This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
ⓒ
Samsung Electronics Co.,Ltd. September. 2005
Printed in Korea.
Code No.: GH68-08261A
BASIC.
1. Specification
1-1. GSM General Specification
EGSM900DCS1800PCS1900W-CDMA
Freq.
Band[MHz]
Uplink/Downlink
ARFCN range
Tx/Rx spacing45MHz95MHz80MHz190MHz
Mod. Bit rate/
Bit Period
Time Slot
Period/Frame
Period
Modulation0.3GMSK0.3GMSK0.3GMSK
MS Power33dBm~5dBm30dBm~0dBm30dBm~0dBm24dBm ~ - 50dBm
Power Class
890~915
935~960
0~124 &
975~1023
270.833kbps
3.692us
576.9us
4.615ms
4
(max +33dBm)1(max +30dBm)1(max +30dBm)
1710~1785
1805~1880
512~885512~810
270.833kbps
3.692us
576.9us
4.615ms
1850~1910
1930~1990
270.833kbps
3.692us
576.9us
4.615ms
1920~1980
2110~2170
UL:9612~9888
DL:10562~10838
3.84Mcps
Frame length : 10ms
QPSK
HQPSK
3
(max +24dBm)
Sensitivity-102dBm-100dBm-100dBm-106.7dBm
TDMA Mux888
Cell Radius35Km2Km2Km2Km
1-1
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Specification
1-2. GSM TX power class
TX Power
control level
533±2dBm
631±2dBm
729±2dBm
827±2dBm
925±2dBm
1023±2 dBm
1121±2 dBm
GSM900
TX Power
control level
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
DCS1800
TX Power
control level
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
PCS1800
1219±2 dBm
1317±2 dBm
1415±2 dBm
1513±2 dBm
1611±3 dBm
179±3dBm
187±3 dBm
195±3 dBm
716±3dBm
814±3dBm
912±4dBm
1010±4 dBm
118±4dBm
126±4 dBm
134±4 dBm
142±5 dBm
716±3dBm
814±3dBm
912±4dBm
1010±4 dBm
118±4dBm
126±4 dBm
134±4 dBm
142±5 dBm
150±5 dBm
1-2
150±5 dBm
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2. Circuit Description
2-1. SGH-Z140 RF Circuit Description
- Antenna Switch Module (U103)
The antenna switch module allows multiple operating bands and modes to share the same antenna. A common
antenna connects to one of seven paths: 1) UMTS-2100 Rx/Tx, 2) EGSM-900 Rx, 3) EGSM-900 Tx, 4) DCS-1800
Rx, and 5) DCS-1800 Tx. 6) PCS-1900 Tx, 7) PCS-1900 Rx, UMTS operation requires simultaneous reception and
transmission.
- Filter
To convert Electromagnetic Field Wave to Acoustic Wave and then pass the specific frequency band.
· GSM Rx FILTER (F100)→For filtering the frequency band between 925 ~ 960 MHz.
· DCS Rx FILTER (F101)→For filtering the frequency band 1805 and 1880 MHz.
· PCS Rx FILTER (F102)→For filtering the frequency band 1930 and 1990 MHz.
· WCDMA Rx FILTER (F200)→For filtering the frequency band 2110 and 2170 MHz.
· WCDMA Tx FILTER (F201)→For filtering the frequency band 1920 and 1980 MHz.
- VCTCXO (OSC200)
To generate the 19.2MHz reference clock to drive the logic and RF.
-Duplexer(F203)
A duplexer splits a single operating band into receive and transmit paths.
- WCDMA PAM (U201)
This is a key component in the transmitter chain and must complement the RTR6200 IC precisely; jointly they
dominate the UMTS transmitter performance characteristics. Parameters such as gain, output power level, ACLR,
harmonics, Rx-band noise, and power supply current are critical.
- GSM/DCS PAM (U102)
The PAM is a key component in any transmitter chain and must complement the rest of the transmitter precisely.
For GSM, DCS, PCS operation, the closed-loop transmit power control functions add even more requirements relative
to the UMTS PA. In addition to gain control and switching requirements, the usual RF parameters such as gain,
output power level, several output spectrum requirements, and power supply current are critical.
- GSM/DCS Dual Tx VCO (OSC101)
The dual Tx VCO outputs, one for EGSM and one for DCS, drive a resistive network that splits the active signal
into two signals: 1) the input to the active PAM – this is the low loss path, and 2) the OPLL feedback signal.
- Dual VCO (OSC201)
The dual-band UHF VCO is a key component within its phase-locked loop; VCO performance directly impacts PLL
and transceiver performance. GSM/DCS Rx/Tx LO & UMTS Rx LO signal is generated from this dual VCO's output.
2-1
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Circuit Description
- RFL6200 (U200)
The RFL6200 includes an LNA circuit optimized for UMTS-2100 operation. The LNA is separated from all other
receive functions contained within the RFR6200 receiver IC to improve mixer LO to RF isolation – a critical
parameter in the Zero-IF architecture.
- RFR6200 (U203)
The RFR6200 provides the Zero-IF receiver signal path, from RF to analog baseband, for UMTS-2100 applications.
The RFR6200 accepts its UMTS input signal from the handset RF front-end design. The UMTS input is configured
differentially to optimize second-order inter-modulation and common mode rejection performance, and implements
MSM-controlled gain adjustments to extend the receiver dynamic range.
- RTR6250 (U101)
The RTR6250 supports multi-band, multi-mode phones with two receiver signal paths and three transmitter signal
paths:
1) Receiver paths
- EGSM-900
- DCS-1800
- PCS-1900
2) Transmitter paths
- EGSM-900 (using OPLL technique)
- DCS-1800 (using OPLL technique)
- PCS-1900
- UMTS-2100
Numerous secondary functions are integrated on-chip as well:
3) Phase-locked loop circuits
- PLL#1 and an on-chip VCO supports UMTS Tx
- PLL#2 and an external VCO supports EGSM Rx and Tx, DCS Rx and Tx, DCS Rx and Tx and UMTS Rx
4) Transceiver LO generation and distribution circuits
- EGSM-900 Rx and Tx
- DCS-1800 Rx and Tx
- PCS-1900 Rx and Tx
- UMTS-2100 Tx
2-2
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Circuit Description
2-2. Baseband Circuit description of SGH-Z140
2-2-1. PM6650
- Power Management
Ten low-dropout regulators designed specifically for GSM applications power the terminal and help ensure optimal
system performance and long battery life. It provides seven LDO support for 1.375V, 1.8V, 2.6V, 2.85V, 3.0V, 3.3V
while a self-resetting, electronically fused switch supplies power to external accessories. Ancillary support functions,
such as RTC module and RTC charger, Clock Buffer, aid in reducing both board area and system complexity.
SBI BUS serial interface provides access to control and configuration registers. This interface gives full control of
the MSM6250 and enables system designers to maximize both standby and talk times.
Supervisory functions. including a reset generator, an input voltage monitor, and a ADC Conertte support reliable
system design. These functions work together to ensure proper system behavior during start-up or in the event of a
fault condition(low microprocessor voltage, insufficient battery energy, or excessive die temperature).
- TCXO Controller and Buffers
The PM6650 IC includes circuits for controlling the TCXO warm-up and buffering its signal for distribution
throughout the handset. Performance specifications are presented below.
2-2-2. Connector
- LCD Connector
LCD is consisted of main LCD(color 260K TFT LCD) and small LCD(color 65K LCD). Main LCD has 1.8", 176x220
resolution and sub LCD has 1.07", 96x96 resolution. Sub LCD uses STR to improve reflection performance. Chip
select signals in MSM6250, MLCD_CS_N can enable main LCD and SLCD_CS_N can enable small LCD.
MLCD_BL_EN enables white LED of main LCD. MLCD_RESET signal initiates the reset
process of the main LCD. SLCD_RESET signal initiates the Reset process of the small LCD.
-Key
This is consisted of key interface pins among U301, KEY_N(0:4). These signals compose the matrix. Result of
matrix informs the key status to key interface in the U301. Power on/off key is seperated from the matrix. The key
LED use the "VREG_KEY_LED" supply voltage. "HALL_SW" informs the status of folder (open or closed) to the.
- EMI ESD Filter
This system uses the EMI ESD filter, GMF05LC to protect noise from IF CONNECTOR part.
- IF connetor
It is 24-pin connector. They are designed to use VBATT, VF, MSM_TDI, MSM_TDO, MSM_TCK, MSM_TMS,
MSM_TRST, MSM_RTCK, RFR, CTS, JIG_ON, USB_VBUS, RXD, TXD, BOOT_SW and GND. They connected to
power supply IC, microprocessor and signal processor IC.
2-3
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Circuit Description
2-2-3. Audio
YMU765 has a built-in amplifier, and thus, is an ideal device for outputting sounds that are used by mobile phones
in addition to game sounds and ringing melodies that are replayed by a synthesizer.
The synthesizer section adopts "stereophonic hybrid synthesizer system" that are given advantages of both FM
synthesizers and Wave Table synthesizers to allow simultaneous generation of up to 32 FM voices and 32 Wave
Table voices. Furthermore, YMU765 has a built-in hardware sequencer that helps to realize complex play without
heavily loading the host CPU. And this device also has a built-in circuit for controlling vibrators and LEDs
synchronizing with play of music. The consumed electric current can be stopped to the minimum by power down
mode when not operating.
The hardware sequence built in this device allows playing of the complex music without giving excessive load to the
CPU of the portable telephones. Moreover, the registers of the FM synthesizer can be operated directly for real time
sound generation, allowing, for example, utilization of various sound effects when using the game software installed
in the portable telephone.
2-2-4. Memory
The signals in the MSM6250 enable two memories. They use volt supply voltage, VREG_MSMP, VREG_MSME
from the PM6650. This system uses SEC's memory, KBE00F005M-F411. It is consisted of 1G bits flash NAND
memory and 512M bits SDRAM memory. It has 16 bit data line, D1[0~15] which is connected to MSM6250.
2-2-5. Camera
The camera module consists of VGA pixel of system LSI(Samsung Techwin), 1/5.8" VGA CMOS image sensor with
an embedded image signal processor. Pixel size is 4.0 um and effective resolution is 640(H) x 480(V).
2-2-6. Irda
This system uses IRDA module, HSDL_32085, Agilent's. It uses two power signals, "VREG_MSMP" for circuit and
"VBATT" for LED.
2-2-7. Bluetooth
This system uses Bluetooth module, LBDA245AN0, Murata's. Chip solution is of Broadcom, BCM2004. It uses a
power signal, "VREG_BT". This system uses Blue-Q interface in that module has RF circuit and base band bluetooth
part is in MSM6250.
2-4
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3. Exploded View and Parts List
3-1. Exploded View
QCK01
QFR01
QVO01
QCA01
QFU01
QLC01
QSP01
QMO01
QHI01
QKP01
QME01
QSH01
QMP01
QAN01
QRE01
QCR06
QSC01
QFL01
QMW02
QRF03
QCR04
QSC13
QRF01
QIF01
QBA01
3-1
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