Service Manual
9LWHOFRP0REL O H7HFKQRORJ\6$ 3URSULHWDU\DQG&RQILGHQWLDO - 3 -
V
V
I
I
T
T
E
E
L
L
C
C
O
O
M
M
M
M
O
O
B
B
I
I
L
L
E
E
T
T
E
E
C
C
H
H
N
N
O
O
L
L
O
O
G
G
Y
Y
S
S
.
.
A
A
.
.
TABLE OF CONTENTS
1. INTRODUCTION.......................................................................................................................................................4
2. SPECIFICATION.......................................................................................................................................................4
2.1 PRODUCT STRUCTURE............................................................................................................................. 4
2.2 TSM501 / VTL501 SPECIFICATIONS......................................................................................................... 4
2.3 BATTERY SPECIFICATIONS ........................................................................................................................ 5
2.4 AC CHARGER SPECIFICATIONS................................................................................................................. 5
3. MENU TREE..............................................................................................................................................................6
4. TECHNICAL DESCRIPTION ................................................................................................................................10
4.1 OVERVIEW............................................................................................................................................. 10
4.2 RF PART DESCRIPTION........................................................................................................................... 12
4.2.1 Description of Frequency Synthesizer Circuit ..............................................................................12
4.2.2 Description of Rx Part Circuit.............................................................................................................13
4.2.3 Description of Tx Part Circuit.............................................................................................................15
4.3 LOGIC PART DESCRIPTION...................................................................................................................... 16
4.3.1 Keypad/ LCD...........................................................................................................................................16
4.3.2 Voice Processing Part..........................................................................................................................16
4.3.3 Mobile Station Modem( MSM, U125)..............................................................................................16
4.3.4 Memory Part (U113).............................................................................................................................18
4.3.5 Power Supply Part ................................................................................................................................18
4.4 POWER UP SEQUENCE........................................................................................................................... 19
5. SERVICING TOOLS...............................................................................................................................................21
5.1 SERVICING TOOLS ............................................................................................................................ 21
5.2 DOWNLOADER ....................................................................................................................................... 24
5.3 HOW TO USE LAUTERBACH............................................................................................................. 31
5.4 CAL.EXE (WRITING CAL DATA)............................................................................................................... 35
6. MEASUREMENT....................................................................................................................................................37
6.1 MEASUREMENT CONFIGURATION ............................................................................................................ 37