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This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
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Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
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This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
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When I purchased this manual I had my doubts regarding the quality as the price was so reasonable as compared to other outlets.
The manual itself is of high standard the print is very clear as are the diagrams. Obviously with the diagrams one has to zoom in otherwise it is to small to be able to read.
Overall I am very pleased with the company who delivered as they said and with the manual they supplied.
I occasionally require a manual and now having registered with this company I shall order from them in the future.
EXPLANATION OF IC
052-1173-50 pin pin pin pin pin pin pin pin pin uPD178078GF-715-3BAA System Controller
pin 55: NU pin 56: CNGND pin 57: NU pin 58: NU pin 59: BEEP pin 60: RADIO ON pin 61: DIM PWM pin 62: CD RESET pin 63: FRONT MUTE pin 64: REAR MUTE pin 65: NU pin 66: FM ON pin 67: AM ON pin 68: CD ON pin 69: NDS RX pin 70: NDS TX pin 71: NDS REQ pin 72: RF MUTE pin 73: DX/LO pin 74: SYS ON pin 75: AMP ON pin 76: AMP MUTE pin 77: NU pin 78: ACC IN pin 79: ILL PULSE pin 80: A/C SEL 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 CLCK 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. : - : PLL down. : - : Not in use. : - : Not in use. : O : Beep out. : O : Radio ON signal output. : O : Dimmer PWM output. : O : The reset pulse output to the CD IC. : O : The audio mute signal output for the front channels. : O : The audio mute signal output for the rear channels. : - : Not in use. : O : FM ON signal output. : O : AM ON signal output. : O : CD ON signal output. : IN : NDS serial data input from NDS-A/C. : O : NDS serial data output to NDS-A/C. : IN : The request pulse from NDS. : O : Radio frequency signal muting. : O : DX/Local select signal output. : O : System ON signal output. : O : Audio power amplifier ON signal output. : O : Mute signal output to audio power amplifier. : - : Not in use. : IN : ACC detection signal intput. : IN : Illumination control signal input. : IN : Low = without A/C. : IN : Sub code block synchronous signal detection 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 : Inside limit signal input from the CD mechanism. : 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.
1: EJECT SW 2: NAVI ON 3: NU 4: VOL DATA 5: VOL CLK 6: VOL CE 7: NU 8: LCD DI 9: LCD DO
: IN : Eject switch signal input. : IN : NAVI ON signal input. : - : 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. : O : Reset pulse output to LCD driver. : IN : Power switch ON signal input. : IN : Volume control pulse input from the rotary encoder. : IN : Volume control pulse input from the rotary encoder. : - : Not in use. : IN : Illumination ON signal input. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : - : Not in use. : IN : Remote control signal input. : IN : Remote control signal input. : IN : The analog voltage input for illumination signal. : - : 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 : The input terminal of the internal counter for AM IF. : IN : The input terminal of the internal counter for FM IF. : - : Positive supply voltage for the PLL. : IN : The input terminal of the internal counter for FM OSC ( Local Oscillation ). : IN : The input terminal of the internal counter for AM OSC ( Local Oscillation ). : - : Ground for the PLL. : O : PLL error signal output. : - : Not in use. : IN : Connect to the ground. : IN : Reset signal input. : IN : Telephone ON signal input. : - : Not in use. :I/O: Outputs "L" at AM 900kHz receiving. Inputs "L" at FM stereo receiving. : - : Not in use.
pin 10: LCD CLK pin 11: LCD CE pin 12: LCD RST pin 13: POWER SW pin 14: VOL 1 pin 15: VOL 2 pin 16: NU pin 17: ILL pin 18: NU pin 19: NU pin 20: NU pin 21: NU pin 22: NU pin 23: REM A pin 24: REM B pin 25: ILL AD 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 IN pin 42: FM IF IN pin 43: VDD PLL pin 44: FM OSC IN pin 45: AM OSC IN pin 46: GND PLL pin 47: VT pin 48: NU pin 49: IC pin 50: RESET pin 51: TEL ON pin 52: NU pin 53: ST/TWEET pin 54: NU
pin 83: CD CONNECT : IN : CD connection check signal input.
-3-
PP-2515L-E
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