VK Quality Group GSM C/S
☞
☞
RF Block
RF Block
R614
430R
C634 1p2
+
C637
100u/6.3V(3427CC)
2
C6
2
3
12
0p
2
/QTX
J601
MHC-H196
5
4
3
6
2
1
G3
G2
G1
G4
OUT
IN
TXPOWER
H
/IRX
Front End Control Logic
C6
0
1
1
0
n
SY NDAT
R622
4K7
5
C616
0R
2
L606
n.m
C633 1p2
C6
0
3
2u
2/
6.
3
V
(160
8)
L602
6n8H
R628
4K7
VCC
L603
27nH
VC1
VC2
R632
0R
C6
1
4
n
.m
QRX
R625
n.m
C638
2p7
C6
0
2
1
0
n
V_CORE
R627
4K7
CLK13M
ITX
QTX
X601
DSX321G(26MHz)
1
3
2
4
R630
100K
5
/ITX
2
L608
3n9H
R621
4K7
V_BAT
U604
ESHS-M085FA
1
18
2
3
8
11
14
16
12
13
17
9
10
15
4
5
6
7
19
20
GSM850 RX_2
GSM850 RX_1
GSM900 RX_1
GSM900 RX_2
GN
D
DCS
/P
CS
_
T
X
GSM
_
T
X
ANT
VC
1
VC
2
GN
D
GN
D
GN
D
GN
D
DCS RX_1
DCS RX_2
PCS RX_1
PCS RX_2
GN
D
GN
D
C630
15p
C631 1p2
C607
33p
IRX
R613
12R
2,8
2
R618
0R
C
6
35
1
00P
5
/QRX
2
VC1
2
L
C6
0
4
1
0u/
6.
3V(
1
6
0
8
)
R607
430R
SY NENB
C620
100n
RF_2V8
RF_2V8
BS
2
L
QTX
U602
TQM7M4006
8
27
1
6
5
4
3
25
20
17
24
23
2
22
21
19
16
7
15
14
13
12
11
9
10
18
26
28
GSM_IN
GN
D
DCS/PCS_IN
VR
AM
P
VBAT
T
PA_E
N
B
a
n
d
se
le
ct
GN
D
DCS/PCS_OUT
GSM_OUT
GN
D
GN
D
Vc
o
n
-D
C
S
GN
D
GN
D
GN
D
GN
D
Vc
o
n
-G
SM
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
Vc
c
2
G
Vc
c
3
Vc
c
2
D
GN
D
ANT602
EXF-0023-02
1
R616
0R
2
V_BAT
L605
n.m
R624
0R
GSM850/900 TX
R606
1K
U603
SI4210
17
18
19
20
21
22
23
24
31
30
2
1
3
4
5
6
7
32
29
28
27
26
25
9
10
11
12
13
14
15
16
8
33
RFIPP
RFIPN
RFIDP
RFIDN
RFIEP
RFIEN
RFIAP
RFIAN
XT
AL_
1
XT
AL_
2
/SEN
SCLK
SDIO
BQN
BQP
BIN
BIP
XE
N
VD
D
4
VD
D
3
AF
C
XD
IV
XM
O
D
E
/P
D
N
/R
ESET
VI
O
VD
D
1
VD
D
2
GN
D
RFO
L
RFO
H
XOUT
GN
D
C605
100p
Q601
EMB9
1
2
3
4
5
6
T
R
1_E
TR1_B
T
R
2_
C
T
R
2_E
TR2_B
TR1
_
C
R
641
0
R
L607
3n9H
C613
10p
2
C617
100n
R610
430R
IRX
VC2
VCC
C628 1p2
TX_EN
L604
30nH
C626 1p2
U601
MIC5255-2.85BM5
1
3
5
4
2
IN
/SHDN
OUT
BP
GN
D
EN_ALIM
C6
2
4
120
p
VCC
2
L
DCS/PCS TX
/ITX
R603
12R
C
610
n.
m
2
H
H
RF_2V8
L601
6n8H
R609
n.m
C632 1p2
C611
100p
SY NCLK
2
2
PAM Band Select Logic
AFC
RF_RESET
C
609
n.
m
C636
100p
C606
680p
V_CORE
QRX
C627 1p
L
2
2
V_BAT
GSM850/900 TX
ITX
C608
2u2/6.3V(1608)
R601
430R
2
RF_2V8
2
L
VC1
C
6
21
1
00P
/IRX
R640
10K
2
V_CORE
2
V_BAT
ANT601
EXF-0023-02
1
C
615
n.
m
PDNB
RX(All band)
C629 1p
DCS/PCS TX
/QTX
Содержание VK4500
Страница 1: ...VK Quality Group GSM C S GSM GSM SERVICE MANUAL SERVICE MANUAL VK4500 VK4500 ...
Страница 11: ...VK Quality Group GSM C S Appearance Appearance ...
Страница 12: ...VK Quality Group GSM C S Icons Icons ...
Страница 13: ...VK Quality Group GSM C S Icons Icons ...
Страница 14: ...VK Quality Group GSM C S Icons Icons ...
Страница 15: ...VK Quality Group GSM C S LCD Panel LCD Panel ...
Страница 20: ...VK Quality Group GSM C S Ass Ass y y View View Folder Upper Ass y Folder Upper Folder Upper Ass Ass y y ...
Страница 21: ...VK Quality Group GSM C S Ass Ass y y View View Folder Lower Ass y Folder Lower Folder Lower Ass Ass y y ...
Страница 22: ...VK Quality Group GSM C S Ass Ass y y View View Front Case Ass y Front Case Front Case Ass Ass y y ...
Страница 23: ...VK Quality Group GSM C S Ass Ass y y View View Rear Case Ass y Rear Case Rear Case Ass Ass y y ...
Страница 26: ...VK Quality Group GSM C S Battery Rear Case Battery Rear Case Disassembling Disassembling ...
Страница 29: ...VK Quality Group GSM C S Main PCB Main PCB 1 Unscrew like a picture 2 Take off Speaker 3 Take off Intenna ...
Страница 30: ...VK Quality Group GSM C S Main PCB Main PCB Disassembling Disassembling ...
Страница 32: ...VK Quality Group GSM C S Lower Case Lower Case Ass Ass y y Disassembling Disassembling ...
Страница 34: ...VK Quality Group GSM C S Exploded View Exploded View 1 Unscrew like a picture 2 Take off Slide Bottom case ...
Страница 36: ...VK Quality Group GSM C S LCD LCD Ass Ass y y Disassembling Disassembling ...
Страница 37: ...VK Quality Group GSM C S Exploded View Exploded View 1 Take off LCD Module from Front upper case ...
Страница 43: ...VK Quality Group GSM C S MODULE AND APPLICATION Block Diagram MODULE AND APPLICATION Block Diagram ...
Страница 54: ...VK Quality Group GSM C S Battery Charger Block Battery Charger Block ...
Страница 56: ...VK Quality Group GSM C S Main PCB Main PCB Top Top Bottom Bottom ...
Страница 57: ...VK Quality Group GSM C S Module Area Module Area ...
Страница 58: ...VK Quality Group GSM C S RF Area RF Area ...
Страница 59: ...VK Quality Group GSM C S BASEBAND Area BASEBAND Area ...
Страница 74: ...VK Quality Group GSM C S TX Power Trouble E TX Power Trouble E GSM GSM ...
Страница 75: ...VK Quality Group GSM C S RX Sensitivity Trouble E RX Sensitivity Trouble E GSM GSM ...
Страница 76: ...VK Quality Group GSM C S RX Sensitivity Trouble E RX Sensitivity Trouble E GSM GSM ...