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There are currently no product reviews.
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Very good reproduction (copy) of original manual. Didn't have a parts list, but schematic was completely labeled with parts. Complete instructions on how to adjust mechanical functions of the 8-track deck. Well worth having and at a very reasonable cost.
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It's a full manual. All the parts are in there. I haven't found the problem yett, but I am working on it; hope I can rebuild the part myself. To make it more secure and unbreakable this time. Because the part has failed several times before and costs a lot to let it be repaired.
Thanks so much for this rich illustrated and parted manual.
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I downloaded the document. The manual was complete, well scanned and everything was legible. I could zoom in see what I needed to know. There's not much more that you can ask.
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It was complete service manual with all needed service informations. Thanks.
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El manual esta muy detallado, los numeros de partes y los esquemas de despiece son correctísimos y muy claros, tanto para los técnicos experimentados como para los novatos.
IC DESCRIPTION IC, UPD780228GF
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14-16 17 18 19 20, 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Pin Name
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I/O O O O I O O O O O O � I O � � � � � O O O I I O I I � O O O I O O � � � � � I I
Description Scan output to diode input (Active �L�). Tuner PLL chip enable output. Sound CTRL, PLL, DOLBY PROLOGIC or DSP, AC-3 VOL, GEQ. Data output.
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Pin No. 44 45 46 47, 48 49 50 51 52 53-64 65 66, 67 68 69-73 74 75 76-78 79 80 81-89 90-100
Pin Name I-SYNC-DET/I-RDS-SIG I-JOG2 I-FU-JOG1 I-KEY2, I-KEY1 I-MIC AVSS O-STB-31 POWER-LED P35-P24 P23/I-AM10K P22/I-VF.KC.EC P20/I-AC3 P19-O-P15
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I/O I I I I I � O O O O I/O I/O O I/O I/O O � � O O
Description OSD sync. AD input. RDS tuning signal level. AD input. Rotary encoder (JOG2). AD input. Function selector rotary encoder (JOG1). AD input. Key 2, 1. AD input. Microphone signal level detector. AD input. ADND. GEQ IC chip enable output.
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K-SCAN O-PLL-CE O-DATA (M) TUNE/IFC O-STB (M) O-MUTE O-CLK (M) O-OSD (CE) /I-SYNC-DET O-PRO-CE/O-DSP-CE � TM-BASE � � IC VSS VDD �
______
Tuner TUNE/IFC detection input. Sound CTRL, KEYCON strobe output.
________
System mute ON/OFF output. Sound CTRL, PLL, DOLBY PROLOGIC or DSP, AC-3 VOL, GEQ. Clock output. OSD chip enable output.
_____
Power LED ON/OFF output (Active �H�). FL segment output (P35-P24). FL segment output (P23)/supporting AM step initialization 10 kHz. FL segment output (P22, P21)/supporting VF, key control, ECHO. Diode input. FL segment output (P20)/supporting AC-3. Diode input. FL segment output (P19-P15). FL segment output (P14). Turner/stereo detection input (stereo at �L�). FL segment output (P13). Headphones insertion detection input (HP insertion at �L�). FL segment output (P12-P10). Power supply pin. � Voltage. FL segment output (P9-P1). FL grid output (G11-G1).
System power supply. ON/OFF output. DOLBY PROLOGIC or DSP chip enable output. Not used. Reference clock input for watch. IC101. Strobe output from shift register (1). Not used. GND. GND. Power supply pin. Not used. DOLBY digital (AC-3) control. CS output. DOLBY digital (AC-3) control. Clock output. DOLBY digital (AC-3) control. Data output. DOLBY digital (AC-3) control. Data input. CODEC IC (CS4226) control. Data output.
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P14/I-STEREO
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P13/I-HPMUTE P12-P10 VDD2 -VFL P9-P1 G11-G1
CS SCK SI SO SDA
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ADO/CS I-RDS-CLK I-RDS-DATA
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CODEC IC (CS4226) control. CS output. RDS clock input (external interrupt). RDS data input. Reset. Master VOL control output for SL/SR. Master VOL control output for center/SUB-woofer (TRIM control output for center/ SUB-woofer).
RESET O-CONT.1 O-CONT.2 OSD-CLK
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OSD clock output. Remote control input. OSD data output. Microprocessor clock shift output (Active �H�). Power supply pin. Connected to 5.76MHz oscillator. Connected to 5.76MHz oscillator. GND. Power supply pin. System power supply voltage monitoring. AD input. Rotary encoder (VOL). AD input.
I-RMC OSD-DATA C-SHIFT VDD1 X1 X2 VSS1 AVDD
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HOLD I-RE-VOL
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 $4.99 HTD290 AIWA
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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