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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.
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very helpful, I could not have cleaned motherboard and replaced the main fan without it
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Good manual, schematics nice and clear with good quality scanning. Woul dhave been nice to have immediate access after purchasing though.
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I was very glad recieving the service manal from You. Manuals were delivered promptly and were correct as advertised. A complete and very usefull service manual with all details. Thank you!
DAC (IC11: UPD6376GS)
The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into analog waveforms by each channel and output them separately. The following table shows the pin functions of IC11.
Pin No. 1 2 3 4 5 6 7, 8 9 10 11 12 13 14 15 16
Terminal SEL D.GND NC DVDD A.GND R.OUT A.VDD R.REF L.REF L.OUT A.GND LRCK LRSEL SI CLK
In/Out In In � In In
Function Mode selection terminal. Connected to ground. Ground (0 V) source for the internal digit circuit Not used. +5 V source for the internal digital circuit Ground (0 V) source for the right channel Right channel sound waveform output +5 V source for the internal analog circuit Right channel reference voltage terminal Left channel reference voltage terminal Left channel sound waveform output Ground (0 V) source for the left channel Word clock input Not used. Connected to ground. Sound data input Bit clock input
KEY CONTROLLER (LSI16: HG52E35P)
The key controller generates key scan signals and provides them to the keyboard. By counting the time between first-key input signal FI and second-key SI from the keyboard, the key controller detects key velocity. The note number and its velocity data are read at regular intervals by the CPU.
RDAB LSI17 HG52E35P WRAB CLKA HGB
Key Controller LSI16 HG52E35P CRDB CWRB CKI CCSB RESB CD0 KC0 KC7 Key scan signal
~
Out In In In
Out In In In In In
Keyboard
KC
~
RESET Data bus
First contact FI0 SI0 Key input signal FI9 SI9 FI SI Second contact
CD7 Address bus CA0 ~ CA2
� 10 �
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