Pantech PG-1400, Руководство по обслуживанию

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PG-1400 Service Manual
CONTENTS
SECTION 1 INTRODUCTION .............................................................................................................3
1.1 A
N
I
NTRODUCTION OF
GSM D
IGITAL
C
ELLULAR
M
OBILE
C
OMMUNICATION
S
YSTEM
...........................3
1.2 F
REQUENCY
A
LLOCATION AND
I
TS
U
SE
...........................................................................................3
1.3 I
TEM
N
AME AND
U
SE
......................................................................................................................4
1.4 C
HARACTERISTICS
.........................................................................................................................4
SECTION 2 ELECTRICAL SPECIFICATIONS....................................................................................5
2.1 G
ENERAL
......................................................................................................................................5
2.2 T
RANSMITTER
…………………………………………………………………………………………….5
2.3 R
ECEIVER
…………………………………………………………………………………………………5
SECTION 3 OPERATION....................................................................................................................6
3.1 N
AME OF EACH
P
ART
…..……………………………….…………………………………………………6
3.2.D
ISPLAY
..………………….…………………………….………………………………………………..7
3.3 KEYPAD …………………………………….………….………………………………………………..7
3.4 CAMERA MODULE……………………………….…….………….……………………………….…..7
SECTION 4 THEORY OF OPERATION..............................................................................................8
4.1 LOGIC SECTION........................................................................................................................8
4.1.1
D
C DISTRIBUTION AND
R
EGULATION
P
ART
…………………………………………………………….8
4.1.2 L
OGIC
P
ART
…………………………………………………………………………………………….8
4.1.2.1 S
UMMARY
…………………………………………………………………………………………….8
4.1.2.2 B
ASEBAND
D
IGITAL
S
IGNAL
P
ROCESSING
…………………………………………………………..8
4.1.3 M
EMORY
P
ART
………………………………………………………………………………………..10
4.1.4 N
OTIFICATION
P
ART
.................................................................................................................. 11
4.1.5 K
EY
P
AD
P
ART
.......................................................................................................................... 11
4.1.6 LCD M
ODULE
(D
ISPLAY
P
ART
)................................................................................................... 11
4.1.7 CAMERA MODULE
4.2 R
ADIO
T
RANSCEIVER
S
ECTION
.....................................................................................................12
4.2.1 DC D
ISTRIBUTION AND
R
EGULATION
P
ART
.................................................................................13
4.2.3 R
ECEIVER
S
ECTION
………………………………………………………………….…………….…13
4.2.3.1 A
N
O
VERVIEW OF
R
ECEIVE SECTION
.......................................................................................13
4.2.3.2 R
ECEIVER
P
ART
……………………………………………………………………………….……14
4.2.4 T
RANSMIT
S
ECTION
..................................................................................................................15
4.2.4.1 A
N
O
VERVIEW OF
T
RANSMIT
S
ECTION
....................................................................................15
4.2.4.2 T
RANSMITTER
P
ART
...............................................................................................................16
4.2.5. V
CTCXO
(
VOLTAGE CONTROLLED TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR
):…….……16
SECTION 5 ALIGNMENT PROCEDURE..........................................................................................17
5.1 R
ECOMMENDED
T
EST
E
QUIPMENT
................................................................................................17
5.2 C
ONNECTION OF
T
EST
E
QUIPMENT
...............................................................................................17
SECTION 6 EQUIPMENT REPAIR PROCEDURE ...........................................................................18
6.1
NO POWER ON WITH BATTERY APPLIED
..........................................................................................18
6.1.1 P
OWER
C
HECK
.........................................................................................................................18
6.1.2 O
SCILLATION
C
HECK
................................................................................................................24
6.1.3 K
EYPAD
L
ED
N
OT
I
N
O
PERATION
...............................................................................................25
6.1.4 L
CD
B
ACKLIGHT
L
ED
N
OT
I
N
O
PERATION
(W
HITE
)..…………………………………………….. …26
6.2 AUDIO PART(E
ARPIECE
, H
ANDS FREE
E
ARPHONE
, M
ICROPHONE
, H
ANDS FREE
M
IC
) ..................27
6.2.1 N
O
R
ECEIVING
T
ONE
H
EARD
(E
ARPIECE
) ..................................................................................27
6.2.2 N
O
R
ECEIVING
T
ONE
H
EARD
(H
ANDS FREE
E
ARPHONE
).............................................................28
6.2.3 S
IDETONE
N
OT
T
RANSMITTED
(E
ARPIECE
)................................................................................29
6.2.4 S
IDETONE
N
OT
T
RANSMITTED
(H
ANDS FREE
M
IC
) .....................................................................30
6.2.5 H
OOK
S
WITCH
N
OT
W
ORKING
..................................................................................................31
6.2.6 M
ELODY
N
OT
R
INGING
.............................................................................................................32
6.2.7 VIBRATOR NOT WORKING …………………………………………………………………...…33
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PANTECH