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Kenwood Manuals
Transceiver
TS-990S
Service manual
Table Of Contents - Kenwood TS-990S Service Manual
Hf/50mhz transceiver & external speaker
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Also See for TS-990S
:
Instruction manual
(290 pages)
,
In-depth manual
(107 pages)
,
Manual
(62 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Table of Contents
Controls And Knobs
1
Safety Check After Repairs
2
Table Of Contents
2
Disassembly For Repair
3
Cautions For Reassembling The Main Knob Assy
3
Forming The Two Coaxial Cables
3
Circuit Description
4
Main Receiver Block
4
Frequency Configuration
4
Reference Signal Generator
4
Mlo1/Mlo2
5
Reference Signal Generator Of The Main Receiver Block, Mlo1/Mlo2
5
Transmission And Sub Receiver Blocks
6
Mlo1/Mlo2 Frequency Shift Data
6
Tlo1/Slo1/Slo2/Slo3
7
Frequency Confi Guration Of The Transmission And Sub Receiver Blocks
7
Reference Signal Generator Of The Transmitter And Receiver Block
8
Slo1/Slo3 Frequency Shift Data
9
Main Receiver Circuit
10
From The Antenna Terminal To The Preselector Amplifier
10
Front Part Of The Main Receiver Circuit
10
Mode, Conversion Method, And If Frequency
10
From The Preselector Amplifier To The 1St If Frequency
11
From The 2Nd If To The Mrif Output
12
Preselector Circuit
12
Selecting an if Fi Lter
12
Preselector Operation Frequency
12
Preamplifier Circuit
13
Configuration Of The Preamplifier
13
Preamplifier 1 Circuit
13
1St Mixer
14
Noise Blanker Filter And If Filter Adjustments
14
Preamplifier 2 Circuit
14
Preamplifier Key Display
14
If Filter
15
Noise Blanker Filter and if Filter Adjustments
15
IF Filter Specifications
15
RX if Filter Settings
16
Noise Blanker Circuit
17
Noise Detector
17
Noise Blanking Circuit
17
Noise Detection Circuit
17
Sub Receiver Circuit
18
From The Antenna Terminal To The Sub Preamplifier
18
From The Sub Preamplifier To The 2Nd If
19
Frequency
19
Bpf Range
19
2Nd If Frequency
20
Criteria For Selecting The Srx-1 Path Or Srx-2 Path
20
Selecting the if Filter
20
From The 2Nd If To The Srif Output
21
1St Mixer Of The Srx-1 Path
21
Mcf Adjustment
22
1St Mixer Of The Srx-2 Path
22
The Mcf Circuit Of The Srx-1/2 Path
22
Noise Detector Circuit
24
Transmission Circuit
25
From The Transmission Signal To The Drive Output
25
Blanking Circuit
25
From The Drive Output To The Antenna Terminal
26
Antenna Tuner And Various Protections
26
Antenna Distribution Diagram
27
Scope Circuit
28
Transmit Power Control
28
From The If Input Stage To The If Amplifier
28
From The 2Nd Mixer To The 3Rd Mixer
28
From The If Amplifier To The 3Rd Mixer Output
29
From The 3Rd Mixer To The Scif
29
Scref
29
Pll To Sclo1/Sclo2
29
Dc/Dc Converter Circuit
30
Interface Circuit
30
13.8 V Power Supply And 5 V Backup Power Supply
30
Dsp Unit
31
14S, 5 V, And 33S Power Supplies
31
1.8V And 1.2V Power Supplies
31
Outline
31
Dsps And The Peripheral Circuit
32
Reception Signal Path
32
Flow Of Audio Clock
32
Transmission Signal Path
33
Receive Signal Path
33
Signal Path To External I/O
34
Signal Paths Of Recording Sound And Playback Sound
34
External I/O And Signal Paths Of Recording And Playback Sounds
34
Control Circuit
35
Signal Path For The Band Scope And Decoder Use
35
Agc Voltage Output Circuit
35
Main/Scope Mcu And Its Periphery
35
Scope Dsp And Its Periphery
36
Scope If Signal
36
Mscpi Signal
36
Sscpi Signal
36
Digital Control Circuit
37
Application Mcu And Its Periphery
37
Communication With The Main/Panel Mcu
37
Lan Interface Circuit
37
Display Circuit
38
Usb Interface (Host)
38
Dvi Output
38
Recording/Playback
38
Components Description
40
Accessory Unit
40
Dc-Dc Unit
41
Final Unit
42
Digital Unit
43
Pll Unit
44
At Unit
48
Control Unit
50
Display Unit
51
Rx Unit
52
Tx-Rx Unit
55
Semiconductor Data
60
Main Mcu
60
Scope-Sub Mcu
61
Scope Dsp
62
Extension Port Ic
64
Dsp-Sub Mcu
67
Txmrx-Dsp
68
Srx-Dsp
70
Panel Mcu
73
Parts List
75
Exploded View (Main Body Upper Side)
150
Main Body Lower Side
151
Panel
152
Wiring - Upper Side
154
Wiring - Lower Side
155
Wiring - Panel
156
Packing
157
Trouble Shooting
158
Fault Diagnosis Of The Bga (Ball Grid Array) Ic
158
Replacing Digital Unit
159
Adjustment
160
Updating Firmware
160
Required Test Equipment
160
Preparation
160
Service Jig
161
Acc 2 Connector Short Plug
161
Adjustment Rod
161
Jig Cable
161
Adjustment Mode
162
Operating Procedure For Adjustment Mode
162
Adjustment Mode Menu
163
Display Check
165
Pll Section
165
Receiver Section
168
Transmitter Section
195
Adjustment Points (Upper Side)
206
Lower Side
207
Terminal Function
210
Accessory Units
210
Level Diagram
238
Main/Sub Band
238
Optional Accessories
240
External Speaker
240
Arcp-990 (Radio Control Program)
240
Arhp-990 (Radio Host Program)
240
Schematic Diagram
241
Specifications
242
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Table of Contents
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Sp-990
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