AIWA HSJX807
Service Manual

IC DESCRIPTION
IC, TC9327F-017 Pin No.
1~4 5 ~ 21

Pin Name
COM1~COM4 SEG1 ~ SEG17

I/O
O O LCD common output 1~4. LCD segment output 1~17.

Description

Pin No.
56 57 58

Pin Name
DOLBY OUT 70/120 CS SCK EEPROM SDATA EEPROM POWER ON POW MUTE NC IF IN TU OUT PLL OUT P-SNSR BIAS MUTE GND FM IN AM IN VDD RESET XOUT XIN VXT VLCD C1 C2 VEE

I/O
O O O O I/O O O � I O O I O � I I � I O I � � � � � DOLBY ON/OFF control output pin.

Description
Pin to output normal tape and metal tape switching. Pin to control READ,WRITE of EEPROM. Pin to output serial clock of EEPROM. Pin to input/output data of EEPROM. "H": POWER ON. "L": POWER OFF. Pin to output muting. "H": MUTE ON. "L": MUTE OFF. Not connected. Pin to input IF signal. Output "H". "H": TU mode. "L": except TU mode. Output phase comparison instrument. Pin to input photo sensor waveform output. Pin to output mute when REC. "H": MUTE ON. "L": MUTE OFF. GND. Input FM programmable counter. Input AM programmable counter. Pin to apply voltage. Pin to input system reset signal. Crystal oscillation pin. Crystal oscillation pin. Power supply pin for crystal oscillation. Reference voltage pin for LCD drive. Reference voltage pin for LCD drive. Reference voltage pin for LCD drive. 1.5V constant voltage power supply pin for LCD drive.

Input pin for switching J , U , E , H areas. J area A-SET1 22,23 A-SET1,2 I A-SET2 L H L H L U area L E area H H area H

59 60 61 62

24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

IF 10.7 REC ENA DOLBY ENA F. REC P R. REC P MS IN TIMING SW MOT CH L.V. STOP HOLD UP DOWN ENTER C-SW MOT ON MOT HI MOT DIR BRAKE REMOTE MAIN FM OUT AM OUT JACK IN SDATA SCLK BUZR FM MODE F. REC ON R.REC ON REC ON F/R CTL DSL OUT

I I I I I I I I I I I I I I O O O O I I O O I O I O O O O O O O

"H": IF 10.75 MHz. "L": 10.7 MHz. Input pin for REC enable. "H": REC enable. "L": REC disable. Input pin for DOLBY enable. "H": DOLBY enable. "L": DOLBY disable. "H": FWD REC shift disable. "L": enable. "H": REV REC shift disable. "L": enable. Pin to input music sensor signal. "H": music exist. "L": blank. Pin to input for mechanism operation detection. Pin to input for motor activation detection. Stop mechanism operation and hold key input when low voltage is detected. "H": Hold OFF. "L": Hold ON. Up key input pin. "H": Key ON. "L": Key OFF. Down key input pin. "H": Key ON. "L": Key OFF. Enter key input pin. "H": Key ON. "L": Key OFF. Input pin for detecting the presence of cassette. "H": C-SW OFF. "L": C-SW ON. Pin to output motor control. "H": Motor ON. "L": Motor OFF. Pin to control motor. "H": Motor high speed. "L": Motor normal speed. Pin to output for motor rotation direction. "H": Clockwise. "L": Counter Clockwise. Pin to output brake control for motor. "H": Brake ON. "L": Brake OFF. Remote control key input pin. Main unit key input pin. Pin to output for FM mode. "H": FM mode. "L" except FM mode. Pin to output for AM mode. "H": AM(MW) mode. "L" except AM(MW) mode. This is a pin where HP plug input is detected. "H": no plug. "L" plug exist. Pin to output data for remote controller display. Pin to input serial clock. Output buzzer. Pin to output FM MONO/ST switching. "H": FWD REC mode. "L": Other mode. "H": REV REC mode. "L": Other mode. "H": REC mode. "L": Other mode. Output pin for tape run direction. "H": FWD direction. "L": REV direction. Pin to output DSL ON/OFF control.

63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

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