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There are currently no product reviews.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
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Dear Sirs,
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
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the big video recorder format s-vhs many features delicate in loading system of the cassette. Such machines are no longer manufactured, it would be too expensive.
 ;
THIS MANUAL IS VERY GOOD AND VERY CLEAR
PLEASE NOTE IT DOES NOT CONTAIN THE SETUP INFORMATION TO ALIGHN THE GEARS IN THE CD MECH IT DOES SHOW ALL THE PARTS AND THEIR LOCATIONS .
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Complete service and operation manual. All schematics are there, all circuit boards AND add-on boards. Including exploded views ,component names and specifications. Also electrical and mechanical adjustment procedures are in this manual. This manual also covers the more advanced BR-S811E unit. Scan quality is fair and usable.
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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