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CDMA Portable
Cellular Telephone
SCH-570
SERVICE Manual
CDMA Portable Cellular Telephone CONTENTS
1. General Introduction
2. Specification
3. NAM Programming
4. Data Transfer
5. Circuit Description
6. Exploded View and Its Parts List
7. PCB Diagrams
8. Troubleshooting
9. Test Command T ble
a
10. Block & Circuit Diagrams
Samsung Electronics Co.,Ltd. SEP. 1998.
Printed in Korea
Code No. : GH68-60724A
HONGKONG CHINA.
1. General Introduction
The SCH-570 cellular phone functions as only digital cellular phone working in CDMA (Code Division
Multiple Access) mode. CDMA type digital mode applies DSSS (Direct Sequential Spread spectrum) mode
which first came to be used in the military.
The DSSS reduces channel cross talk and allow to use one frequency channel by multiple users in the same
specific area, resulting in increase of channel capacity to about ten times compared to that of analog mode
currently used.
Soft/Softer Handoff, Hard Handoff, and Dynamic RF Power Control technologies are combined into this
phone to reduce the call drop while usage.
CDMA digital cellular network consists of MSO (Mobile Switching Office), BSC (Base Station Controller),
BTS (Base Station Transmission System), and MS (Mobile Station). MS meets the specifications of the below:
IS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum
Cellular System
IS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread Spectrum Cellular Systems
IS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station
IS-126 : Mobile Station Loopback Service Options Standard
SCH-570 is composed of main handset, desktop charger, standard battery.
1-1
1.1 General
Frequency Range
Transmitter : 824.64 ~ 848.37 MHz
Receiver : 869.64 ~ 893.37 MHz
Channel Spacing : 1.23 MHz
Number of Channels : 20 FA
Duplex Spacing : 45 MHz
MSC Transmitter Frequency
FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY
1 1011 824.640MHz 11 404 837.120MHz
2 29 825.870MHz 12 445 838.350MHz
3 70 827.100MHz 13 486 839.580MHz
4 111 828.330MHz 14 527 840.810MHz
5 152 829.560MHz 15 568 842.040MHz
6 193 830.790MHz 16 609 843.270MHz
7 234 832.020MHz 17 650 844.270MHz
8 275 833.250MHz 18 697 845.910MHz
9 316 834.480MHz 19 738 847.140MHz
10 363 835.890MHz 20 779 848.370MHz
MSC Receiver Frequency
FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY
1 1011 869.640MHz 11 404 882.120MHz
2 29 870.870MHz 12 445 883.350MHz
3 70 872.100MHz 13 486 884.580MHz
4 111 873.330MHz 14 527 885.810MHz
5 152 874.560MHz 15 568 887.040MHz
6 193 875.790MHz 16 609 888.270MHz
7 234 877.020MHz 17 650 889.270MHz
8 275 878.250MHz 18 697 890.910MHz
9 316 879.480MHz 19 738 892.140MHz
10 363 880.890MHz 20 779 893.370MHz
1-2
2. Specification
Frequency Range Transmitter : 824.64 MHz ~ 848.37MHz
Frequency Range Receiver : 869.64 MHz ~ 893.37 MHz
Waveform Quality : above 0.944
Time Reference : within 1uS
RX Sensitivity : 104 dBm, FER = within 0.5%
Dynamic Range : 104 dBm ~ 25 dBm, FER = within 0.5%
TX Output Power : Maximum 320 mW (25dBm)
TX Frequency Deviation : within 300 Hz
Occupied Band Width : 1.32 MHz
TX Conducted Spurious Emissions : 900 kHz below 42 dBc / 30 kHz
: 1.98 MHz below 54 dBc / 30 kHz
Minimum TX Power Control : below 50 dBm
Open Loop Power Control : 25 dBm : 57.0 dBm ~ 38.5 dBm
65 dBm : 17.5 dBm ~ 1.5 dBm
104 dBm : 18.0 dBm ~ 30.0 dBm
Stand-by Output Power : below 61 dBm
Closed Loop TX Power Control Range : Test 1 within 24 dB
Test 2 0 ms ~ 2.5 ms
Test 3 within 24 dB
Test 4 within 24 dB
Test 5 within 24 dB
Size (mm) : 108 46 25 (Standard battery)
Weight (g) : 128 (1000mA Standard battery)
2-1
5. Circuit Description
5-1 Logic Section
5-1-1 Power Supply
With the battery installed on the phone and by FLASH ROM
pressing the END/ key, the VBATT and
ON_SW signals will be connected. This will turn One 8 MBIT FROM is used to store the terminal's
on U123 DC_DC convertor. program. Using the down-loading program, the
This in turn will be supplied to PIN3, PIN4 of program can be changed even after the terminal is
regulators U124, PIN6 of regulators U122, thus fully assembled.
releasing them from the shut-down state to output
regulated 3.3V. ( The VBATT applied to ON-SW
will turn on Q103(DTC144EE) resulting in the SRAM
signal ON_SW_SENSE to change the start from
High to Low.) One 2 MBIT SRAM is used to store the internal
The MSM recognizes this signal and sends out flag information, call processing data, and timer
PS_HOLD (logical HIGH) to turn on Q102 even data.
after the PWR key is released.
The power from U124 is used in the digital part of
MSM and BBA. The power from U122 is used in EEPROM
analog part of BBA.
One 128 KBIT EEPROM is used to store ESN,
NAM, power level, volume level, and telephone
5-1-2 Logic Part number.
The logic part consists of internal CPU of MSM,
RAM, ROM and EEPROM. The MSM receives KEYPAD
TCXO and CHIPX8 clock signals from the BBA
and controls the phone during the operation. The For key recognition, key matrix is to set up using
major components are as follows: SCAN0-6 of STORE signals and KEY0-3 of input
CPU : INTEL 80186 core (inside the MSM) ports of MSM. Ten LEDs and backlighting
FLASH ROM : U701 - 8 Mbit FLASH MEMORY circuitry are included in the keypad for easy
SRAM : U703 - 2 Mbit STATIC RAM operation in the dark.
FLASH ROM : U702 - 1 Mbit FLASH MEMORY
EEPROM : U102 - 128 Kbit SERIAL EEPROM
LCD MODULE
CPU
LCD module contains a controller which will
INTEL 80186 CMOS type 16-bit microprocessor is display the information onto the LCD by 8-bit data
used for the main processing. The CPU controls all from the MSM. It also consists a DC-DC converter
the circuitry. For the CPU clock, 27MHz resonator to supply -3.5V for fine view angle and LCD
is used. reflector to improve the display efficiency.
5-1
5-1-3 Baseband Part
MOBILE STATION MODEM (MSM)
The MSM equipped with the INTEL 80186 CPU ADC Interface
core is an important component of the CDMA
cellular phone. The MSM comes in a 176 pins ADC_CLK (pin 3), ADC_ENABLE (pin 1) and
TQFP package. ADC_DATA (pin 2) are required to control the
internal ADC in the BBA.
MICROPROCESSOR INTERFACE
The interface circuitry consists of reset circuit, Data Port Interface
address bus (A0-A19), data bus (AD0-AD15), and
memory controls (ALE, DT_R, HWR/, LWR/, Includes the UART. Also, supports Diagnostic
RAM_CS/, ROM_CS etc). Monitor (DM), HP equipment interface, down
loading, and data service.
INPUT CLOCK
CODEC Interface
CPU clock: 27 MHz
TCXO/4 (pin 34): 4.92 MHz. This clock signal The MSM sends 2.048 MHz PCM_CLK (pin 19)
from the BBA is the reference clock for the MSM and 8 KHz PCM_SYNC (pin 16, 20) to the CODEC
except in CDMA mode. (U117). The voice PCM data from the MSM (U101)
CHIPX8 : 9.8304 MHz. The reference clock used PCM_DIN (pin 135) is compressed into 8 KHz, by
during the CDMA mode. QCELP algorithm in the CDMA mode.
BBA INTERFACE RF Interface
TX : TX_AGC_ADJ (pin 35) port is used to control
CDMA, FM Data Interface
the TX power level and PA_ON (pin 44) signal is
used to control the power amplifier. This signal
TXIQDATA0-7 (pins 24-32) : TX data bus used
depends on the TX vocoder rate.
during both CDMA and FM mode but it is used
only for CDMA mode at this phone.
RX : AGC_REF (pin 36) port is used to control the
RX gain and TRK_LO_ADJ (pin 45) is used to
compensate the TCXO clock.
Clock
TC_CLK (pin 22), TX_CLK/(pin 23) : Digital to
General Purpose I/O Register Pins
Anolog Converter (DAC) reference clock used in
CDMA TX mode.
Input/output ports to control external devices.
CHIPX8 : ADC reference clock used in CDMA
RX mode.
Power Down Control
When the IDLE/ signal turns to LOW, only the TX
sections will be disabled. If both the IDLE/ and
SLEEP/ change to LOW, all the pins except for the
TCXO and 27MHz clock are disabled.
5-2
5-1-4 Audio Part
TX AUDIO PATH BUZZER DRIVING CIRCUITRY
The voice signal output from microphone is Buzzer generates alert tone when the buzzer
filtered and amplified by the internal OP-AMP receives the timer signal from the MSM, it
and is converted to PCM data by the CODEC generates alert tone. The buzzer level is adjusted
(U117). The signal is then applied to the MSM by the alert signal's period generated from the
(U101)'s internal vocoder. MSM timer.
RX AUDIO PATH KEY TONE GENERATION
The PCM data from the MSM's converted to audio Ringer signal (pin49) out from MSM (U101) is
signal by ADC of CODEC (U117), is then passed through 2 serial LPF consisting of R141,
amplified by the speaker amplifer (U111) to be C146, R145, and C142 amplified at the speaker
sent to the speaker unit. amp (U111), and comes out to speaker.
TX WBD, ST,SAT
These signals are generated from MSM. The
modulation level of TX WBD and ST is 8
kHz/dev, and SAT is 2 kHz/dev.
5-3
5-2 Receiver Section
LOW NOISE AMPLIFIER (LNA, Q302) IF SAW BAND PASS FILTER (FOR CDMA)
The low noise amplifier amplifies a weak signal IF SAW BPF (F303) is used for CDMA system
received from the base station to obtain the having 1.23 MHz wideband and 630 kHz
optimum level (Noise figure = 1.5 dB, bandwidth. The filter also attenuates the image
Gain = 16 dB). product generated at the mixer.
RADIO FREQUENCY BAND PASS FILTER BUFFER AMP (Q304)
(RF BPF, F302)
Buffer (Q304) amplifiers signal to be applied to the
The RF BPF accepts only a specific frequency (881 local input of the down converter (U301) when a
12.5 MHz) from the signal received from the phase is locked between VCO (U341) and PLL IC
base station. The band width is 25 MHz. (U342).
DOWN CONVERTER (MIXER, U301)
First local signal is applied to this down converter.
The down converter transfers the signal amplified
at the LNA into 85.38 MHz IF signal. 85.38 MHz IF
signal is made by subtracting 881 12.5 MHz RF
signal from 966 12.5 MHz first local signal.
AUTOMATIC GAIN CONTROLLER (AGC)
AMP (Q302)
85.38 MHz IF signal is applied to IF AGC amp, the
IF AGC output level is applied to BBA (Baseband
Analog ASIC). The IF AGC amp (Q302) keeps the
signal at a constant level by controlling the gain.
Dynamic range is 90dB, up gain +45dB, and down
gain -45dB.
5-4
VOLTAGE CONTROLLED OSCILLATOR (VCO, DUPLEXER (F301)
U341)
Duplexer (F301) controls to transmit through the
The VCO (U341) generates the signal having 966 antenna only the signals within acceptable Tx
MHz center frequency and 12.5 MHz deviation frequency range (836 12.5 MHz) and to receive
with the voltage control. PLL IC (U342) controls through the antenna only the signals within
this signal. acceptable Rx frequency range (881 12.5 MHz).
It also matches LNA input in receiving part and
PA output in transmitter part with the antenna.
ANTENNA
Antenna allows signals and sends to receive from POWER SUPPLY REGULATOR (U123)
the base station.
The power supply regulator generates a regulated
power.
PHASE LOCKED LOOP (PLL, U342)
Input reference frequency is generated at THERMISTOR (R498)
VC_TCXO (U343) and the divided signal is
generated at VCO. PLL compares the two signals The thermistor (R498) detects temperature. It is
and generates the desired signal with a pre- used to compensate active component
programmed counter which controls voltage. characteristics due to the temperature difference.
VOLTAGE CONTROLLED TEMPERATURE
COMPENSATED CRYSTAL OSCILLATOR (VC-
TCXO, U343)
It provides 19.68 MHz reference frequency to PLL.
A correct frequency tuning is made by the voltage
control.
5-5
5-3 Transmitter Section
BBA (U401) RF BAND PASS FILTER (BPF, F451)
BBA (U401) consists of ADC, DAC, LPF (CDMA), The RF BPF ( F451) accepts only a specific
divider, VCO, logic control circuit, PLL, and mixer. frequency (836 12.5MHz) to send it out to the
base station. The band width is 25 MHz.
BBA performs a specific function between RF part
and logic part, with MSM. The IF signal out from
Rx IF AGC amp is secondly converted through the POWER SUPPLY SWITCHING (U484)
down-converter. The signal passes through the
Power supply switching (U484) turns on
CDMA or FM filter, converts to digital signal
TX_POWER when the phone is in traffic mode and
through ADC, then is sent to MSM. The digital
supplies power to the circuits.
signal out from MSM converts to analog signal
through each filter and the up-converters.
POWER SUPPLY REGULATOR (U482, U483)
POWER AMP MODULE (U467)
The power supply regulators (U482,U483) supply
a regulated power to each part of transmitter.
Power Amp module (U467) amplifies signal (24dB
U482 supplies 3.6V to TX AGC amp (U461) and
Gain) to be sent out to the base station through the
up-converter (U460). U483 supplies 3.0V to power
antenna.
amp module control circuit (U487).
UP CONVERTER (MIXER, U460)
The up-converter (U460) receives the first local
signal to generate 836 12.5 MHz from the BBA.
836 12.5 MHz signal comes out of the mixer
output by subtracting 130 MHz IF signal from 966
12.5 MHz first local signal.
RF AUTOMATIC GAIN CONTROLLER AMP
(U461, U464)
The signal out to the base station should be a
constant level. The TX RF AGC amp controls
power to keep the signal at a constant level.
5-6
6. Exploded View and its Parts List
6-1 Fixed Phone Exploded View
6-1
6-2 Fixed Phone Parts List
6-2
6-3 Rapid Charger View
SEC CODE : GH44 - 40100A
6-3
7. PCB Diagrams
7-1 Cellular Phone
7-1-1 Main Board PCB: Top
7-1
7-1-2 Main Board PCB: Bottom
7-2
7-2 Electrical Parts List
SEC CODE DESCRIPTION PART NO. REMARK
0401 - 001052 DIODE - SWITCHING D101 D109
0405 - 000107 DIODE - VARACTOR D401 D402 D403 D404
0407 - 000115 DIODE - ARRAY D103 D105 D106
0407 - 000122 DIODE - ARRAY D102 D104
0407 - 000127 DIODE - ARRAY D107 D108 D481
0409 - 000108 DIODE - PIN D301
0501 - 000162 TR - SMALL SIGNAL Q116 Q450 Q452
0501 - 000218 TR - SMALL SIGNAL Q102 Q108 Q114 Q301
0501 - 000218 TR - SMALL SIGNAL Q451
0501 - 000457 TR - SMALL SIGNAL Q113 Q115
0501 - 000689 TR - SMALL SIGNAL Q304
0501 - 002063 TR - SMALL SIGNAL Q303
0501 - 002208 TR - SMALL SIGNAL Q109
0504 - 000167 TR - DIGITAL Q119 Q481 Q482
0504 - 000168 TR - DIGITAL Q103 Q121
0504 - 000172 TR - DIGITAL Q111 Q120
0504 - 001016 TR - DIGITAL Q485
0501 - 001062 FET - GaAs U301
0505 - 001095 FET - SILICON U106
0505 - 001119 FET - SILICON Q302
0505 - 001165 FET - SILICON U104
0505 - 001170 FET - SILICON U484
0601 - 000355 LED - CHIP - RED D116
0801 - 000304 IC - CMOS - LOGIC U105
0803 - 003010 IC - TTL U114
0904 - 001183 IC - DSP U201
1001 - 001019 IC - ANALOG MULTIPLEX U481
1103 - 001062 IC - EEPROM U102
1106 - 001126 IC - SRAM U702
1106 - 001130 IC - SRAM U703
1107 - 001062 IC - SRAM U701
7-3
SEC CODE DESCRIPTION PART NO. REMARK
1201 - 000103 IC - AUDIO AMP U111
1201 - 001006 IC - OP AMP U462 U463
1201 - 001090 IC - PREAMP U385
1201 - 001175 IC - PREAMP U464
1201 - 001176 IC - PREAMP U461
1201 - 001257 IC - AGC AMP U302
1201 - 001259 IC - POWER AMP U467
1202 - 000192 IC - CMOS COMPARATOR U118
1203 - 000392 IC - RESET UX101
1203 - 001107 IC - VOLTAGE REGULATOR U482
1203 - 001256 IC - VOLTAGE REGULATOR U382
1203 - 001268 IC - VOLTAGE REGULATOR U124
1203 - 001285 IC - SWITCH VOL. U483
1203 - 001390 IC - VOLTAGE REGULATOR U122
1203 - 001396 IC - PWM CONTROLLER U123
1204 - 001106 IC - ASP U117
1205 - 001253 IC - MIXER U460
1205 - 001383 IC - DATA COMM. U101
1205 - 001451 IC - DATA COMM. U401
1209 - 000142 IC - SYNTHESIZER U342
1209 - 001078 IC - PLL SYNTHESIZER U402
1404 - 001040 THERMISTOR - NTC R498
2007 - 000070 R - CHIP 0 L450
2007 - 000137 R - CHIP 2 K 1/16 W R417 R130
2007 - 000138 R - CHIP 100 1/16 W R154
2007 - 000140 R - CHIP 1 K 1/16 W R192 R205 R156 R158 R147
2007 - 000140 R - CHIP 1 K 1/16 W R132 R188 R346 R416 R451
2007 - 000140 R - CHIP 1 K 1/16 W R209 R345 R109
2007 - 000141 R - CHIP 2.2 K 1/16 W R128 R303
2007 - 000142 R - CHIP 2.7 K 1/16 W R456 R486 R141
2007 - 000143 R - CHIP 4.7 K 1/16 W R129 R145 R152 R173 R176
2007 - 000143 R - CHIP 4.7 K 1/16 W R466 R140 R411
2007 - 000146 R - CHIP 6.8 K 1/16 W R455
7-4
SEC CODE DESCRIPTION PART NO. REMARK
2007 - 000148 R - CHIP 10 K 1/16 W R180 R182 R184 R185 R473
2007 - 000148 R - CHIP 10 K 1/16 W R157 R159 R143 R144 R702
2007 - 000148 R - CHIP 10 K 1/16 W R460 R178 R137R414 R485
2007 - 000148 R - CHIP 10 K 1/16 W R174 R305 R337 R406 R407
2007 - 000148 R - CHIP 10 K 1/16 W R413 R462 R464 R415 R496
2007 - 000148 R - CHIP 10 K 1/16 W U485 R701
2007 - 000149 R - CHIP 12 K 1/16 W R103 R104 U704
2007 - 000151 R - CHIP 15 K 1/16 W R208 R307
2007 - 000152 R - CHIP 20 K 1/16 W R133 R134
2007 - 000153 R - CHIP 22 K 1/16 W R119 R181 R131 R106 R189
2007 - 000153 R - CHIP 22 K 1/16 W R474
2007 - 000155 R - CHIP 27 K 1/16 W R463 R251 R252 R170
2007 - 000155 R - CHIP 27 K 1/16 W R136
2007 - 000157 R - CHIP 47 K 1/16 W R481 R482 R483 R484
2007 - 000157 R - CHIP 47 K 1/16 W R349 R139
2007 - 000159 R - CHIP 56 K 1/16 W R148
2007 - 000162 R - CHIP 100 K 1/16 W R122 R151 R153 R107 R171
2007 - 000162 R - CHIP 100 K 1/16 W R120 R116 R111 R112 R108
2007 - 000162 R - CHIP 100 K 1/16 W R110 R105 R123 R118
2007 - 000164 R - CHIP 150 K 1/16 W R114
2007 - 000171 R - CHIP 0 1/16 W R183 R216 R215 R364 R425
2007 - 000171 R - CHIP 0 1/16 W R408 R409 R165 R204 R418
2007 - 000171 R - CHIP 0 1/16 W C318 C155 R316 R422
2007 - 000171 R - CHIP 0 1/16 W R423 C444 C445 RX201 LX101
2007 - 000172 R - CHIP 10 1/16 W R306 R350 R347 R348 R356
2007 - 000172 R - CHIP 10 1/16 W R339 R341 R401 R419 R344
2007 - 000173 R - CHIP 22 1/16 W R468
2007 - 000155 R - CHIP 27 K 1/16 W R149
2007 - 000772 R - CHIP 33 K 1/16 W R121
2007 - 000831 R - CHIP 39 K 1/16 W R135 R177
2007 - 000932 R - CHIP 470 1/16 W R127 R155 R301
2007 - 000982 R - CHIP 5.6 K 1/16 W R362 R453 R454 R476
2007 - 001119 R - CHIP 680 1/16 W R355
7-5
SEC CODE DESCRIPTION PART NO. REMARK
2007 - 001217 R - CHIP 82 1/16 W R186 R187
2007 - 001244 R - CHIP 91 K 1/16 W R102 R175
2007 - 001288 R - CHIP 18 1/16 W R360
2007 - 001294 R - CHIP 36 1/16 W R191 R193 R194 R336
2007 - 001295 R - CHIP 39 1/16 W R304
2007 - 001305 R - CHIP 120 1/16 W R467 R469
2007 - 001306 R - CHIP 150 1/16 W R361 R358 R309 R310
2007 - 001307 R - CHIP 180 1/16 W R217
2007 - 001311 R - CHIP 270 1/16 W R308 R357
2007 - 001313 R - CHIP 330 1/16 W RX102 RX501 RX502 RX503
2007 - 001313 R - CHIP 330 1/16 W RX504
2007 - 001319 R - CHIP 1.2 K 1/16 W R490 RX101 RX103
2007 - 001320 R - CHIP 1.8 K 1/16 W R410
2007 - 001323 R - CHIP 3 K 1/16 W R475
2007 - 001325 R - CHIP 3.3 K 1/16 W R190
2007 - 001333 R - CHIP 18 K 1/16 W R335
2007 - 000161 R - CHIP 82 K 1/16 W R166
2007 - 002797 R - CHIP 560 1/16 W R452
2007 - 002965 R - CHIP 15 1/16 W R313
2007 - 007001 R - CHIP 3.9 K 1/16 W R160 R161 R179
2007 - 007131 R - CHIP 13 K 1 % 1/16 W R488
2007 - 007132 R - CHIP 15 K 1/16 W R489
2007 - 007133 R - CHIP 300 1/16 W R404
2007 - 007480 R - CHIP 130 K 1 % 1/16 W R101
2007 - 007529 R - CHIP 91 K 1 % 1/16 W R102
2203 - 000138 C - CHIP 1.5 nF R363
2203 - 000233 C - CHIP 100 PF C145 C185 C345 C370 C331
2203 - 000233 C - CHIP 100 PF C334 C347 C359 C491 C493
2203 - 000233 C - CHIP 100 PF C360 C361 C362 C411 C451
2203 - 000233 C - CHIP 100 PF C348 C417 CX501 CX102
2203 - 000233 C - CHIP 100 PF C501 CX502 CX503 CX504
2203 - 000233 C - CHIP 100 PF C306 C307 C309
2203 - 000254 C - CHIP 10 nF C112 C111 C102
2203 - 000254 C - CHIP 10 nF C326 C308 C388 C437
7-6
SEC CODE DESCRIPTION PART NO. REMARK
2203 - 000254 C - CHIP 10 nF C354 C355 C356 C358 C381
2203 - 000254 C - CHIP 10 nF C386 C333 C371 C394 C343
2203 - 000254 C - CHIP 10 nF C121 C349 C461 C403 C475
2203 - 000254 C - CHIP 10 nF C477 C429 C425 C423 C435
2203 - 000254 C - CHIP 10 nF C433 C431 C452 C495 C490
2203 - 000254 C - CHIP 10 nF C457 C492 C481 C487 C471
2203 - 000254 C - CHIP 10 nF C100 C179 C177 C169 C171
2203 - 000254 C - CHIP 10 nF C175 C126 C152 C207 C110
2203 - 000254 C - CHIP 10 nF C441 C418 C472 C473 C484
2203 - 000254 C - CHIP 10 nF C486 C443 C483 C455 C470
2203 - 000254 C - CHIP 10 nF CX101
2203 - 000278 C - CHIP 10 PF C342 C368
2203 - 000330 C - CHIP 12 PF C322
2203 - 000359 C - CHIP 150 PF C453
2203 - 000386 C - CHIP 15 PF C303
2203 - 000425 C - CHIP 18 PF C137 C138
2203 - 000438 C - CHIP 1 nF C125 C101 C140 C190 C344
2203 - 000438 C - CHIP 1 nF C302 C301 C311 C310 C315
2203 - 000438 C - CHIP 1 nF C377 C305 C336 C338
2203 - 000438 C - CHIP 1 nF C450 C414 C428 C426 C424
2203 - 000438 C - CHIP 1 nF C422 C436 C434 C432 C430
2203 - 000438 C - CHIP 1 nF C496 C442 C459 C460 C464
2203 - 000438 C - CHIP 1 nF C419 C454 C408 CX001
2203 - 000438 C - CHIP 1 nF C113 C327
2203 - 000466 C - CHIP 1 PF C317 C332 C325 C420
2203 - 000489 C - CHIP 2.2 nF C148 C402
2203 - 000585 C - CHIP 220 PF C124 C387 C139 C195
2203 - 000628 C - CHIP 22 PF C314 C328
2203 - 000696 C - CHIP 2 PF C456
2203 - 000714 C - CHIP 3.3 nF C117
2203 - 000854 C - CHIP 39 PF C404 C405 C412 C413
2203 - 000870 C - CHIP 3 PF C319 C320 C341 C316
2203 - 000940 C - CHIP 470 PF C144 C335 C329
7-7
SEC CODE DESCRIPTION PART NO. REMARK
2203 - 000940 C - CHIP 470 PF CX002 CX103
2203 - 000941 C- CHIP 470 PF C149
2203 - 000995 C - CHIP 47 PF C463 C458
2203 - 001033 C - CHIP 5.6 nF C153
2203 - 001086 C - CHIP 5 PF L301
2203 - 001124 C - CHIP 680 PF C132 C133
2203 - 001153 C - CHIP 68 PF C337 C404 C405
2203 - 001210 C - CHIP 8.2 nF C438 C421
2203 - 001259 C - CHIP 8 PF C313
2203 - 001385 C - CHIP 1.5 PF C462
2203 - 001405 C - CHIP 22 nF C141 C142 C154
2203 - 001416 C - CHIP 33 nF C415
2203 - 001432 C - CHIP 47 nF C365 CX106
2203 - 001385 C - CHIP 4.7UF C164
2203 - 002687 C - CHIP 1.2 nF C131
2203 - 003054 C - CHIP 9 PF C304
2203 - 005052 C - CHIP 3.3PF C406
2203 - 005061 C - CHIP 100 nF C176 C174 C178 C170 C172
2203 - 005061 C - CHIP 100 nF C173 C168 C129 C114 C128
2203 - 005061 C - CHIP 100 nF C146 C136 C205 C202 C203
2203 - 005061 C - CHIP 100 nF C184 C116 C118 C157
2203 - 005061 C - CHIP 100 nF C127 C106 C108 C120 C122
2203 - 005144 C - CHIP 1 UF C130 C143 C150 C151
2404 - 000139 C - TA 10 UF 6.3 V C107 C109 C312 C330 C389
2404 - 000139 C - TA 10 UF 6.3 V C439 C401 C488 C485 C353
2404 - 000139 C - TA 10 UF 6.3 V C357 C474 C476
2404 - 000151 C - TA 1 UF 16 V C410 C165
2404 - 000167 C - TA 2.2 UF 16 V C134 C482
2404 - 000259 C - TA 47 UF 6.3 V C440
2404 - 000274 C - TA 1.5 UF 16 V C416
2404 - 000312 C - TA 470 nF 16 V C350
2404 - 001032 C - TA 33 UF 6.3 V C123 C382
2404 - 001064 C - TA 10 UF 6.3 V C346
2703 - 000109 INDUCTOR 100 nH L404 L309
7-8
SEC CODE DESCRIPTION PART NO. REMARK
2703 - 000237 INDUCTOR 750 nH L403
2703 - 000261 INDUCTOR 390 nH L311
2703 - 000300 INDUCTOR 1 UH L455 L305 L314 L343 L346
2703 - 000300 INDUCTOR 1 UH L342
2703 - 000301 INDUCTOR 2.7 UH L312 L344
2703 - 001011 INDUCTOR 100nH L402
2703 - 001040 INDUCTOR 10nH L454
2703 - 001167 INDUCTOR 8.2 nH L341
2703 - 001172 INDUCTOR 100 nH L458 L303 L317
2703 - 001173 INDUCTOR 12 nH L451
2703 - 001175 INDUCTOR 56 nH L355 L356
2703 - 001179 INDUCTOR 10 nH L351 L354
2703 - 001181 INDUCTOR 27 nH L316
2703 - 001189 INDUCTOR 18 nH C391
2703 - 001263 INDUCTOR 4.7 nH C446
2703 - 001284 INDUCTOR 5.6 nH L302 C391
2703 - 001306 INDUCTOR 27 nH L453 L456
2703 - 001409 INDUCTOR 12 nH L306 C115
2703 - 001543 INDUCTOR 33 nH L401
2703 - 001563 INDUCTOR 10 uH L101
2703 - 001613 INDUCTOR 18 nH L304
2703 - 001693 INDUCTOR 330 nH L310
2802 - 001048 RESONATOR 27 MHz X101
2806 - 001146 OSCILLATOR - VCO U341
2809 - 001208 OSCILLATOR - VCTCXO 19.68MHz U343
2904 - 000297 FILTER - SAW 85.38 MHz F303
2904 - 001011 FILTER - SAW 881.5 MHz F302
2904 - 001012 FILTER - SAW 836.5 MHz F451
2904 - 001004 FILTER - DUPLEXER 881 MHz F301
3710 - 001105 CONNECTOR - SOCKET 2 P J102
3710 - 001117 CONNECTOR - SOCKET 24 P CON100
3710 - 001302 CONNECTOR - SOCKET 18 P J101
3722 - 001172 JACK POWER J104
GH07 - 20551A DISPLAY LCD
GH39 - 20013A CBF - SIGNAL -
GH71 - 10680A NPR - ANT,LING
7-9
8. Troubleshooting
8-1 Logic Section
8-1-1 No Power
8-1
8-1-2 Abnormal Initial Operation (Normal +3.3V voltage source)
8-2
8-1-3 Abnormal Backlight Operation
8-3
8-1-4 Abnormal Key Data Input
8-4
8-1-5 Abnormal Keytone
8-5
8-1-6 Abnormal Alert Tone
8-6
8-2 RF Section
8-2-1 RF Secton Troubleshooting
8-7
8-2-2 Receiver Part
8-8
8-2-3 Transmitter Part
8-9
10. Block & Circuit Diagrams
10-1 Block Diagram