Brother FAX-170 Service Manual page 75

(2) Attempt to lift up the main PCB slightly. If it is impossible to lift up the PCB to an extent
which allows you to disconnect the harnesses, you may not have unhooked the power
supply harness core or cutter HP sensor harness core from bosses "C" or "D," respec-
tively. Remove the ROM cover (refer to Section 1.2) and unhook those cores from
bosses "C" and "D" illustrated below.
Boss "C"
(Unhook the power supply
harness core from here.)
Motor harness
Boss "D"
(Unhook the cutter HP sensor
harness core from here.)
(3) Slightly lift up the rear edge of the main PCB and disconnect the following harnesses
from the main PCB:
• Cutter home position (HP) sensor harness (2-pin)
• Main-panel harness (5-pin)
• Main-mike harness (2-pin)
• Speaker harness (2-pin)
• Motor harness (6-pin)
• Power supply harness (6-pin)
• Solenoid harness (2-pin)
• Recording head harness (12-pin)
• CIS harness (7-pin)
(4) Lift up the power supply PCB.
Power supply harness
(Rear)
Relay "F"
Rib "E"
Solenoid
harness
IV – 31
Cutter HP sensor
harness
Resistors
Recording
PE sensor actuator
head harness
Main PCB
CIS harness
Electrolytic
capacitor