Kenwood TKR-820 Manuals

Manuals and User Guides for Kenwood TKR-820. We have 3 Kenwood TKR-820 manuals available for free PDF download: Service Manual

Kenwood TKR-820 Service Manual (91 pages)

uhf desk-top repeater

Brand: Kenwood | Category: Repeater | Size: 27.5 MB

Revised
1
Contents
1
Scope of the Manual
2
Ordering Replacement Parts
2
Personnel Safety
2
FCC Compliance and Type Numbers
2
Pre-Installation Considerations
3
Service
3
During Operation of Repeater
3
Planning the Installation
3
System Set-Up
4
Installation
5
Installing the EEPROM of Signaling Unit
5
Installing the Duplexer
6
Attaching the Rack-Mount Brackets (for EIA Racks)
8
Conversion
9
Modification of the DC Switching Circuit
9
Disassembly for Repair
11
How to Remove the Case
11
Disassembling the Transmitter/Receiver Section
11
How to Remove the Transmitter/Receiver Section
11
How to Remove the TX-RX Unit
12
How to Remove the Panel
13
Disassembling the Final Ass'y Unit
13
Disassembling the Sub-Panel
14
Disassembling the AVR Unit
15
Disassembling the AVR Unit (X43-3040-10)
15
How to Remove the AVR Unit (X43-3040-10) and the Electrolytic Capacitor
16
How to Remove the Power Transformer
16
TKR-820 Block Diagram
17
Circuit Description
18
Trensmitter Circuit
18
Receiver Circuit
18
Transmitter Block Diagram
18
Squelch Circuit
19
RX Frequency Synthesizer
20
TX Frequency Synthesizer
20
Microphone Amplifier
20
Reset Circuit
21
PLL and Modulation Circuit Block Diagram
21
Reset Circuit Block Diagram
21
EEPROM Programming
22
Signaling Unit
22
Takeover Switch
22
Decoder Operation
22
Accessory Connector
23
AVR Circuit
23
AVR Circuit Block Diagram
23
Semiconductor Data
24
JLC1075DW: PL System (TXPLL, RX PLL IC2)
24
M51943BML: Reset System (Signaling Unit IC2), Precision Reference (Display Unit IC2)
24
M5222FP: Electronic Attenuator (BPF/VCA IC3)
25
M57729UH-P, M57729SH-22, M57729L-22, M57729H-01-P: TX Power Amplifier (Final Unit IC1)
25
MB504F: Prescaler (TX PLL, RX PLL IC1)
25
MB3756: Voltage Regulator (TX-RX Unit IC2)
26
MC3361D: if System (if IC1)
26
93C46PI: EEPROM (Signaling Unit IC10, Display Unit IC2)
27
PC1242H: AF Power Amplifier (TX-RX Unit IC1)
27
PD75104G-604-1B: Microprocessor (Display Unit IC1)
28
Description of Components
29
Parts List
31
Disassembly
51
Packing
53
Adjustment
54
Test Equipment Required for Alignment
54
Signaling
54
Test Cable for Microphone Input
54
Adjustment Location
55
Adjustment Points
55
Bottom View
55
Front Panel View
55
Alignment
56
PC Board View/Circuit Diagram
60
Rx Pll: Z1, Tx Pll: Z4 (X58-3120-10)
60
Rx Vco: Z2 (X58-3150-XX) -10:K,M -11:K2,M2 -13: K3,M3 -14:K4,M4
61
Tx Vco: Z5 (X58-3460-XX) -10:K,M -11:K2,M2 -12: K3,M3 -13:K4,M4
62
MIC Amp: Z7 (X59-3210-10)
63
If: Z8 (X59-3220-10)
64
Bpf/Vca: Z9 (X59-3230-10)
65
AVR Unit (X43-3040-10)
66
Final Unit (X45-3250-10)
68
Final Unit (X45-3250-XX) -10:K,M -11:K2,M2 -12:K3,M3 -13:K4,M4
69
Signaling Unit (X52-3140-10)
70
Display Unit (X54-3070-11)
72
TX-RX Unit (X57-3270-10)
76
TX-RX Unit (X57-3270-XX)10:K,M -11:K2,M2 -12: K3,M3 -13:K4,M4
78
Signaling Circuit Diagram
79
Signaling Circuit Diagram (S/No. 104XXXXX)
80
Schematic Diagram
81
Schematic Diagram (S/No. 104XXXXX)
83
Terminal Functions
85
KMC-9 (Base Microphone)
87
Chassis Removal
87
Removal of Microphone Element and Microphone Amplification Unit
87
External View
87
Switch Unit Removal
88
Removing Microphone Plug
88
Circuit Diagram
89
Specifications
90

Kenwood TKR-820 Service Manual (96 pages)

UHF Repeater

Brand: Kenwood | Category: Repeater | Size: 36.15 MB

Kenwood TKR-820 Service Manual (90 pages)

UHF Desk-top repeater

Brand: Kenwood | Category: Repeater | Size: 18.01 MB

Kenwood Categories

Car Receiver Transceiver

CD Player Amplifier Receiver

More Kenwood Manuals

Kenwood TKR-820 Manuals

Kenwood TKR-820 Service Manual (91 pages)

Table of Contents

Kenwood TKR-820 Service Manual (96 pages)

Kenwood TKR-820 Service Manual (90 pages)

Related Products

Kenwood Categories