Panasonic UF-590 / UF-790 Service Manual ▷ View online
41
2.2.18.
Toner Sensor (513), Laser Unit [LSU] (512), SNS3 PC Board (1009)
(1) Remove the Transmit Guide Assembly
(Refer to 2.2.4.).
(2) 2 Screws (19).
(3) Remove Ground Wire (542).
(4) Remove the CCD Shield Plate (533).
(3) Remove Ground Wire (542).
(4) Remove the CCD Shield Plate (533).
(5) 1 Screw (19).
(6) Disconnect Connector CN84 on the SNS3 PC
(6) Disconnect Connector CN84 on the SNS3 PC
Board (1009).
(7) Remove the Toner Sensor Spring Plate (506)
Assembly.
Note:
When reinstalling, make sure that the Toner
Sensor Spring Plate is inserted into the 2 notches
in the main frame as shown in the illustration.
Sensor Spring Plate is inserted into the 2 notches
in the main frame as shown in the illustration.
(8) Remove the Toner Sensor (513).
(9) Disconnect the Connector on the Toner Sensor.
(9) Disconnect the Connector on the Toner Sensor.
(2)
(4)
(3)
(6)
(5)
(7)
UF-590
(8)
(9)
UF-590
UF-790
(8)
(9)
42
(10) Disconnect 2 Connectors on the Laser Unit
(512).
(11) 4 Screws (1Y).
(12) Remove the Laser Unit (512).
(13) Disconnect Connectors CN83 and CN84 on the
SNS3 PC Board (1009).
(14) 1 Screw (19).
(15) Lift up the No Paper Actuator (525) and
(15) Lift up the No Paper Actuator (525) and
Remove the SNS3 PC Board (1009).
(10)
(11)
(11)
(11)x4
(12)
(14)
(14)
(13)
(13)
(13)
(14)
(15)
43
2.2.19.
Bias Transfer Roller (604)
(1) Remove the CCD Shield Plate
(Refer to 2.2.18.).
(2) 2 Screws (19).
(3) Remove the BTR Guide (602).
(3) Remove the BTR Guide (602).
(4) Release the Latch Hook on the Transfer Guide
(601) Assembly as illustrated and remove the
Bias Transfer Roller (604).
Caution:
Bias Transfer Roller (604).
Caution:
• Do not touch the surface of the Bias Transfer
Roller. Clean the Bias Transfer Roller only with a
dry cloth.
dry cloth.
• When cleaning or replacing the Bias Transfer
Roller, clean both sides of the Transfer Guide
with isopropyl alcohol.
with isopropyl alcohol.
(2)
(3)
(4)
White
Black
44
2.2.20.
SNS2 PC Board (1010)
(1) Place the machine on its rear side.
(2) 1 Screw (19).
(3) Remove the Plate A (507).
(2) 1 Screw (19).
(3) Remove the Plate A (507).
(4) 1 Screw (19).
(5) Disconnect Connector CN82 (538) on the SNS2
(5) Disconnect Connector CN82 (538) on the SNS2
PC Board (1010).
(6) Remove the SNS2 PC Board (1010).
(3)
(2)
(5)
(4)
(6)
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