Samsung sm-r750 User manual

N
Wireless Device
SM-R750
1. Safety Precautions
2. Specification
3. Product Function
4. Exploded View and Parts list
5. MAIN Electrical Parts List
6. Level 1Repair
7. Level 2Repair
8. Level 3Repair
9. Reference data
Notice: All functionality, features, specifications, and
other product information provided in this document,
including but not limited to, benefits, design, pricing,
components, performance, availability, and capabiliti
-es of the product are subject to change without
notice. Samsung reserves the right to alter this doc
-ument or the product described herein at anytime,
without obligation to provide notification of such
changes.
Wireless Device CONTENTS

This Service Manual is aproperty of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
Samsung Electronics Co.,Ltd.
2014. 09. Rev.1.0
ⓒ

2. Specification
2-1
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2-1. GSM General Specification
EGSM900 DCS1800 WCDMA
2100 WCDMA 900
Freq.
Band[MHz]
Uplink/
Downlink
880~915
925~960 1710~1785 1805~1880 1922~1977 2112~2167 882~912 927~957
ARFCN range 0~124 & 975~1023 512~885 UL:
9612~9888
DL:
10562~10838
UL:
2712~2863
DL:
2937~3088
Tx/Rx spacing 45MHz 95MHz 190MHz 45MHz
Mod. Bit rate/
Bit Period 236.8kbps 236.8kbps 42.2Mbps(DL)
5.76Mbps(UL) 42.2Mbps(DL)
5.76Mbps(UL)
Time Slot Period/
Frame Period 576.9us 4.615ms 576.9us 4.615ms
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
Modulation GMSK
8PSK GMSK 8PSK
QPSK
HPSK
16QAM
64QAM
QPSK
HPSK
16QAM
64QAM
MS Power 33dBm~5dBm 30dBm~0dBm 24dBm~
-50dBm 24dBm~ -50dBm
Power Class 4(GMSK)
E2(8PSK) 1(GMSK) E2(8PSK) 33
Sensitivity -102dBm -100dBm -106.7dBm -103.7dBm
TDMA Mux 8 8 - -
Cell Radius 35Km 2Km 2Km 2Km

Specification
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
2-2
2-2. GSM Tx Power Class
TX Power
control level EGSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
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
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

3. Operation Instruction and Installation
3-1
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Main Function
•Tizen OS
•HSPA+ 21Mbps /HSUPA 5.7Mbps
•2.0"OCTA S-AMOLED (360*480)
•GPS /BT v4.1 /USB v2.0 /WiFi (802.11 b/g/n)
•Sensors: Accelerometer, Gyro, Magnetic, Barometer, Light, UV, HRM Sensor
•4GBytes (eMMC) + 512M Bytes (LPDDR3) Memory
•IP67
•Additional :
-1.2
GHz Quad Core CPU
-SHealth, SVoice, Navigator, Music Player, Find My Deive
-Schedule, Running, New Briefing, Weather, Alarm, Gallery, Notification

1. Safety Precautions
1-1
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
1-1. Repair Precaution
Before attempting any repair or detailed tuning, shield the device from RF noise or static
electricity discharges.
Use only demagnetized tools that are specifically designed for small electronic repairs,
as most electronic parts are sensitive to electromagnetic forces.
Use only high quality screwdrivers when servicing products. Low quality screwdrivers can
easily damage the heads of screws.
Use only conductor wire of the properly gauge and insulation for low resistance, because of
the low margin of error of most testing equipment.
We recommend 22-gauge twisted copper wire.
Hand-soldering is not recommended, because printed circuit boards (PCBs) can be easily
damaged, even with relatively low heat. Never use asoldering iron with apower rating of
more than 100 watts and use only lead-free solder with a melting point below 250°C (482°F).
Prior to disassembling the battery charger for repair, ensure that the AC power is disconnected.
Always use the replacement parts that are registered in the SEC system. Third-party replac
ement parts may not function properly.

Safety Precautions
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
1-2
1-2. ESD(Electrostatically Sensitive Devices) Precaution
Many semiconductors and ESDs in electronic devices are particularly sensitive to static discha
rge and can be easily damaged by it. We recommend protecting these components with cond
uctive anti-static bags when you store or transport them.
Always use an anti-static strap or wristband and remove electrostatic buildup or dissipate
static electricity from your body before repairing ESDs.
Ensure that soldering irons have AC adapter with ground wires and that the ground wires are
properly connected.
Use only desoldering tools with plastic tips to prevent static discharge.
Properly shield the work environment from accidental electrostatic discharge before opening
packages containing ESDs.
The potential for static electricity discharge may be increased in low humidity environments,
such as air-conditioned rooms. Increase the airflow to the working area to decrease the
chance of accidental static electricity discharges.

5. MAIN Electrical Parts List
5-1
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
SEC-CODE Design LOC Description
0403-001972 ZD400 DIODE-ZENER
0404-001887 D402 DIODE-SCHOTTKY
0404-001887 D403 DIODE-SCHOTTKY
0406-001375 ZD501 DIODE-TVS
0406-001506 ZD200 DIODE-TVS
0406-001506 ZD201 DIODE-TVS
0406-001553 C458 DIODE-TVS
0406-001592 ZD202 DIODE-TVS
0406-001592 ZD203 DIODE-TVS
0406-001592 ZD404 DIODE-TVS
0406-001596 ZD402 DIODE-TVS
0406-001596 ZD403 DIODE-TVS
0505-002652 TR400 FET-SILICON
0903-001959 U504 IC-MICROCONTROLLER
1108-000556 UCP300UP IC-MCP
1201-003699 U100 IC-POWER AMP
1201-003701 U103 IC-POWER AMP
1201-003729 U106 IC-GPS AMP
1203-004818 U518 IC-POSI.FIXED REG
1203-007000 U509 IC-POSI.FIXED REG
1203-007294 U511 IC-POSI.FIXED REG
1203-008037 U203 IC-POSI.FIXED REG
1203-008057 U400 IC-POWER SUPERVISOR
1203-008200 U500 IC-DC/DC CONVERTER
1203-008204 U403 IC-POWER SUPERVISOR
1203-008261 U204 IC-POSI.FIXED REG
1203-008261 U401 IC-POSI.FIXED REG
1203-008287 U404 IC-VOL. DETECTOR
1203-008355 U532 IC-SWITCH REG.
1204-003527 U202 IC-AUDIO PROCESSOR
1205-004833 U201 IC-CODEC
1205-004931 UCP300 IC-MODEM
1205-005079 U104 IC-TRANSCEIVER
1209-002227 U506 IC-PRESSURE SENSOR

Main Electrical Parts List
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
5-2
1209-002245 U510 IC-MAGNETIC SENSOR
1209-002303 U502 IC-ETC SENSOR
1209-002308 U507 IC-ACCEL./GYRO SENSOR
1404-001724 TH100 THERMISTOR-NTC
1404-001724 TH300 THERMISTOR-NTC
1404-001724 TH500 THERMISTOR-NTC
2007-007315 R307 R-CHIP
2007-007943 R439 R-CHIP
2007-008052 R418 R-CHIP
2007-008052 R501 R-CHIP
2007-008052 R503 R-CHIP
2007-008055 R440 R-CHIP
2007-008055 R504 R-CHIP
2007-008419 R448 R-CHIP
2007-008420 R223 R-CHIP
2007-008420 R224 R-CHIP
2007-008420 R225 R-CHIP
2007-008420 R232 R-CHIP
2007-008420 R404 R-CHIP
2007-008483 R510 R-CHIP
2007-008516 R207 R-CHIP
2007-008516 R314 R-CHIP
2007-008516 R406 R-CHIP
2007-008516 R408 R-CHIP
2007-008516 R449 R-CHIP
2007-008516 R509 R-CHIP
2007-008588 R409 R-CHIP
2007-008588 R500 R-CHIP
2007-008774 R414 R-CHIP
2007-008774 R455 R-CHIP
2007-008786 R413 R-CHIP
2007-008798 R421 R-CHIP
2007-008806 R101 R-CHIP
2007-009157 R319 R-CHIP
2007-009157 R400 R-CHIP

Main Electrical Parts List
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
5-3
2007-009157 R402 R-CHIP
2007-009212 R502 R-CHIP
2007-009408 R300 R-CHIP
2007-009408 R301 R-CHIP
2007-009954 R100 R-CHIP
2007-009954 R410 R-CHIP
2007-011378 R324 R-CHIP
2007-011378 R326 R-CHIP
2007-011378 R328 R-CHIP
2007-011378 R363 R-CHIP
2007-011541 R505 R-CHIP
2007-011541 R506 R-CHIP
2007-011541 R514 R-CHIP
2007-011541 R515 R-CHIP
2007-011541 R516 R-CHIP
2007-011541 R517 R-CHIP
2007-011541 R518 R-CHIP
2007-011541 R519 R-CHIP
2007-011544 R329 R-CHIP
2007-011544 R330 R-CHIP
2007-011546 R316 R-CHIP
2007-011546 R317 R-CHIP
2007-011546 R318 R-CHIP
2007-011548 R427 R-CHIP
2007-011548 R436 R-CHIP
2007-011551 R438 R-CHIP
2007-011585 R452 R-CHIP
2007-011586 R200 R-CHIP
2007-011586 R201 R-CHIP
2007-011586 R202 R-CHIP
2007-011586 R203 R-CHIP
2007-011586 R204 R-CHIP
2007-011591 R302 R-CHIP
2007-011591 R303 R-CHIP
2007-011591 R304 R-CHIP