Main Components; Main Control Board; Power Supply Board; Figure 1-12. C172 Main Board Component Layout - Epson Stylus 1500 Service Manual

General Description

1.8 MAIN COMPONENTS

The main components of the Stylus 1500 are designed for easy removal and repair. They are as follows:
o Main control board (C172 MAIN Board)
o Power supply board (C172 PSB/PSE Board)
o Control panel board (C172 PNL Board)
o Printer mechanism (M-4E60)
o Housing
1.8.1 Main Control Board (C172 MAIN Board)
This board consists of a CPU (TMP95C061AF), gate array (E05B16), ROM (CG), PROM, DRAM,
EEPROM, motor driver ICs, printhead driver circuits, etc.
Common Driver

Figure 1-12. C172 MAIN Board Component Layout

1.8.2 Power Supply Board (C172 PSB/PSE Board)
This board consists of a transformer, switching FET, regulator IC, diode bridge, etc. This board has two
ratings for input AC voltages (120 VAC/220-240 VAC). The power switch is equipped with a secondary
circuit that allows the CPU to remain active (min. 20 sec.) after the printer is turned off.

Figure 1-13. C172 PSB/PSE Board Component Layout

1-32
EEPROM
RESET IC
PF Motor Driver (UDN2917 )
CR Motor Driver (SLA7043M)
Regulator IC
Fus e
Diode Bridge
Stylus 1500 Service Manual
MROM Lithium Battery
DRAM
CPU (TMP95C061AF)
Gate Array (E05B16)
Transformer
Switching FET
Rev. A