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as always, rapid and efficient, very good and clear prints
details clearly visible keep going this way!!!!!!
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I expect a wonderful result as alaways!!!!!!
Usually is much faster....
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Wow very wonderful and clear!!!! I will always trust them
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Providing the manual works fine, quickly and without any problems for an acceptable price. After printing the service manual it took me only a short time to repair my carradio from Clarion. Thank You! Greetings from Heiko
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I was searching a way to modify the original phono-in entry (for connection of vynil disc player, with RIAA equalization) to a line-in entry (for connection of modern analog entries, eg. ipod, mp3player).
This service manual gave me the correct hints.
It contains very useful infos for repairing and modifing the hi-fi, such as disassembling instructions, block diagrams, schematic diagrams, PCB prints, replacement parts list.
Very good!
CPU (LSI101: MSM6387-22)
Containing a sound data ROM and a DAC (Digital to Analog Convertor), the CPU provides sound waveform in accodance with the pressed key and the selected tone. The following table shows the pin functions of LSI101. Pin No. 1, 2 3 4 5 6 7 8 9 10 11 ~ 18 19, 20 21 ~ 30 Terminal TEST1, TEST2 RESET AVDD OUT AGND GND COSI COSO VDD KI0 ~ KI7 KO11, KO10 KO9 ~ KO0 Out In In In In Out In In In In/ Out Function Not used. Connected to ground. Power ON reset terminal. On: +5 V +5 V sorce for the built-in DAC Sound waveform output Ground (0 V) source for the built-in DAC Ground (0 V) source 21.725 MHz clock pulse input Not used +5 V source Input terminals from keys and switches Not used Key and switch scan signal outputs Off: 0 V
Filter Block
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.
AVDD Q101 2SC1740SQ R2106 C106 C108
R107
R108
R105
From CPU
C109
AG
To power amp
R104
AG
C107
AG
Amplifier/Voltage Regulator (IC101: AN8053N)
The right figure shows the internal block of IC101.
VCC 16
NC 15
CONT 14
5V VREG 13
NC 12
NC 11
NC PRE GND 10 9
5V REG POWER
SP AMP + 1 SPO 2 NC 3 4 5 PC-2 6 SPI 7
VREF
8 VREF
SP GND PC-1
SPM
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