DOWNLOAD Sharp R-657SL (serv.man6) Service Manual ↓ Size: 97.35 KB | Pages: 1 in PDF or view online for FREE

Model
R-657SL (serv.man6)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
97.35 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Trouble Shooting Guide
File
r-657sl-sm6.pdf
Date

Sharp R-657SL (serv.man6) Service Manual ▷ View online

R657(W)
7 – 1
R657(W)
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 Procedure” section.
IMPORTANT:
If the oven becomes inoperative because of a blown fuse F8A. Check the monitored latch switch, monitor switch, relay RY1 and relay RY3 before
replacing the noise filter (fuse F8A).
[2] CHART
CONDITION
PROBLEM
A
B
C
E
D
E
F
F
G
Home fuse blows when power cord is
plugged into wall outlet.
"88:88"does not operate in display
when power cord is plugged into wall
outlet.
Display does not operate properly
when STOP pad is touched.
Oven lamp does not light, when door
is opened. (Display operates).
Oven does not start when START pad
is touched.(Display operates).
Fan motor does not operate (Oven
lamp lights).
Turntable motor assembly does not
operate (Oven lamp lights).
Oven or electrical parts does not stop
when cooking time is "0" or STOP
pad is touched.
Display operates properly but all
electrical parts do not operate.
Oven goes into cook cycle but shuts
down before end of cooking cycle.
Oven seems to be operating but little
or no heat is produced in oven load
(Microwave power level is set at
HIGH).
Oven does not seem to be operating
properly
during
variable
cooking
condition(Oven operates properly at
HIGH).
Grill heating elelment does not heat.
(oven seems to be operating).
Fuse F8A blows.
OFF
CONDITION
MICROWAVE
COOKING
CONDITION
GRILL
COOKING
CONDITION
TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
H.V.
RECTIFIER
ASSY
H.V.HARNESS
HIGH
V
OLTAGE
CAPACITOR
MONITORED
L
ATCH
SWITCH
STOP
SWITCH
MONITOR
S
WITCH
THERMAL
C
UT--OUT
(MG)
THERMAL
C
UT-OUT
(OVEN)
FUSE
F8A
(NOISE
F
ILTER)
FUSE
20A
NOISE
F
ILTER
TURNTABLE
M
OTOR
FAN
M
OTOR
CONTROL
U
NIT
KEY
UNIT
(MEMBRANE
SWITCH)
RELAY
R
Y1,2,3,4
GRILL
H
EATING
E
LEMENT
FOIL
PATTERN
ON
P.W.B.
POWER
S
UPPLY
C
ORD
SHORTED
W
IRE
H
ARNESS
OPENED
WIRE
HARNESS
OVEN
LAMP
BLOCKED
V
ENTILATION
OPENINGS
WRONG
O
PERATION
MIS-ADJUSTMENT
O
F
S
WITCHES
HOME
FUSE
OR
BREAKER
NO
POWER
AT
WALL
OUTLET
BLOCKED
C
OOLING
FAN
H I
J
J
K
L
M N O
COOKING
CONDITION
(COMMON)
E
Display

Sharp R-657SL (serv.man6) Service Manual ▷ Download

  • DOWNLOAD Sharp R-657SL (serv.man6) Service Manual ↓ Size: 97.35 KB | Pages: 1 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp R-657SL (serv.man6) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp R-657SL (serv.man6) Microwave Oven. Information contained in Sharp R-657SL (serv.man6) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.