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It has all the information you will need to fix it. The main circuit diagram is only A4 but being a PDF, you can print it to any size - I did it on two sheets of A3 and it didnt lose any detail - just made it readable when pinned up above the bench. I've found the fault, just need to buy some obscure bits to get it going again!
I cant fault the process, I paid for the manual in the morning and it was ready to download by lunch time.
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Very good copy in a 54 pages PDF archive. This is my sixth purchase here. :)
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Another excellent buy! File too clear and explanatory.
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A manual hard to find. It was very helpful to restore my device.
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I am very grateful for this manual. Without it could not repair my receiver.
FIlter Block Since the sound signall from the CPU is a stepped waveform, the filter block is added to smooth the waveform.
VDD
2SC3112B 10K 10K 6.2K
C331J
C222(H)
C562(H)
From the CPU
To main volume
1K AG AG AG
Initial Reset Circuit When batteries are set or an AC adapter is connected, the reset IC provides a low pulse to the CPU. The CPU then initializes its internal circuit.
VDD Battery set
Reset IC S8053ANO IC4
CPU MSM6626-01 LSI1
RESET
Power On/Off Circuit When the power switch is turned on, a low level differential pulse is provided to terminal MI of the CPU. Upon receipt of the pulse, the CPU starts the power ON sequence and raises the APO signal to +5 V. When the switch is off, on receiving the KO11 signal at terminal KI0, the CPU drops the APO signal to ground level to shut down power.
VDD VDD
ON
Power Switch
OFF ON MI
CPU
KO18 KI0
MSM6626-01 LSI1 APO signal OFF: 0V ON: +5 V
OFF ON
KI1 KO11
�5�
 $4.99 CTK500 CASIO
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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