Samsung SGH-Z140 User manual

SGH-Z140
UMTS TELEPHONE CONTENTS
1. Specification
2. Circuit Description
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams
7. Flow Chart of Troubleshooting
UMTS TELEPHONE

Samsung Electronics Co.,Ltd. September. 2005
Printed in Korea.
Code No.: GH68-08261A
BASIC.
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.
ⓒ

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1. Specification
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1-1
EGSM900 DCS1800 PCS1900 W-CDMA
Freq.
Band[MHz]
Uplink/Downlink
890~915
935~960 1710~1785 1805~1880 1850~1910 1930~1990 1920~1980 2110~2170
ARFCN range 0~124 &
975~1023 512~885 512~810 UL:9612~9888 DL:10562~10838
Tx/Rx spacing 45MHz 95MHz 80MHz 190MHz
Mod. Bit rate/
Bit Period 270.833kbps 3.692us 270.833kbps 3.692us 270.833kbps 3.692us 3.84Mcps
Time Slot
Period/Frame
Period
576.9us
4.615ms 576.9us 4.615ms 576.9us 4.615ms Frame length : 10ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK QPSK
HQPSK
MS Power 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm 24dBm ~ - 50dBm
Power Class 4
(max +33dBm) 1 (max +30dBm) 1 (max +30dBm) 3 (max +24dBm)
Sensitivity -102dBm -100dBm -100dBm -106.7dBm
TDMA Mux 8 8 8
Cell Radius 35Km 2Km 2Km 2Km
1-1. GSM General Specification

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Specification
1-2
TX Power
control level GSM900
533±2dBm
631±2dBm
729±2dBm
827±2dBm
925±2dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX Power
control level PCS1800
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
1-2. GSM TX power class

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2. Circuit Description
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2-1
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.

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Circuit Description
2-2
- 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

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Circuit Description
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2-3
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.

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Circuit Description
2-4
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.

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3. Exploded View and Parts List
3-1
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3-1. Exploded View
QFR01
QCK01
QKP01
QME01
QSH01
QMP01
QIF01
QCR04
QBA01
QRF03
QRE01
QVO01
QAN01
QMW02
QFL01
QSP01
QMO01
QLC01
QFU01
QCR06
QRF01
QSC13
QSC01
QHI01
QCA01

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Exploded view and Part List
3-2
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3-2. Parts List
Location NO. Description SEC CODE
QBA01 ㅤBATTERY-1000MAH,BLK,ENG,M;BST456ABVC GH43-01797A
QCA01 ㅤUNIT-CAMERA;SGH-Z140,S5K53BEA,-,USA, GH59-02091A
QCK01 ㅤPMO-CAMERA KEY;SGH-Z140,PC+POLY URET GH72-24665A
QCR04 ㅤSCREW-MACHINE;PH,+,M1.4,L4,NYLOK,SWR 6001-001479
QCR06 ㅤSCREW-MACHINE;PH(PI2.5),+,M1.4,L3.5, 6001-001155
QIF01 ㅤPMO-IF COVER;SGH-Z140,PC+POLY URETHA GH72-22380A
QLC01 ㅤLCD-SGHZ140 LCD;LTD180QC-F0A,SGH-Z14 GH07-00712A
QME01 ㅤUNIT-KEY PAD;SGH-Z140,KBSGHZ140KM R2 GH59-02092A
QMO01 ㅤMOTOR DC-SPHA880 MOTOR;DMJBRK20ML,SP GH31-00145A
QMP01 ㅤPBA MAIN-SGHZ140;SGHZ140,SEG,GERM,PB GH92-02145A
QMW02 ㅤPCT-MAIN WINDOW V2;SGH-Z140,ACRYL SH GH72-24809A
QRF01 ㅤMPR-TAPE RF COVER;SGH-Z140,PET,PI7XT GH74-15117A
QSC01 ㅤMPR-SCREW CAP PC SHEET;SGH-Z140,PC S GH74-15486A
QSC13 ㅤRMO-REAR SCREW CAP RUBBE;SGH-Z140,SI GH73-05129A
QSH01 ㅤMEC-SHIELD CAN;SGH-Z140,EU,-,-,-,-,S GH75-07325A
QSP01 ㅤSPEAKER;0.7W,8ohm,89dB+-2dB,800Hz,14 3001-001766
QVO01 ㅤPMO-VOLUME KEY;SGH-Z140,PC+POLY URET GH72-24664A
QFL01 ㅤMEC-FOLDER LOWER;SGH-Z140,EU,-,-,-,- GH75-07178A
ㅤQHI01 MEC-HINGE;SGH-Z140,EU,-,-,-,-,SIL,- GH75-07179A
QCH03 ㅤMEC-CAMERA HINGE;SGH-Z140,EU,-,-,-,- GH75-07180A
QFR01 ㅤMEC-FRONT COVER;SGH-Z140,EU,-,-,-,-, GH75-07181A
ㅤQRF03 PMO-EAR COVER;SGH-Z140,PC+POLY URETH GH72-22392A
QKP01 ㅤMEC-KEYPAD;SGH-Z140,EU,-,-,-,-,BLK,- GH75-07257A
QFU01 ㅤMEC-FOLDER UPPER V2;SGH-Z140,EU,-,-, GH75-07996A
ㅤQLB02 MEC-SUB LCD BRACKET V2;SGH-Z140,EU,- GH75-08025A
QAN01 ㅤANTENNA-SGHZ140;HFP-01502-0000AA,SGH GH42-00562A
QRE01 ㅤMEC-REAR COVER;SGH-Z140,EU,-,-,-,-,B GH75-07182A