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pin 51: BUC 2 pin 52: BUC 3 pin 53: BUC CLOCK pin 54: CCE pin 55: CD RESET pin 56: S STOP pin 57: CHU SW pin 58: TR A pin 59: TR B pin 60: VDD pin 61: LD CNT pin 62: GND pin 63: PLL CE pin 64: PLL CLK pin 65: PLL DO pin 66: PLL DI pin 67: ST/TWEET pin 68: NDS/IMB pin 69: MECH MUTE pin 70: RDS DATA pin 71: RDS CLK pin 73: TAPE IN pin 74: MODE BIT 1 pin 75: MODE BIT 2 pin 76: MODE BIT 3 pin 77: REEL PULSE pin 78: APC SENSE
:I/O: CD IC Data input / output. :I/O: CD IC Data input / output. : O : CD IC clock pulse output. : O : Chip enable signal output to CD IC. : O : Reset signal output to the CD IC. : IN : In side limit signal input. : IN : CD disc chucking signal input. : IN : The signal input from the CD mechanism. : IN : The signal input from the CD mechanism. : - : Positive supply voltage. :I/O: The loading control. : - : Ground. : O : Chip enable signal output to the PLL IC. : O : Clock pulse output to the PLL IC. : O : Serial data output to the PLL IC. : IN : Serial data input from the PLL IC. :I/O: Outputs "L" at AM 900kHz receiving. Inputs "L" at FM stereo receiving. : O : "H"= NDS, "L"= IMB. : O : Mechanism Mute signal output. : IN : RDS serial data input. : IN : Clock pulse input from RDS decoder. : IN : Tape loading start signal input. : IN : Mode switch signal input from the mechanism. : IN : Mode switch signal input from the mechanism. : IN : Mode switch signal input from the mechanism. : IN : Reel pulse input. : O : Sensitivity selection signal output to the APC circuit. "H"= play.
: IN : APC detection signal input. : O : Power motor control signal output. : O : Power motor control signal output. : O : The main mortor control signal output. : O : DOLBY ON signal output. : O : "H"= Forward, "L"= Reverse.
pin 85: VOL1/LD MUTE : IN : The volume pulse input, or the LD MUTE input. pin 86: VOL2/CD CON : IN : The volume pulse input, or the short check flag input for the cable to CD. pin 87: 6 CD LOAD : IN : The load signal input. pin 88: TAPE EJECT pin 89: EJECT pin 90: Tel/Radio pin 91: ILL DC pin 92: REMOCON A pin 93: REMOCON B pin 94: A VSS pin 95: S METER pin 96: Vref pin 97: A VCC pin 98: POWER SW : IN : The tape eject signal input. : IN : Eject key input. : O : The input selection signal output for the electric volume. : IN : VFD-brightness control signal input. : IN : The input terminal of the internal ADC for the handle remote controller. : IN : The input terminal of the internal ADC for the handle remote controller. : - : Analog ground. : IN : The input terminal of Internal A/D converter to detect the Voltage of FM S meter. : - : Reference voltage : - : Positive supply voltage for the internal analog section. : IN : Power Key input(alternative).
pin 72: SPEED PULSE : IN : The speed pulse input.
pin 99: DISP CE2/RST : O : The chip enable signal-2 output to the VFD driver, or the reset signal output to the LCD driver. pin100: DISP CE1/CE : O : The chip enable signal-1 output to the VFD driver, or the chip enable signal output to the LCD driver.
ADJUSTMENTS
Radio section
Item FM Diversity FM noise convergence Procedure 1. Input the 98.1MHz/20dB(1kHz,30% MOD) signal. 2. Connect a digital tester to TP101 and adjust VR101 so that the reading of digital tester is 0.6+0.1/-0.1V. 1. Input the 98.1MHz/55dBu(1kHz 30% MOD) signal. (VOL 1.4V=0dB) 2. Adjust the outputs to -18+1/-1dB by VR102 when the SG output is set to -20dBu.
Measuring instrument
SSG Digital tester SSG AC volt meter
Tape section
Item Dolby level Procedure 1. Playback a Dolby level test tape(400Hz,200nWb/m) and connect the Milli-volt meter to TP201(L)/TP202(R). 2. Adjust VR1(L)/VR2(R) to obtain an output of TP201(L)/TP202(R) is 300mV+1/-1dB. (Dolby SW:off) 1. Playback a Wow & flutter test tape(3kHz,-10VU) and connect the frequency counter to TP201(L) or TP202(R). 2. Adjust Speed VR of the motor to obtain an output of TP201(L),TP202(R) is from 2970Hz to 3090Hz.
Measuring instrument
