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Kenwood Manuals
Transceiver
TM-255E
Service manual
Table Of Contents - Kenwood TM-255E Service Manual
144mhz all mode transceiver
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Also See for TM-255E
:
Product manual
(100 pages)
,
Instruction manual
(66 pages)
,
Instruction manual
(66 pages)
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Table Of Contents
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Contents
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Table of Contents
Front Panel Facilities
1
Contents
1
Destination List
1
Frequency Configuration
2
Pll Circuit
3
Frequency Processing Pll
3
Reference Frequency Uses
3
Lo1 (Pll Loop)/Car
3
Transceiver Frequency Configuration
4
Frequency Processing Block Diagram
5
Receiver Circuit Configuration
6
Receiver Frontend
7
Agc Circuit
7
Noise Blanker Circuit
8
S-Meter Circuit
9
Detection Circuit
9
Squelch Circuit
9
Transmitter Circuit Configuration
11
Alc Circuit
12
Power Control Circuit
12
Thermal Protection
13
Auto Microphone Gain Control Function - Ssb Mode
14
Data Terminal, Peripheral Circuits And Use
15
Transmit Signals
15
Receive Signals
15
Squelch Signal/Relay Output
15
Digital Control Circuit
17
Lcd Assembly And Control Unit Data Communication Circuit
18
Panel (Lcd Assembly) Microprocessor Reset Circuit
19
Panel Key Input/Vr Input
19
Display Circuit
19
Dimmer Circuit
19
Reset Circuit
20
Backup Circuit
20
Eeprom
21
Pll And Dds Control Circuit
21
Tx-Rx Unit Control Signal Circuit
21
Main Unit Key A/D Input
23
Encoder Circuit
23
Busy Signal/Beep
24
Subtone
24
Ctcss Input/Output - When Optional Tsu-8 Is Connected
24
Dtmf Input/Output
24
Menu Mode
25
Pf Key Functions
26
Semiconductor Data
27
Cpu: M37702M6B***Fp (Control Unit Ic1) Block Diagram
27
Functions Of Pins
28
Dtmf Encoder Tc35219F Pin Connection/Block Diagram/Functions Of Pins
30
Dtmf Decoder Lc7385M Pin Connection/Block Diagram/Functions Of Pins
31
Electronic Volume Control
32
X57-4530-00, -11 Tx-Rx Unit (A/5 If)
34
X57-4530-00, -11 Tx-Rx Unit (A/5 Rf)
37
X57-4530-00, -11 Tx-Rx Unit (C/5 Final)
38
X57-4110-00 Vco
38
X57-4020-00 Fan
38
X53-3510-12, -21, 2-72 Control Unit
39
Parts List
40
Exploded View
64
Exploded View (Control)
65
Packing
66
Adjustment
67
Outline Of Adjustment Mode
67
Service Adjustment Mode Menu
67
Panel Operation In Adjustment Mode
68
A0 Checksum Display
69
A1 Rit Vr Mechanical Center Correction
69
A2 If-Shift Vr Mechanical Center Correction
70
A3 Lsb Carrier Point Adjustment
70
A4 Usb Carrier Point Adjustment
71
A5 S Meter Curve Adjustment (S1) (Any Mode Except Fm)
71
A6 S Meter Curve Adjustment (S9) (Any Mode Except Fm)
72
A7 S Meter Curve Adjustment (Fullscale) (Any Mode Except Fm)
72
A8 S Meter Curve Adjustment (S1) (Fm)
73
A9 S Meter Curve Adjustment (Full Scale) (Fm)
73
Aa Rf Meter Curve Adjustment (Low)
74
Ab Rf Meter Curve Adjustment (Middle)
74
Ac Rf Meter Curve Adjustment (High)
75
Ad Dtmf Single Tone Output
75
Ae Alc Start Read
76
Af Alc Zone Max. Read
76
B0 Alc Full Scale Read
77
B1 Fm Microphone Gain
77
B2 Ssb Microphone Gain
78
B3 Write Into Eeprom
78
Test Equipment For Adjustment
79
Adjustment Service Jig
80
Service Jigs Usage
80
Tx/Rx Common Adjustment
81
Pll/Car Adjustment
81
Rx Adjustment
81
Tx Adjustment
84
Tx-Rx Unit (C/5) Diagram
87
Tx-Rx Unit (B/5) Diagram
87
Tx-Rx Unit (A/5) Diagram
87
Pc Boards Views
88
Schematic Diagram
100
Wiring Diagram
106
Level Diagram
107
Dfk-7A External View
108
Specification
108
Dfk-7A Connection
108
Pg-5A External View
108
Specifications
109
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