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SECTION 3 DISASSEMBLY AND OPTIONS INSTRUCTIONS
CAUTION:
DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver.
Otherwise, there is danger of electric shock and/or equipment damage.
• Opening the transceiver case
1
Unscrew 6 screws
A
, and remove the front unit.
2
Unscrew 6 screws
B
, and remove the rear panel.
• Removing the MAIN unit
1
Remove the shield cover
E
.
E
A
B
A
A
A
B
A
B
B
B
• Removing the LOGIC board
1
Unsolder 2 points
C
.
2
Disconnect microphone connector from J4 and
SQL/DIAL connector from J7.
3
Unscrew 7 screws
D
, and remove the LOGIC board.
D
D
D
J7
J4
D
D
C
D
D
J3
2
Disconnect flat cables from J1 and J2.
3
Unsolder 17 points
F
.
4
Unscrew 7 screws
G
, and remove the MAIN unit.
G
G
J2
G
G
F
G
F
G
F
J1
G
Unsolder point
3 - 1
• Removing the AF unit
1
Disconnect 4 connectors from J5, J8, J9 and J10.
2
Disconnect 2 flat cables from J2 and J4
3
Unscrew 2 screws
H
, and remove 2 clips
I
,
J
.
4
Unscrew 3 screws
K
, and remove the AF unit.
K
J
J9
J10
J5
J8
K
I
K
H
J2
J4
• UT-112 VOICE SCRAMBLER UNIT INSTALLATION
1
Plug UT-112 into J3 on the AF unit.
UT-112
J3
3 - 2
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Table of contents
- 1 FRONT COVER
- 2 INTRODUCTION
- 3 TABLE OF CONTENTS
- 4 SPECIFICATIONS
- 5 Channel list
- 6 INSIDE VIEWS
- 6 IC-M602
- 7 HM-127
- 8 DISASSEMBLY INSTRUCTION
- 10 CIRCUIT DESCRIPTION
- 10 Receiver circuits
- 12 Transmitter circuits
- 13 PLL circuits
- 14 DSC circuits
- 14 LOGIC circuits
- 15 Power supply circuits
- 15 Port allocations
- 17 ADJUSTMENT PROCEDURES
- 17 Preparation
- 18 PLL adjustments
- 19 Receiver adjustments
- 21 PARTS LIST
- 21 SQL board
- 21 VR board
- 21 Connect unit
- 21 Dial board
- 21 Front unit
- 21 Logic board
- 23 AF unit
- 25 Main unit
- 29 HM-136
- 30 HM-127
- 31 MECHANICAL PARTS AND DISASSEMBLY
- 34 SEMI-CONDUCTOR INFORMATION
- 35 BOARD LAYOUTS
- 35 VR board
- 35 SQL board
- 35 DIAL board
- 35 CONNECT unit
- 36 LOGIC board
- 38 MAIN unit
- 40 AF unit
- 42 HM-136
- 42 HM-127
- 44 BLOCK DIAGRAM
- 45 WIRING DIAGRAM
- 46 VOLTAGE DIAGRAM
- 46 LOGIC BOARD
- 47 MAIN UNIT (1)
- 48 MAIN UNIT (2)
- 49 AF UNIT
- 50 HM-136
- 51 HM-127
- 52 ADDRESS
- 53 BACK COVER