Icom IC-910H, Service Manual

Page: 52 / 144

• CR-293 HIGH STABILITY CRYSTAL UNIT
q
Remove the bottom cover as shown in the diagram on
p. 3-1.
• Remove the UX-910 if you have installed it. (p. 3-1)
w
Remove 6 screws from the PLL shield cover, then lift up
the PLL shield cover.
PLL shield
cover
e
Disconnect the FFC (Flexible Flat Cable) from the DIS-
PLAY unit and the connection cable connectors from
J501 and J1051 on the MAIN unit.
r
Remove 5 screws from the PLL unit, then lift up the PLL
unit.
t
Unsolder the original reference crystal, then remove it.
• The original reference crystal unit is soldered at both top
and bottom sides of the PCB (Printed Circuit Board).
J501
Original crystal
CR-293
J1051
Flexible flat cable
Unsolder the
original
crystal.
y
Install the CR-293 and solder the leads.
u
Return the PLL unit, PLL shield cover and bottom cover
to their original positions.
CR-293 soldering
points
Original crystal soldering point
3 - 4