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There are currently no product reviews.
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This manual is for the usa model only. But it is clear
, accurate and comprehensive, including board layouts and schematics.
I found it extremely useful for my mitsubishi dp-86da, but the same diagram would also work for the realistic lab5000 and hi fi 80. Thanks.
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Great to have extra resources for Service Manuals, Now days you can really not trouble shoot efficiently without one , Wayne at IRIONS TV & ELECTRONICS REPAIR Clearwater , Fl. 33755 727-446-7955
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For five bucks you can barely buy a hamburger. Or for the same five bucks you can buy a service manual. Much more useful. (and better for your health, depending on where you buy your hamburgers).
Yes, there are free manual sites out there, but if they don't have what you want, you have to pay.
And five bucks isn't much. Not for full specs, schematics and adjustment and parts replacement procedures.
My only criticism is that grayscale illustrations aren't well rendered, but I've seen worse.
Schematics and text are clear.
I'll be happy to purchase from here again.
Mike
[email protected]
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Impressively thorough. Even the simple operators manual helped me "fix" one of the 2 CD players in the unit. This unit reads CD's from the top so they should be installed in the magazines "upside down" from typical CD players. The CD player service manual helped me unjam a stuck carriage because somebody transported the box laying down loaded with CD's. A little lens cleaning & the player now works well! Thanks for you help at a great price! Joe
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I was skeptical at first but later found the manual to be good quality for the price. It took a couple hours to receive the email with the download link, well worth the wait. Thanks.
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.
pin 79: APC DET pin 80: PWR MTR 1 pin 81: PWR MTR 2 pin 82: MAIN MTR pin 83: DOLBY pin 84: FWD / REV_
: 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
Dolby test tape Milli-volt meter
Tape speed
Wow & flutter test tape Frequency counter
-3-
PN-1741D, N
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