Epson LQ-2550 Technical Manual page 89

REV.-A
R e s e t C i r c u i t
2.3.1
Figure 2-36 shows the reset circuit.
After being input to the E05A 10AA gate array (NIMU: 14A), the reset signal resets the gate array, then
is sent out to the other devices. Reset operation (hardware reset) is performed
1. The printer power is turned on or off.
2. A low ~ signal is input from the host computer.
3. A identity/font module is installed or removed with the power on.
EXTERNAL
MMU [1 4A)
Figure 2-36. Reset Circuit
2-42
when:
MAIN-CPU( 13A)
On
RESET
ROMA BOARD
of
LS 175 (14C)
RESET of MCU (4B)
RESET of MCU (3B)
of
RESET
T
O
RESET of CN2
EXTERNAL
)
---