Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
you are doing great job guys.....my father ask me to find out the schematics of Sony KV25R1D to sort out the problem ..(he was electrical technician, and excperianced with TV and simillar stuff). finally he found the cause and change all necessary parts....now he has got working old dog..and is very happy!!... thank you all.. NB..he also saved the repair cost.
1. Input the 98.1MHz/55dBμ(1kHz 30% MOD) signal. SSG 2. Adjust the outputs to �18±3dB by VR102 when the SG output is set to �20dBμ. AC volt meter 1. Turn off and on the ACC switch twice, while holding the buttons of power switch and CD eject to make the unit the test mode. 2. Set a universal timer to TP101(T-BASE), adjust TC201 so that a reading of the meter is 0±0.1 sec./day. Chronometer
â� EXPLANATION OF IC
052-1163-20 uPD178076GF-540-3BA
1.Terminal Description pin 1: EJECT SW pin pin pin pin pin pin pin 2: NU 3: NU 4: VOL DATA 5: VOL CLK 6: VOL CE 7: NU 8: LCD DI
CD & Radio System control
pin 48: NU pin 49: IC pin 50: RESET pin 51: NU pin 52: NU pin 53: ST/TWEET pin 54: CLK INT pin 55: AUX ON pin 56: TEST pin 57: LCD ON pin 58: NU pin 59: BEEP pin 60: NU pin 61: NU pin 62: CD RESET pin 63: NU pin 64: AF MUTE pin 65: NU pin 66: FM ON pin 67: AM ON pin 68: CD ON pin 69: NU pin 70: NU pin 71: NU pin 72: RF MUTE pin 73: DX/LO pin 74: SYS ON pin 75: AMP ON pin 76: COMBI ON pin 77: NU pin 78: ACC IN pin 79: RADIO ON pin 80: NU pin 81: SBSY pin 82: GND pin 84: BUS 0 pin 85: BUS 1 pin 86: BUS 2 pin 87: BUS 3 pin 88: BUS CK pin 89: CCE pin 90: GS1 TEST pin 91: S STOP pin 92: CHU SW pin 93: TR B pin 94: TR A pin 95: LD CONT pin 96: LD MUTE pin 97: NU pin 98: BAND SEL pin 99: VDD pin100: GND : - : Not in use. : IN : Connected to the ground. : IN : Reset signal input. : - : Not in use. : - : Not in use. :I/O: Outputs "L" at AM 900kHz receiving. Inputs "L" at FM stereo receiving. : IN : Without a clock = "H". : IN : AUX ON signal input. : - : For the Test. : O : LCD back light ON signal output. : - : Not in use. : O : Beep out. : - : Not in use. : - : Not in use. : O : The reset pulse output to the CD IC. : - : Not in use. : O : Audio frequency signal muting. : - : Not in use. : O : FM ON signal output. : O : AM ON signal output. : O : CD ON signal output. : - : Not in use. : - : Not in use. : - : Not in use. : O : Radio frequency signal muting. : O : DX/Local select signal output. : O : System ON signal output. : O : Audio power amplifier ON signal output. : O : Combi ON signal output. : - : Not in use. : IN : ACC detection signal intput. : O : Radio ON signal output. : - : Not in use. : IN : Sub code sync input. : - : Ground. :I/O: CD IC Data input / output. :I/O: CD IC Data input / output. :I/O: CD IC Data input / output. :I/O: CD IC Data input / output. : O : Clock pulse output to the CD IC. : O : The chip enable signal output. : O : Test data output. : IN : In side limit signal input. : IN : CD disc chucking signal input. : IN : Photo sensor signal input from the CD mechanism. : IN : Photo sensor signal input from the CD mechanism. : IN : Loading control signal input. : O : Muting signal output to the CD mechanism. : - : Not in use. : IN : Band selection input. : - : Positive supply voltage. : - : Ground.
: IN : Eject switch ON signal input. : - : Not in use. : - : Not in use. : O : The serial data output to the volume IC. : O : The clock pulse output to the volume IC. : O : The chip enable signal output to the volume IC. : - : Not in use. : IN : The srial data input from the LCD driver. : O : The srial data output to the LCD driver. : O : The clock pulse output to the LCD driver. : O : The chip enable signal output to the LCD driver. : - : Not in use. : IN : Power switch ON signal input. : IN : Volume control pulse input from the rotary encoder. : IN : Volume control pulse input from the rotary encoder. : IN : Illumination ON signal input. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Positive supply voltage for the Analog section. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Analog ground. : IN : The capacitor connection terminal to suppress the ripple. : - : Positive supply voltage. : IN : The capacitor connection terminal to suppress the ripple. : - : Crystal connection. : - : Crystal connection. : - : Ground. : - : Not in use. : - : Ground. : IN : Input terminal of the internal universal counter for AM IF. : IN : Input terminal of the internal universal counter for FM IF. : - : Positive supply voltage for the PLL. : IN : Input terminal of the internal counter for FM OSC( Local Oscillation ). : IN : Input terminal of the internal counter for AM OSC( Local Oscillation ). : - : Ground for the PLL. : O : PLL error output.
pin 9: LCD DO pin 10: LCD CLK pin 11: LCD CE pin 12: NU pin 13: POWER SW pin 14: VOL 1 pin 15: VOL 2 pin 16: ILL pin 17: NU pin 18: NU pin 19: NU pin 20: NU pin 21: NU pin 22: NU pin 23: NU pin 24: NU pin 25: NU pin 26: NU pin 27: A VDD pin 28: NU pin 29: NU pin 30: NU pin 31: NU pin 32: A VSS pin 33: REG CPU pin 34: VDD pin 35: REG OSC pin 36: X 2 pin 37: X 1 pin 38: GND pin 39: NU pin 40: GND pin 41: AM IF pin 42: FM IF pin 43: VDD PLL pin 44: FM OSC pin 45: AM OSC pin 46: GND PLL pin 47: Voltage Tune
pin 83: CD CONNECT : IN : CD connection check signal input.
