Olympus OEP-3 Service Manual page 87

2-3-7. Replacement of Thermal Head
1. Remove the top cover. (Refer to Section 2-2-1.)
2. Remove the front panel assembly.
(Refer to Section 2-2-2.)
3. Remove the three hooks, then remove the harness
clamper.
4. Disconnect the two flexible flat cables from the
connectors (CN303 and CN304) on the PRT-13 board.
5. Remove the three screws (BVTT 3 x 6), then remove
the cartridge guide.
Flexible flat cable (18-pin)
Flexible flat
cable (28-pin)
Cartridge
guide
BVTT 3x6
OEP-3 V1 (UC)
Harness clamper
BVTT
3x6
Hook
PRT-13
board
Hook
Hook
Connector
(CN303)
Connector
(CN304)
6. Remove the coil spring from the mechanical chassis L
assembly.
7. Remove the three screws (PSW 3 x 6), then remove
the heat sink.
8. Remove the two screws (BVTT 3 x 6), then remove
the harness (for grounding) and head pressure.
9. Move the thermal head in the order of arrows 1 to 3
and remove it.
10. Remove the two screws (PSW 3 x 6), then remove the
thermal head from the head holder.
11. Disconnect the two flexible flat cables from the
thermal head.
Mechanical
chassis
Coil spring
L assembly
PSW
3x6
Heat sink
3
12. Install a new thermal head in the reverse order of steps
1 to 11.
Harness
BVTT
3x6 (for grounding)
Head pressure
1
2
1
Thermal
head
Head holder
PSW
3x6
Thermal head
Flexible flat cables
2-7