Panasonic UF-490 (serv.man2) Service Manual ▷ View online
21
2.2.3.
Face Plate, Directory Sheet, Start Key, Panel Cover Assembly, PNL PC Board
Assembly, LCD Holder
Assembly, LCD Holder
(1) Open the Control Panel Unit.
(2) Release 2 Latch Hooks on the Face Plate (102)
(2) Release 2 Latch Hooks on the Face Plate (102)
using a Straight Edge Screwdriver.
(3) Remove the Face Plate (102).
(4) Remove the Directory Sheet (104).
(5) Remove the Start Key (112).
(5) Remove the Start Key (112).
(6) Open the Panel Cover Assembly (103).
(7) 2 Screws (19).
(7) 2 Screws (19).
(8) 2 Screws (19).
(9) Release 6 Latch Hooks.
(9) Release 6 Latch Hooks.
(10) Remove the Panel Cover Assembly (103).
(3)
(2)
(1)
(5)
(4)
(7)
(6)
(8)
(9)
(10)
(9)
(9)
22
(11) Disconnect the PNL Harness on the PNL PC
Board (1004).
(12) 9 Screws (7B).
(13) Remove Sensor PC Board releasing 2 Latch
Hooks.
(14) Release 3 Latch Hooks.
(15) Remove the PNL PC Board Assembly (703).
(15) Remove the PNL PC Board Assembly (703).
(16) Release 2 Latch Hooks.
(17) Remove the LCD Holder (113).
(18) Remove the PNL PCB (703).
(17) Remove the LCD Holder (113).
(18) Remove the PNL PCB (703).
Note: Before installing the new PNL PCB
• Remove the protective plastic film from the LCD.
• Snap off the Sensor PCB from the upper right
• Snap off the Sensor PCB from the upper right
corner of the PNL PCB.
• Snap off the protective connector cover.
(11)
(12)
(12)
(12)
(12)
(15)
(13)
(14)
(16)
(16)
(17)
(18)
23
2.2.4.
SC Plate, Speaker, SC PC Board, Base Plate Assembly, ACI PC Board,
Power Supply Unit
Power Supply Unit
(1) 5 Screws (19).
(2) Remove the SC Plate (603).
(2) Remove the SC Plate (603).
(3) Disconnect the SPK Harness (1005) on the SC
PC Board (CN2).
(4) Remove the Speaker Bracket (611).
(5) Remove the Speaker (612).
(5) Remove the Speaker (612).
(6) Disconnect all Connectors on the SC PC Board.
Note:
CN 4 and 6 (Orange) cannot be removed
(soldered).
Remove CN103 (White) from the Power
Supply Unit.
(soldered).
Remove CN103 (White) from the Power
Supply Unit.
(7) 6 Screws (19) and 2 Screws on Centronics I/F
Connector.
(8) Remove the SC PC Board (701).
Note:
When re-installing the SC PC Board, be
careful of the position of the Sensor
careful of the position of the Sensor
(9) 4 Screws (19).
(10) Remove the Base Plate Assembly (602).
(1)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(7)
(7)
(6)
(6)
(6)
(9)
(10)
(9)
24
(11) Disconnect the ACI Connector on the Power
Unit (CN101).
(12) 1 Screw (35).
(13) Remove the ACI PC Board (707).
(13) Remove the ACI PC Board (707).
(14) Disconnect the HEAT1 Harness on the Power
Supply Unit (CN102).
(15) 4 Screws (62).
(16) Remove the Power Supply Unit (702).
(16) Remove the Power Supply Unit (702).
(11)
(12)
(13)
(14)
(16)
(15)
(15)
Click on the first or last page to see other UF-490 (serv.man2) service manuals if exist.