Table of Contents
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GB310 Service Manual
SECTION 1 INTRODUCTION .............................................................................................................3
1.1 I
..............................................................................................................................3
NTRODUCTION
........................................................................................................................4
SECTION 2 ELECTRICAL SPECIFICATIONS....................................................................................5
......................................................................................................................................5
..........................................................................................................5
...............................................................................................................5
SECTION 3 OPERATION....................................................................................................................6
..................................................................................................................7
3.3 KEYPAD ................................................................................................................7
SECTION 4 THEORY OF OPERATION..............................................................................................8
4.1 LOGIC SECTION ........................................................................................................................8
..........................................................................................................8
4.1.2.1 S
..........................................................................................................8
UMMARY
.....................................................................................................10
......................................................................................................................... 11
4.2.2 TRANSCEIVER PIN DESCRIPTION.......................................................................14
.................................................................................................17
.................................................................................................18
.........................................................................................................21
(
SECTION 5 ALIGNMENT PROCEDURE..........................................................................................23
SECTION 6 EQUIPMENT REPAIR PROCEDURE ...........................................................................24
6.1
.........................................................................................................................24
E
B
L
ACKLIGHT
6.2.2 N
R
T
O
ECEIVING
ONE
6.2.4 S
N
T
IDETONE
OT
RANSMITTED
CONTENTS
...........................................................................................3
.....................................................................................................................4
...................................................................................................6
......................................................................8
....................................................................8
.................................................................................................................. 11
) .................................................................................................. 11
.....................................................................................................12
.................................................................................13
......................................................................................17
..................................................................................................................19
....................................................................................19
...............................................................................................................20
OFFSET PLL............................................................................................21
...............................................................................................23
..............................................................................................23
..........................................................................................24
...............................................................................................................30
L
N
I
O
(W
ED
OT
N
PERATION
) .................................................................................35
H
(H
E
EARD
ANDS FREE
ARPHONE
)................................................................................38
(H
M
ANDS FREE
.................................................................................................39
............................................................................................................40
PANTECH
)..............................................................31
).................................................. ...33
HITE
).............................................................35
) .....................................................................38
IC
1
):V801....22
)..................35
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