Confidential
The locations of the main elements on the main circuit board unit are identified below.
CN8
CN7
Resistance Values of Printer Mechanism Components
Part Name
Carriage motor
(1034)
Receipt paper
feed motor
(1046)
3-22 Troubleshooting
Q1
Internal Element
4-phase stepping motor
4-phase stepping motor
U9
Q7
Function
Where to Check
Head carriage
Remove the cable connector
drive
connected to CN7 on the
main circuit board. Test
between pin 1 and pin 3 and
between pin 2 and pin 4.
Receipt paper
Remove the cable connector
feed
connected to CN8 on the
main circuit board. Test
between pin 1 and pin 3 and
between pin 2 and pin 4.
CN6
CN4
F3
Normal Status
Approx. 7.2
(per 1 phase)
Approx. 7.2
(per 1 phase)
Rev. B