Sharp R-771M (serv.man8) Service Manual / Technical Bulletin ▷ View online
Sharp Electronics (UK) Limited
Reference TB-M9902167
Revision 2
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
MWO990209
Month of Issue: February 1999
Classification: White
MICROWAVE TECHNICAL BULLETIN
Page 1 of 3
MODELS
R771M
REASON There are two printing errors in the service manual as listed below.
ACTION Please update the service manual with the attached pages.
Page 16: Correction required to the statment 'components with potential above' should
read 250V not 240V.
read 250V not 240V.
Page 23: Control panel illistration
16
771M -
SCHEMATIC DIAGRAM
Figure S-1. Schematic Diagram
RED
ORG
WHT/18
NO
BLK/18
HEATER
BOTTOM
BRN/18
ORG
/18
BLU/16
/18
RED
/18
ORG
ORG
/18
TOP HEATER
COM
BLU/16
WHT
WHT/16
WIRE COLOUR CODE & SYMBOL
RED : RED WHT : WHITE
BRN : BROWN
ORG : ORANGE
BLK : BLACK
BLK : BLACK
BLU : BLUE
GRY : GREY
GRY : GREY
GRN : GREEN
HV : HIGH VOLTAGE WIRE
/16 : WIRE THICKNESS = AWG16
/18 : WIRE THICKNESS = AWG18
/16 : WIRE THICKNESS = AWG16
/18 : WIRE THICKNESS = AWG18
NO INDICATION SHOWS WIRE THICKNESS = AWG22
WHT
GRY
GRY
WHT/16
WHT/18
BRN/18
BLK
WHT/18
RED/18
BRN
NC
SWITCH
MONITOR
CUT-OUT
THERMAL
MG
FILTER
NOISE
F8A
FUSE
RY
4
4
COM
N.O
FUSE 15A
EARTH
BLU
BRN
NEUTRAL
LIVE
NOISE SUPPRESSION COIL
/15
/15
G-Y/15
N
L
10M/0.5W
4700p/250V
4700p/250V
680K/0.5W
1.16 F
AC2100V
CAPACITOR
H.V. RECTIFIER
RECTIFIER
ASYMMETRIC
TRANSFORMER
POWER
MAGNETRON
TURNTABLE
MOTOR
TM
T
FAN
MOTOR
FM
1ST
LATCH
LATCH
CUT-OUT
THERMAL
OVEN
OL
OVEN LAMP
UNIT
CONTROL
N.O
COM
N.O
COM
B2
B1
RY
2
2
RY
3
3
RY
1
1
A3
RY
5
5
A7
A5
A1
SWITCH
DOOR
B3
B4
STOR
THERMI-
0.22 /250V
*
*
*
*
*
*
INDICATES PARTS WITH POTENTIALS OVER 250V
230-240V 50Hz
23
771M -
CONTROL PANEL PARTS
EXPLODED ILLUSTRATIONS
DOOR PARTS
MISCELLANEOUS
3-1D
3-1G
3-1F
3 - 1
3 - 2
3-15
3-15
3 - 3
3-11
3 - 9
3 - 5
3-10
3 - 7
3-12
3 - 4
3-13
3 - 8
3 - 6
3-14
5-7
5-7
5-6
5-2
5-1
5-8
5-3
5-5
Actual wire harness may be different than illustration.
6-5
6-8
6-2
6-7
6-9
6-6
5-4
Display