Text preview for : Signal flow.pdf part of Motorola V3688 Motorola V3688 Cellular phone Service Manual
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PAC_275
NPA_MUTE
PA_B+
M
LS_V1
-5V
-5V_EN
RF_V2
RF_V1
B+
Vref
V3
O
V2
EXT_B+
N
27 25 23 1 3 2 5 1 6
2 SH900
4
4
6
C MI
I
26
FLIP_CON
2
A
RX / TX ANTENNA SIGNAL GSM RX ANTENNA SIGNAL DCS RX ANTENNA SIGNAL AMPLIFIED RX ANTENNA SIGNAL FILTERED PA OUTPUT SIGNAL TX VCO TUNING VOLTAGE TX / RX VCO FEEDBACK LINE TO MAGIC RX VCO TUNING VOLTAGE PA DETECT LINE PA TUNING VOLTAGE PA TUNING VOLTAGE MAGIC 13MHz RX SPEAKER LINE+ RX SPEAKER LINETX MIC LINE+
26MHz
1 2 14
B J600 J600 15 F 14 13 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
LO2_CP
27_PIN_FLIP_CONN. BKLT+ GND V2 V2 V2 GND D7 NC D6 D5 D4 V2 D3 D2 D1 V2 D0 R_W A0 NC DP_EN RESET SPKR+ GND SPKRGND RTC_BATT
C D E F G H I J K L M N O
15 PIN EXT.CONN.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
GND SW_RF GND BATT_FDBK MAN_TEST_AD RS232_TX RS232_RX EXT_CHG_EN ON / OFF GND UPLINK DOWNLINK DSC_EN EXT_B+ GND
4
PAC
8
BATT+
7 1 2 3 6 5 4
SIM_CONN AUX_BATT_CON
GND
1
11 9 8 7 6 5 4 3 2 1
1 2 3 4
XTAL_BASE XTAL_EMIT
GND VSIM1 RST PD I/O CLK
1 2 3 1 2 3 4 1
6 5 4 8 7 6 5 8
K THERM J
2
E1
E2
CP_TX B1 CP_RX A1 PRSC_INA3
H G
5 6
L
3 J6
BATT_SER_DATA
MAGIC CLK_OUT
LO2_BASE PLL_BASE
PRE_IN A7
D
J7 PLL_CP H9
E9
A9
BATT+ C
4 5 6 7
4
1
3
5
EXT_CONN
10
20 21 22 23
E
5 4
B
10 1
24 25 26 27
A
B+
SF_OUT
TVCO_250
DCS_LNA275
GSM_LNA275
V1
RF_V2
TX_EN
V_BOOST1
MIX_275
A
PA_B+
D_TX_VCO
SF_OUT
PAC_275
G_TX_VCO
V_SIM1 13MHz_CLK
E1
TP U913
MAGIC 101 102 103 MAGIC_13MHz 104 105 701 702 703 D7 GCAP_CLK F5 704 705 706 707 R_W CE_0 Eprom CE_1 Eprom CE_3 SRam CE_2 SRam Earth TMS TD0 TRST* EMU_1 TD1 EMU_0
Dual Band KRAMER H13
K
J
Y201 SH200
E2
SH300
9 10 11 4 12 13 14 15 5 16 9 10 11 12 13 14 15 16 7 8 7
SH700
L J800 14 PIN_KEYBOARD_CONN 1
G14
J6 G14
GND BKLT+ GND BKLT+ HS_INT KBC3 KBC2 KBC1 KBC0 KBR2 KBR1 KBR0 PWR_SW GND
2 3 4 5 6
U700
WHITE_CAP
E 900/ 1800MHz
PA_GSM
2 1 8
EPROM EEPROM
G
14
I
3
1
WHITECAP
13
7 8 9 10 11 12 13 14
U900
GCAP_II
C
B
PA_DCS
2 1
TX_VCO_IC
1805 - 1880 MHz
942,5MHz D
F
ALERT
KEYBOARD CONN
D7
H
1
SRAM
2
ALRT_VCC
ALRTOUT
942,5MHz 1842,5MHz
J9
K9 F5
4 2 1
HEADSET_CON
32,768kHz
400MHz
SPKR+H7
GCAP_II
AUX_MIC-
SPKR- H6
M
5 8
N
MICIN-
H3
J2
EUROPE MIDDLE EAST & AFRICA CUSTOMER SERVICES
04.02.99
O
LEVEL 3 COLOUR SIGNAL FLOW Dual Band Kramer DCS_VCO VREF B+
Rev. 1.0
PAC_275
V2
HEAD_INT
DCS_LNA275
GSM_LNA275
SW_VCC
RVCO_250
SF_OUT
LS_V1
Ray Collins, Ralf Lorenzen, Michael Hansen, Colin Jack Page1