Epson LX-810 Technical Manual page 150

Problem Symptom
does not op-
crate at all
Carriage op-
eration is un- ence Volt-
stable (lack
of torque)
Table 5-4. TAMA Board Unit Repair (Continued)
Cause
At IC 1A, check the input signal at pin 5
IA is and the output waveform at pin 1
defective.
The refer- Check transistor Q 17, Q18 and Q19.
age generat-
ing circuit is
faulty.
Check point
Pin 1
Pin 5
5-15
REV.-A
Solution
Replace 3B
or 1A.
Replace