User Manual
Table Of Contents
- PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
- WARNING TO SERVICE PERSONNEL
- MICROWAVE MEASUREMENT PROCEDURE
- FOREWORD AND WARNING
- PRODUCT DESCRIPTION
- GENERAL INFORMATION
- OPERATION
- TROUBLESHOOTING GUIDE
- TEST PROCEDURES
- [1] Procedure A: MAGNETRON ASSEMBLY TEST
- [2] Procedure B: POWER TRANSFORMER TEST
- [3] Procedure C: HIGH VOLTAGE RECTIFIER TEST
- [4] Procedure D: HIGH VOLTAGE CAPACITOR TEST
- [5] Procedure E: THERMAL CUT OUT TEST
- [6] Procedure F: SECONDARY INTERLOCK SWITCH TEST
- [7] Procedure F: PRIMARY INTERLOCK SYSTEM TEST
- [8] Procedure G: MONITOR SWITCH TEST
- [9] Procedure H: BLOWN MINITOR FUSE TEST
- [10] Procedure I: NOISE FILTER TEST
- [11] Procedure J: CONTROL PANEL ASSEMBLY TEST
- [12] Procedure L: RELAY TEST
- [13] Procedure M: FOIL PATTERN ON THE PRINTED WIRING BOARD TEST
- TOUCH CONTROL PANEL ASSEMBLY
- PRECAUTIONS FOR USING LEAD-FREE SOLDER
- COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
- [1] WARNING
- [2] OUTER CASE REMOVAL
- [3] POWER TRANSFORMER REMOVAL
- [4] HIGH VOLTAGE RECTIFIER ASSEMBLY AND HIGH VOLTAGE CAPACITOR REMOVAL
- [5] MAGNETRON REMOVAL
- [6] CONTROL PANEL ASSEMBLY REMOVAL
- [7] OVEN LAMP AND LAMP SOCKET REMOVAL
- [8] POSITIVE LOCK CONNECTOR (NO-CASE TYPE) REMOVAL
- [9] ANTENNA MOTOR REMOVAL
- [10] COOLING FAN MOTOR REMOVAL
- [11] POWER SUPPLY CORD REPLACEMENT
- [12] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
- [13] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
- [14] DOOR PARTS REMOVAL
- [15] ANTENNA MOTOR SHAFT REPLACEMENT
- [16] INSTALLATION OF CERAMIC SHELF
- CIRCUIT DIAGRAMS
- Parts List
R21LCF
12 – 2
[2] Control Panel Circuit (Figure S-2)
Figure S-2. Control Panel Circuit
AC
DOOR
GND
(J1)
a
b
c
d
D4
ICP1
C2
C3
+
+
C5
SP1
R41
3.3K
R42
1.5K
R40
4.7K
ZD1ZD2ZD3
HZ11A3 X 3
R1 R2
1W 510 1W 510
Q2
R5
1K
ZD6
HZ4C1
R6
4.7K
C6
RY2
RY1
Q22
KRC105S
D21
D20
D22
D30
R30
4.7K
R31
47K
C30
JF
4.7K
CF1 4MHz
Q70
Q71
Q72
Q73
D70D71D72D73
R70
R71
R72
R73
R74
430
330
240
150
100
J2
J3
2W 100
1N4005E X 4
0.1u/50V
1000u/35V
220u/16V
0.1u/50V
4.7K
27K
0.1u/50V
C31
C7
R9
R10
D10
D11
D1 D2
D3
C1
R12
2.2u/160VAC
R11
4.7K
I- 1
10u/35V
Q20
Q21
KRA101S
LD19 LD18 LD17
LD4
LD16
(
.
)(
.
)(
.
)
(
.
)(
.
)
(
.
)
(
.
)
LD6LD8
C21
C20
0.1u/50V
Q1
KTC3198
1W 1K
R3
ZD4ZD5
HZ6C3 X 2
R22
4.7K
D74D75
D76D77
D78
D79D80
D81
D82D83
D84D85
14 VDD
D31
D42
N.F15
D53
6P20
7P21
9
RESET
10
CNVSS
11
XOUT
12 XIN
13 VSS
8P22
D64
D75
INTO
1625
26
27
28
29
30
31
32
D2
D1
D0
P13
P12
P11
P10
P03
P0224
P0123
P00
22
19
AIN1
18
AIN0
17
INT1
AIN321
AIN220
4.7K
4.7K
4.7K
VRS1
10G471K
R7
27K
J5
J7
6.2K
J4
J6
C4
0.1u/50V
R20
R21
4.7K
LD20
(15M)
LD5
(2M)
LD3
(1M)
LD2
(40 S)
LD1
(2 0S)
LD15
(10M)
LD14
(9M)
LD13
(8M)
LD12
(7M)
LD11
(6M)
LD7
(3M)
LD9
(4M)
LD10
(5M)
R50
10K
SW1
AB
C
R60
R61
R62
R63
4.7K
4.7K
100K
100K
C60
C61
144567891 0111213321
CN-A
1
3
5AC
IF NOT SPECIFIED 1/10W J(±5%)
IF NOT SPECIFIED 0.01uF 50V
IF NOT SPECIFIED 1SS133 or 1SS270A
1
2
3
AC
60Hz/120V
OL,TTM,FM
MICRO
KRC101S
KTA1504
Q40
KRC101S
R8
27K
1/2W 100K
LD1 -- LD20 LTL-1CHE-011A x 20
Q70Q73:KRA101S