Epson LX-810 - Page 148

REV.-A
Table 5-4. TAMA Board Unit Repair (Continued)
Problem
rhe printer
~oes not op-
?rate at all.
Symptom
The CPU is
not
Dperating.
Cause
rhe reset
:ircuit is not
]perating.
selection of
:ontrol ROM
s abnormal.
IAM is
Iefective.
Check point
Check the Voltage Waveforms at the
+ 24V and for the RESET signal.
Check pin 54 of
IC 2C for a changing
signal HIGH/LOW.
Solution
~eplace Q5.
~eplace
C3C.
leplace
C3D.
5-13