R-26STM (serv.man7). Troubleshooting Guide — Sharp Home Appliance Service Manual (repair manual)

Model
R-26STM (serv.man7)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
98.63 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Troubleshooting Guide
File
r-26stm-sm7.pdf
Date

View Sharp R-26STM (serv.man7) Service Manual online

R26STM
7 – 1
R26STM
Service Manual
 
CHAPTER 7. 
TROUBLESHOOTING GUIDE
[1] FOREWORD
When troubleshooting the microwave oven, it is helpful to follow the
Sequence of Operation in performing the checks. Many of the possible
causes of trouble will require that a specific test be performed. These
tests are given a procedure letter which will be found in the "Test Pro-
cedure"section.
IMPORTANT:
If the oven becomes inoperative because of a blown fuse T6.3A in the
1st. latch switch - relay (RY1) - 2nd. interlock relay (RY2)- monitor
switch circuit, check the 1st. latch switch, relay (RY1), 2nd. interlock
relay (RY2) and monitor switch before replacing the fuse T6.3A.
[2] CHART
MAGNETRON
HIGH
VOLTAGE
T
RANSFORMER
H.V.
RECTIFIER
ASSEMBLY
HIGH
VOLTAGE
WIRE
HIGH
VOLTAGE
C
APACITOR
1ST.
LATCH
S
WITCH
2ND.
INTERLOCK
R
ELAY
CONTROL
SWITCH
MONITOR
SWITCH
TEMPERATURE
F
USE
1
50ºC
(OVEN)
FAN
M
OTOR
TURNTABLE
M
OTOR
FUSE
T6.3A
TOUCH
C
ONTROL
PANEL
RELAY
(RY-1)
RELAY
(RY-2)
FOIL
PATERN
O
N
P
.W.B.
POWER
S
UPPLY
C
ORD
SHORTED
W
IRE
H
ARNESS
OPENED
WIRE
HARNESS
OVEN
LAMP
WALL
OUTLET
MISADJUSTMENT
S
WITCH
HOME
FUSE
OR
BREAKER
BLOCKED
COOLING
F
AN
BLOCKED
VENTILATION
NOISE
F
ILTER
SWITCH
U
NIT
H.V.
FUSE
OFF
CONDITION
PROBLEM
CONDITION
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
TEST PROCEDURE
ON
CONDITION
A B C
CK
D
E
E
E F G G H K
M N
I L J
M
RE CK CK RE CK CK CK CK CK
Home fuse blows when pow-
ersupply cord is plugged into
wall outlet.
FUSE T6.3A blows when
power supply cord is plug-
ged into wall outlet.
"88:88" does not appear in
display but power supply cord
is plugged into wall outlet.
Display
does
not
operate
properly when STOP/CLEAR
button is pressed.
Oven does not start when the
START button is touched.
(Display appears)
Oven lamp does not light
(Display appears.)
Fan motor does not operate.
(Display appears.)
Turntable motor does not
operate. (Display appears.)
Oven or any electrical parts
does not stop when cooking
time is 0 or STOP button is
pressed.
Oven seems to be operating
but little or no heat is pro-
duced in oven load. (Micro-
wave power level is set at
100%)
Oven does not seems to be
operating
properly
when
70%,50%, 30% or 10% is
set. (Oven operates properly
at 100%.)
Oven goes into cook cycle
bu tshuts down before end
of cooking cycle.
Display

Download Sharp R-26STM (serv.man7) Service Manual (Repair Manual)

Here you can view online or download Sharp R-26STM (serv.man7) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp R-26STM (serv.man7) Microwave Oven. Information contained in Sharp R-26STM (serv.man7) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).