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Very good product. Best service manual. Many thanks
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I am only search for 5 Minute, by it in 5 Minutes to and get ist in few ours! Best i found in the Internet and my Amplifer is repaired as well! Thank you
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Readable text and good copy. Very much needed if you wish to do some repairs on this fine old unit.
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Fint forløb med levering af manualen. Kvaliteten af skanningen betegnes som middel
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I found the manual to be clear concise and complete. It was of immense assistance when removing the unit as the unit was over 22 years old and the wiring diagram was unobtainable from the manufacturer. The exploded drawings were clear as were the instructions and labels.
3. Operation
A. Communication circuit
This circuit is used to communicate with the copier body.
+5V +5V R6 470 CN1,4 TXD 4 R8 R7 4.7K R64 100 3 Test pat29 C16 100PF CN1,2 DSR 2 HD74HC14FP 4
IC6.2 IC2.2
R59 4.7K 4 HD74HC14FP IC6.1 2 1 VCC-+5V GND-SGND Test pat24 6 IC6.3 5 Test pat26 80
Test pat25
IC11
79
Test pat23 C20 100PF
3
CN1,3
RXD
IC2.3 5 6
HD74LS06FP
HD74LS06FP
Test pat27 4
1 CN1,1 DTR
R63 100
3 HD74LS06FP +5V R74 10K
Test pat28
3
5 CN1,5 CN1,6 CN1,7
CN1,8
R62 100
Test pat30 C2 0.10µF
IC2.1
1
2
Test pat31 11
IC6.5 10
Test pat35
RESET SGND JINT
N.C
Main body reset
6 7 8 SGND SGND HD74HC14FP HD74LS06FP
The input and the output of each signal are as follows:
[a] DTR CN1-1 pin
The input from the main body. When LOW (0V) at IC11-4 pin, it means the main body has the control to transmit.
[b] DSR CN1-2 pin
The output in the sorter side. When HIGH (+5V) at IC11-3 pin, IC11-4 pin turns from LOW (0V) to HIGH (+5V) then to LOW again. During that period, the sorter has the control to transmit.
[c] TXD CN1-4 pin
The input from the main body. When IC11-79 pin turns from HIGH (+5V) to LOW, data reception is started.
[d] RXD CN1-3 pin
The output in the sorter side. When IC11-80 pin turns from HIGH (+5V) to LOW, data transmission is started.
[e] RESET CN1-5 pin
The reset signal from the main body. When CN1-5 pin is HIGH (+5V), the CPU (IC11) is reset.
B. Reset circuit
This circuit is the reset circuit.
+5V 2 5 VCC C23 0.10µF 4 RES
D1 DSA010 A K 3 CK 8 1 6
6
+5V
R72 10K IC6.4 19
Test pat33
+5V R75 10K 8 2
Test pat64 3
IC11
IC5 MB3773FP *RES GND CT VREF VS 7 C22 470PF
IC7.1Y
1
7
HD74LS06FP + HD74HC02FP VCC-+5V GND-SGND
C17 1µF
SGND
Main body reset
This circuit is used to generate the CPU reset signal, and is composed of IC5 and its peripheral circuits.
� 25 �
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