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4-2
• THE LOCATION OF ADJUST/CHECK POINTS ON THE MAIN UNIT
<BOTTOM VIEW>
<TOP VIEW>
4-2 ADJUSTMENT ON THE MAIN UNIT
ADJUSTMENT ITEM
TRANSCEIVER'S CONDITION OPERATION
CHECK
POINT
ADJUST
POINT
VALUE
COIL PRESET
• Receive
• Set the coils as follows.
–
L4201
L4202
L4251
MIXER BALANCE
• Frequency
: 1.821 MHz
• Mode
: LSB
• PREAMP
: OFF
• Receive
1) Connect the millivoltmeter to
[SP].
2) Adjust the noise level.
[SP]
R3237
Minimum noise level
MIXER BALANCE
Adjust point
C3019
C3031
C3104
C3111
C3121
14
13
C
13
13
C
C3201
C3202
C3231
C3233
C3234
C3235
C3236
C3237
C3238
C3239
C3240
C3241
C3242
C3243
C3251
C3252
C3254
C3255
C3256
D3231
D3252
D3253
EP3251
5
103
L3105
L3111
L3113
L3121
L3122
L3131
L3134
L3141
L3144
L3201
L3207
L3208
L3231
L3232
L3233
L3234
L3235
L3237
L3238
L3241
L3242
L3251
L3253
L3254
MP3231
Q3012
Q3013
Q3111
Q3121
Q3131
Q3141
Q3231
Q3232
Q3233
Q3234
Q3312
R3015
R3016
R3111
R3112
R3113
R3121
R3122
R3123
R3131
R3132
R3133
R3141
R3142
R3143
R3151
R3152
R3201
R3215
R3216
R3231
R3232
R3233
R3234
R3235
R3237
R3238
R3241
R3242
R3251
R3254
R3255
R3256
R3258
COIL PRESET
Adjust point
C3
C310
C1501
C1502
C1503
C1504
C1506
C1507
C1508
C1509
C1510
C1513
C1514
C1517
C1521
71
72
73
75
C4109
C4202
C4203
C4204
C4205
C4207
C4208
C4209
C4210
C4212
C4252
C4253
C4255
C4256
C4257
C4258
C4260
C4262
C4605
CP1501
CP1502
D1501
D1502
D1503
D1504
D1505
D1506
D1507
D1511
D1512
D1513
D1514
D1515
D1516
D4102
D4152
D4201
D4202
D4203
D4204
D4251
D4252
EP408
EP409
EP410
EP411
EP412
EP413
EP414
EP415
EP416
EP417
EP418
EP419
EP420
EP4104
EP4601
IC13
J401
J401
L4201
L4202
L4251
L4252
MP4002
Q1453Q1456
Q1501
Q1502
Q1505
Q4201
Q4251
R24
R25
R26
R27
R421
R1501
R1502
R1503
R1504
R1505
R1506
R1507
R1510
R1512
R1513
R1514
R1515
R1517
R1518
R1519
R1520
R1522
R1523
R1524
R1526
R1528
R1529
R1530
R1531
R1532
R1534
R1536
R1537
R1538
R1539
R1540
R1541
R1542
R1543
R1544
R1545
R1546
R1547
R1548
R1550
R1551
R1557
R4102
R4104
R4153
R4207
R4211
R4215
R4252
R4254
R4255
R4261
R4531
R4532
9
L4201
12
L4251
L4202
MIXER BALANCE
Check point
3 rotations
Core
2.5 rotations
Core
Core’s Bottom