Download Epson LQ-860 - Impact Printer Specifications

REV.-A
2.2 POWER SUPPLY CIRCUIT OPERATION (MONPS/MONPSE
board)
The DC voltages required to operate the mechanisms and control circuits are supplied from the supply
board in this unit. There are two kinds of power supply boards, the MONPS board for 100 V or 120 V
operation and the MONPSE board for 220 V or 240 V operation. Refer to Table 2-18.
Since the MONPS board has almost the same structure as the MONPSE board, this section will describe
the MONPS board.
Table 2.,18. Power Supply Voltages
E=
2.2.1 MONPS/MONPSE
Boards
The MONPS and MONPSE boards generate the DC voltages shown in Table 2-19 to supply the circuits and
operate the mechanisms.
. Refer to Figure A-29 and Figure A-30 in Appendix for the entire circuit of the MONPS and MONPSE
boards.
Table 2-19. Vottages and Applications
Application
Power Voltage (DC)
+35V–GP
o CR motor drive
. PF motor drive
- Printhead solenoid drive
o CS/RF motor drive
“ Fan motor drive
+5V– GL
o JUNMM board Logic circuit power
. Power for various sensors
o Control panel power
. PF motor hold
o CS/RF motor hold
“ Optional interface board power
“ Optional cartridge power
lx (5 V)– GL
“ Reset circuit
f 12 V–GND
“ Optional l/F board power
.
Pull-Up
H1 to H24 of IC 2A
NOTE : The voltage Vx is generated on the JUNMM board. Refer to Section 2.3.1.1.
2-17