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Original well scanned manual. Got the job done. Microwave problem found & corrected. For $5 and a new magnitron from ebay, it was a cheap and good the first shot fix. Electrical schematics allowed me to mage sure every thing else was ok before cutting and order for parts. Hard to live without.
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I was very skeptical of this website, I have never downloaded manuals before. I put it on the AMEX and payed through Paypal to ensure protection. I got the manual exactly as described and now I can replace the filter capacitor for this amp. Great Price, others selling for 12.99 or more and this is the same manual. I will search out this website for other manuals. Thank you
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Manual was reasonably easy to follow. I am not an engineer or know much about electronics but with the manuals help I was able to figure out the problem, identify the part required for the repair. Replacement part cost around $30. Whilst replacing the part I was telling myself, "this aint gonna work cos it seems far too easy". Took about 15 minutes to do and my plasma TV works a treat. Would never have been able to do this without the service manual.
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It is OK, this manual help me to repair my dynacord
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Good manual. Even it is an old printed manual, it is well scanned and complete, with all drawings, schematics and parts list. Very good return for the cost.
CPU (LSI1: MSM6521-13)
Containing a sound data ROM and a DAC (Digital to Analog Converter), the CPU provides sound waveform in accordance with the pressed key and selected tone. The CPU also drives LEDs in the illuminated keyboard directly. The following table shows the pin functions of LSI1.
Pin No. 1~7 8 9 10 ~ 13 14 ~ 17 18 19 20, 21 22 23 24 ~ 26 27 28 29 30 31 ~ 38 39 ~ 46 47 ~ 58 59 60
Terminal LY1 ~ LY7 LVDD1 LGND2 LX0 ~ LX3 LX4 ~ LX7 LVDD2 GND2 COSI, COSO VDD GND1 TEST1 ~ TEST3 RESET AVDD OUT AGND KI0 ~ KI7 KO0 ~ KO7 � LGND1 LY0
In/Out Out In In Out Out In In In/Out In In In In In Out In In Out � In In
Function Keyboard LED drive signal output +5 V source for the built-in LED driver Ground (0 V) source for the built-in LED driver Keyboard LED drive signal output Not used. +5 V source for the built-in LED driver Ground (0 V) source 21.725 MHz clock pulse input/output +5 V source Ground (0 V) source Not used. Connected to ground. Reset signal input. Power OFF: 0 V, Power ON: +5 V +5 V source for the built-in DAC Sound waveform output Ground (0 V) source for the built-in DAC Input terminal for keys and switches Key and switch scan signal input Not used. Ground (0 V) source for the built-in LED driver Keyboard LED drive signal output
C12
Filter Block
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.
AVDD
T2 2SC1740SQ R12 C9
R11 C10
R13
R14
C11
AG
AG
AG
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