Epson TM-H6000 Service Manual page 19

Confidential
Table1-2 Test points on the printer mechanism
Name of
Mechanism Part Name
Mechanism Lever drive coil
assembly A (left side
(M-U675) when facing
the front of the
printer.)
Lever drive coil
B (right side
when facing
the front of the
printer.)
Carriage motor
Lever drive
motor assembly
Paper feed
motor
1-10 Troubleshooting
Internal Element Function
• Form stopper
Coil
operation
• Slip paper roller
(sub) operation
• Platen open
Coil
and close.
• Cylindrical
printer platen
open and close
4 phase stepping Head carriage
motor drive
• Form stopper
DC brush motor
operation
• Slip paper roller
(sub) operation
• Platen open
and close
• Endorsement
printer platen
open and close
4 phase stepping Slip paper feed
motor
Where to Check Normal Status
Approx. 70 Ω
Remove the cable
connector
connected to
CN30 on the main
circuit board unit
and test between
pin 26 and pin 27.
Approx. 70 Ω
Remove the cable
connector
connected to
CN30 on the main
circuit board unit
and test between
pin 26 and pin 28.
Approx. 4.5 Ω (per
Remove the cable
connector 1 phase)
connected to
CN30 on the main
circuit board unit
and test between
pin 1 and pin 2
and between
pin 3 and pin 4.
Remove the cable The line must be
connector continued.
connected to
CN30 on the main
circuit board unit
and test between
pin 29 and pin 30.
Approx. 8 Ω (per 1
Remove the cable
connector phase)
connected to
CN30 on the main
circuit board unit
and test between
pin 17 and pin 18
and between
pin 19 and pin 20.
Rev. A