Sharp MX-M363N / MX-M363U / MX-M503N / MX-M503U (serv.man18) Service Manual ▷ View online
MX-M503N Dehumidifying heater 27 – 1
MX-M503N
Service Manual
[27] Dehumidifying heater
1. Parts included
2. Installation
<Note before installation>
Before starting installation, check to insure that the data lamp on
the operation panel does not light up or blink.
Before starting installation, check to insure that the data lamp on
the operation panel does not light up or blink.
A. Removal of the rear cabinet and the left rear
lower cabinet
1)
Remove the screw, and remove the rear cabinet.
2)
Remove the screw, and remove the left rear lower cabinet.
B. Installation of the heater electric component
kit
(1) Attaching the dehumidifier heater switch
1)
Attach the dehumidifier heater switch (package part No. 1) to
the frame.
the frame.
NOTE: Install the dehumidifier heater switch so that the side of the
mounting terminal post is the inward side of the main unit.
Kit name
Kit part code
Package
part No.
Description
Part code
Price
rank
Q'ty
Remarks
Heater electric
component kit
component kit
DKIT-0391FCZZ
1
Dehumidifier heater switch
QSW-C9294QCZZ
AF
1
2
Label for heater switch
TLABZ5256FCZZ
AH
1
3
Supporter
LSUPP0118FCPZ
AB
5
4
WH PWB
CPWBF1675FC338
AQ
1
5
AC-WH harness 1
DHAI-3755FCZZ
AH
1
–
AC-WH harness 2
DHAI-3756FCZZ
AE
1
Not used in this model
Heater kit
DKIT-0385FCZZ
(120V series)
DKIT-0386FCZZ
(230V series)
(120V series)
DKIT-0386FCZZ
(230V series)
6
Heater (120V series)
RHETP0131FCPZ
BE
1
Heater (230V series)
RHETP0132FCPZ
7
Heater mounting plate
LPLTM6089FCZZ
AK
1
8
Screw (M3x6 S-tight)
XHBS730P06000
AC
3
9
T-Heater cover
PCOVP1654FCZ2
AN
1
10
Caution label (For high temperature)
TCAUH1035FCZZ
AC
1
11
Screw (M3x5 S-tight)
XHBS730P05000
AA
1
12
Omega lock
LHLDW1334FCZZ
AA
1
Scanner heater kit
DKIT-0383FCZZ
(120V series)
DKIT-0384FCZZ
(230V series)
(120V series)
DKIT-0384FCZZ
(230V series)
13
Scanner heater (120V series)
RHETP0129FCPZ
AX
1
Scanner heater (230V series)
RHETP0130FCPZ
14
Heater fixing plate
LPLTM6923FCZZ
AG
1
15
Banding band
LBNDJ0013FCZ1
AE
2
16
Clamp
LHLDW7011XCZZ
AB
5
17
Screw (M3x4 Round-tipped)
LX-BZ1041FCZZ
AB
2
18
Screw (M4x6 Bind machine screw)
XBBS740P06000
AA
1
19
Snap band
LBNDJ0043FCZZ
AA
1
1
2
MX-M503N Dehumidifying heater 27 – 2
2)
Cut the switch part of the left rear lower cabinet.
NOTE: Be careful not to damage the cabinet.
3)
Attach the label for heater switch (package part No. 2) to the
left rear lower cabinet.
left rear lower cabinet.
NOTE: Wipe the surface where the label is to be affixed with alco-
hol, then attach the label along the concave on left rear
lower cabinet.
lower cabinet.
(2) Installation of the WH PWB
1)
Remove the screw, and remove the AC-cable connection plate
(only for 120V series), or remove the inlet mounting plate (only
for 230V series).
Remove the core (This procedure only applies to the 230V
series).
(only for 120V series), or remove the inlet mounting plate (only
for 230V series).
Remove the core (This procedure only applies to the 230V
series).
2)
Remove the snap band. Insert the supporter (package part No.
3) to the frame of the power unit, and attach the WH PWB
(package part No. 4) on it.
3) to the frame of the power unit, and attach the WH PWB
(package part No. 4) on it.
NOTE: Be careful not to break the PWB when mounting the PWB
to the supporters.
3)
Connect the harness to the WH PWB.
4)
Connect the AC-WH harness 1 (package part No. 5) to the AC
PWB, the WH PWB and the dehumidifier heater switch.
PWB, the WH PWB and the dehumidifier heater switch.
NOTE: The AC-WH harness 1 should pass under the MSW har-
ness.
DH
PO
WER
PO
WER
120V Series
230V Series
MX-M503N Dehumidifying heater 27 – 3
C. Installation of the heater kit
(1) Assembling of the heater unit
1)
Attach the heater (package part No. 6) to the heater mounting
plate (package part No. 7), and secure it with the screw (M3x6
S-tight) (package part No. 8).
plate (package part No. 7), and secure it with the screw (M3x6
S-tight) (package part No. 8).
2)
Attach the heater mounting plate to the T-Heater cover (pack-
age part No. 9), and secure it with the screw (M3x6 S-tight)
(package part No. 8).
Attach the snap band of the heater harness to the T-Heater
cover.
age part No. 9), and secure it with the screw (M3x6 S-tight)
(package part No. 8).
Attach the snap band of the heater harness to the T-Heater
cover.
NOTE: After installing, check that the harness of the heater go
straight into the T-Heater cover.
3)
Attach the caution label (package part No. 10) to the T-Heater
cover.
cover.
NOTE: Wipe the surface where the label is to be affixed with alco-
hol, then attach the label along the reference line.
(2) Installation of the heater unit
1)
Remove the tray 1 and the tray 2.
2)
Install the heater unit to the main unit, and secure it with the
screw (M3x5 S-tight) (package part No.11).
Pass the harness of the heater through the hole on the main
unit frame, and attach the snap band.
screw (M3x5 S-tight) (package part No.11).
Pass the harness of the heater through the hole on the main
unit frame, and attach the snap band.
3)
Pass the harness of heater that arrange behind the main body
through the wire saddle, and connect it to the WH PWB.
Bind the harness of the heater and the AC-DC WH harness
with the omega lock (package part No. 12).
through the wire saddle, and connect it to the WH PWB.
Bind the harness of the heater and the AC-DC WH harness
with the omega lock (package part No. 12).
Reference line
Reference
line
line
MX-M503N Dehumidifying heater 27 – 4
4)
Attach the core (This procedure only applies to the 230V
series).
Attach the AC-cable connection plate (only for 120V series), or
attach the inlet mounting plate (only for 230V series). Secure it
with screw.
series).
Attach the AC-cable connection plate (only for 120V series), or
attach the inlet mounting plate (only for 230V series). Secure it
with screw.
NOTE: When installing, be careful to biting the wire.
D. Installation of the rear cabinet and the left rear
lower cabinet
1)
Install the left rear lower cabinet and secure it with the screw.
2)
Install the rear cabinet and secure it with the screw.
E. Installation of the scanner heater kit
(1) Assembling of the scanner heater unit
1)
Secure the marking position on the harness of the scanner
heater (package part No.13) to the heater fixing plate (package
part No.14) with the banding band (package part No.15).
heater (package part No.13) to the heater fixing plate (package
part No.14) with the banding band (package part No.15).
2)
Extend the harness, and secure the other position of it with
banding band (packing part No.15).
banding band (packing part No.15).
3)
Tighten the snap band and cut its tip to approx. 5 mm or less.
Slide the banding band head to the square hole (Part that is
enclosed by the mark).
Slide the banding band head to the square hole (Part that is
enclosed by the mark).
NOTE: The banding band head and cut tip must not protrude
behind the heater fixing plate.
120V Series
230V Series
1
2
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