1AH
2-3-16
2-3-3 Operation unit PCB
MPCB
SI
SO
KS0~KS7
DEG0~DEG7
KIN0~KIN4
SEG0~SEG15
SCLK
FSYNC
Reset circuit
IC5
Key Switch
LED
7-segment
LED
LED display section
Key switch section
OPCB
ASIC
IC1
Figure 2-3-17 Operation unit PCB block diagram
Operation unit PCB (OPPCB) consists of controller ASIC (IC1), key switch matrix, LED
display matrix.
The controller ASIC (IC1) communicates serially with the main PCB (MPCB). It
exchanges key switch operation data and LED display data with the main PCB. The
serial control signals are data sending and receiving signals, the data clock (SCLK)
signal for bit synchronization and the data frame synchronization (FSYNC) signal which
is emitted at every frame.
The controller ASIC (IC1) sends scan signals (KS0 to KS7) to the key switch matrix and
determines the operational state by the data read with the return signal terminals (KIN0
to KIN4).
The controller ASIC (IC1) also emits scan signals (DEG0 - DEG7) and LED display
signals (SEG0 - SEG11) to the LED display matrix to light the LEDs and 7-segment
LEDs according to the LED lighting data received from the main PCB (MPCB).
IC5 of the reset circuit also emits a reset signal to initialize the ASIC at power on or if
the power drops excessively.
Содержание DC-2060
Страница 1: ...SERVICE MANUAL Published in Oct 99 841AH110 DC 2060 2560 DC 2060 2560...
Страница 2: ...Service Manual DC 2050 2560...
Страница 4: ......
Страница 13: ...1AH MCE THEORY AND CONSTRUCTION SECTION I I Theory and Construction Section...
Страница 14: ...1AH 1 1 Specifications 1 1 1 Specifications DC 2560 1 1 1 1 1 4 Specifications DC 2060 1 1 4...
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Страница 30: ...1AH 1 3 6 1 2 3 4 5 6 7 8 9 0 1 3 3 Drive system Figure 1 3 6 Drive system copier...
Страница 39: ...1AH 1 3 15 Figure 1 3 13 Bypass paper feed section block diagram CN2 10 CN2 14 CN2 13 MPCB BYPSOL BYPCL BYPPSW...
Страница 82: ...1AH MCE ELECTRICAL SECTION II II Electrical Section...
Страница 83: ...1AH 2 1 Electrical Parts Layout 2 1 1 Electrical parts layout 2 1 1...
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Страница 124: ...1AH MCE III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION...
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Страница 259: ...3 3 50 1AH Figure 3 3 59 Secondary mirror inclination adjustment screw Secondary mirror...
Страница 262: ...3 3 53 1AH Fourth mirror Fifth mirror Fourth fifth mirror inclination adjustment screw Figure 3 3 62...
Страница 347: ...3 3 132 1AH End Press the stop clear key Exit simulation mode A Remove the paper and reinstall the duplex unit...
Страница 350: ...1AH 3 4 PCB Initial Setting 3 4 1 Replacing the main PCB 3 4 1 3 4 2 Adjustment free variable resistors VR 3 4 4...
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