Icom IC-7800 - Page 511

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• BOTTOM VIEW (NETWORK BOARD)

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Table of Contents

ADDENDUM Dec. 20091
- PARTS LIST2
- BOARD LAYOUTS65
- VOLTAGE DIAGRAMS67
ADDENDUM Feb. 200979
- PARTS LIST80
- BOARD LAYOUTS139
- VOLTAGE DIAGRAMS143
ADDENDUM Aug.2008157
- PARTS LIST158
- BOARD LAYOUTS214
- VOLTAGE DIAGRAMS216
ADDENDUM Jul. 2008245
- PARTS LIST246
- BOARD LAYOUTS302
- VOLTAGE DIAGRAMS304
TOP COVER333
INTRODUCTION334
TABLE OF CONTENTS335
1.SPECIFICATIONS337
2.INSIDE VIEWS338
- TOP VIEW339
- BOTTOM VIEW339
- MAIN UNIT340
- DSP A/B BOARDS341
- DSP TX BOARD341
- LOGIC UNIT342
- SCOPE UNIT342
- RXPLL-A UNIT343
- RXPLL-B UNIT343
- OSC UNIT344
- PA200W BOARD344
3.CIRCUIT DESCRIPTION345
- RECEIVER CIRCUITS345
- TRANSMITTER CIRCUITS349
- PLL CIRCUITS351
- ANTENNA TUNER CIRCUITS355
- SCOPE CIRCUITS356
- POWER SUPPLY CIRCUITS357
- PORT ALLOCATIONS358
- IF AND LO FREQUENCY LIST372
4.ADJUSTMENT PRCEDURES374
- PREPARATION BEFORE SERVICING374
- OSC UNIT ADJUSTMENTS375
- RXPLL-A UNIT ADJUSTMENTS377
- RXPLL-B UNIT ADJUSTMENTS383
- PA200W BOARD ADJUSTMENTS389
- TUNER ADJUSTMENT391
- MAIN UNIT ADJUSTMENTS393
- SCOPE UNIT ADJUSTMENTS395
- SOFTWARE ADJUSTMENTS397
5.PARTS LIST400
- REPLACEMENT UNITS400
- FRONT UNIT400
- VR-A BOARD400
- VR-B BOARD400
- VR-C BOARD400
- VR-D BOARD401
- SW-A BOARD401
- SW-B BOARD401
- SW-C BOARD402
- JACK BOARD402
- MIC BOARD402
- TENKEY BOARD403
- PBT1 BOARD403
- PBT2 BOARD403
- LED BOARD403
- CF BOARD404
- DISPLAY BOARD404
- RXPLL-A UNIT406
- RXPLL-B UNIT414
- BPF UNIT422
- MAIN UNIT428
- DSP-A BOARD436
- DSP-B BOARD438
- DSP-TX BOARD440
- SCOPE UNIT442
- LOGIC UNIT446
- PA UNIT453
- PA200W BOARD453
- DC-DC UNIT454
- TUNER UNIT455
- CTRL BOARD455
- ANT-SW UNIT458
- OSC UNIT458
- REG UNIT459
- DIGSEL UNIT459
- NETWORK BOARD462
- FILTER UNIT462
- MEMORY BOARD463
6.MECHANICAL PARTS AND DIS ASSMBLY disassembly464
7.SEMI-CONDUCTOR INFORMATION476
- TRANSISTOR AND FET'S476
- DIODES477
8.BOARD LAYOUTS478
- DISPLAY BOARD478
- SW-A BOARD480
- SW-B BOARD480
- SW-C BOARD480
- VR-A BOARD482
- VR-B BOARD482
- VR-C BOARD482
- VR-D BOARD482
- JACK BOARD482
- MIC BOARD482
- CF BOARD482
- TENKEY BOARD484
- LED BOARD484
- PBT1 BOARD484
- PBT2 BOARD484
- LOGIC UNIT486
- MEMORY BOARD488
- MAIN UNIT490
- DSP-A/DSP-B BOARDS492
- DSP-TX BOARD494
- SCOPE UNIT496
- RXPLL-A UNIT498
- RXPLL-B UNIT500
- DIGSEL UNIT502
- OSC UNIT504
- ANT-SW UNIT506
- FILTER UNIT508
- NETWORK BOARD510
- CTRL BOARD512
- BPF UNIT514
- PA200W BOARD516
- DC-DC UNIT518
9.BLOCK DIAGRAM520
10.WIRING DIAGRAMS523
11.VOLTAGE DIAGRAMS525
- DISPLAY BOARD525
- CF BOARD525
- SW-A BOARD526
- VR-B BOARD526
- VR-C BOARD526
- VR-A BOARD526
- MIC BOARD526
- JACK BOARD526
- VR-D BOARD526
- SW-B BOARD526
- TENKY BOARD527
- SW-C BOARD528
- PBT1 BOARD528
- PBT2 BOARD528
- LED BOARD528
- LOGIC UNIT AND MEMORY BOARD529
- MAIN UNIT533
- DSP-A/DSP-B BOARDS536
- DSP-TX BOARD537
- SCOPE UNIT538
- RXPLL-A/RXPLL-B UNITS542
- DIGSEL UNIT545
- OSC UNIT547
- ANT-SW UNIT548
- FILTER UNIT548
- BPF UNIT549
- NETWORK BOARD550
- CTRL BOARD551
- PA200W BOARD552
- DC-DC UNIT553
ADDRESS554
BACK COVER555

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