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1.6.1 C166 MAIN Board Assembly
The C165 MAIN board consists of a TMP96C041AF CPU, an E05B13 gate array, a program/CG ROM, a
PS-RAM, an EEPROM, etc.
1.6.2 C166 PSB/PSE Board Assembly
These boards have two AC input voltage ratings: 120 VAC (C166 PSB) and 230 VAC (C166 PSE). Both
boards consist of a transformer, switching FET, regulator IC, diode bridge, etc. The power supply board
provides +5 VDC and +35 VDC for the main board and printer mechanism.
UDN2917EB
IC11 PF Motor Driver
IC12
CR Motor Driver
SLA7024M
Head Drive
TRANSISTOR
CN2 for Option I / F
IC 1
CPU
TMP96C041AF
IC 2
GATE ARRAY
E05B13
IC 5 PS RAM
EEPROM
IC3 P-ROM
Figure 1-13 C166 MAIN Board Assembly
PC1
Photo Coupler
F1
Fuse
IC51
Switching Regulator
TL494CN
Transformaer
T1
Q1
Switching FET
DB1
Diode Bridge
IC52
OP-amp
D51
Diode
Figure 1-14 C166 PSB/PSE Board Assembly
Product Description FX-2170 Service Manual
1-36 Rev.A