Main Components; C062 Main Board (Main Control Circuit Board) - Epson LG1-1070 Service Manual

REV.-B

1.7 MAIN COMPONENTS

The main components of the LQ-570/1070 printers are designed for easy removal and replacement
to maintain and repair the printer. The main components are:
1) CO62 MAIN board:
2) CO62 PNL board:
3) CO62 PSB/PSE board:
4) M-5El0/5E60:
Printer Mechanism M-5E 10
(LQ-570)

1.7.1 C062 MAIN Board (Main Control Circuit Board)

The CO62 MAIN Board for the LQ-570 consists of a TMP90C04 1 N g-bit CPU, an E05A50 gate array,
a PROM (5 12K), a PSRAM (256K), a mask ROM (character generator, 2M), an EEPROM, and
IC (STK-6022B). In addition to this, the board for the LQ-1070 also includes a SRAM (64K).
256K PS-RAM (6E)
(80 column)
Figure 1-12. CO62 MAIN Board (80 column and 130 column)
the main control board; the CPU on this board controls all main functions.
the control panel board.
the power supply board.
the printer mechanism.
CO6
CO62 MAIN Board
Figure l-1 1. LQ-570/1 070 Component Layout
Mask ROM
Printer Mechanism M-5E60
CPU TMP90C04 1 (IC)
64K S-RAY (IE) \
EEP ROM (4C)
1-26
(LQ-1070)
STK-6022B (2A)
I
(136 column)
a hybrid