

<DECK SECTION>
Tape speed: Wow & flutter: Max Output level: Distortion (PB): Noise level: Signal to noise ratio: 2955 ~ 3090Hz (TTA-100) Less than 0.35% (R.M.S) more than 9 V (TTA-210) Less than 2.0% (TTA-210) Less than 100 mV (at 120 µs, Vol Max) More than 48 dB

Less than 35 dBµV [at 603/999/1404 kHz] More than 42 dB [at 603/999/1404 kHz] Less than 1.5% [at 999 kHz] 450 kHz 16

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