Motorola V120X User manual

Motorola V.series™ 120x
CDMA 800/1900/AMPS 800
Service Manual Level 3

120X
COMPUTER SOFTWARE COPYRIGHTS
The Motorola products described in this instruction manual may include
copyrighted Motorola computer programs stored in semi-conductor memo-
ries or other media. Laws in the United States and other countries preserve
for Motorola certain exclusive rights for copyrighted computer programs,
including the exclusive right to copy or reproduce in any form the copy-
righted computer program. Accordingly, any copyrighted Motorola computer
programs contained in the Motorola products described in this instruction
manualmaynotbecopiedorreproducedinanymannerwithouttheexpress
written permission of Motorola. Furthermore, the purchase of Motorola prod-
ucts shall not be deemed to grant either directly or by implication, estoppel,
or otherwise, any license under the copyrights, patents or patent applica-
tions of Motorola, except for the normal non-exclusive, royalty free license
to use that arises by operation of law in the sale of a product.

3© 2001 Motorola, Inc.
Contents
120X
Personal Communications Sector
Product Description . . . . . . . . . . . . 5
CDMA Dual Band Trimode Phone. . . 5
General . . . . . . . . . . . . . . . . . . . . . . .5
Advantages of CDMA 1X. . . . . . . . . .5
Key Product Features . . . . . . . . . . . . 6
Accessory Connector. . . . . . . . . . . . . 6
120X Audio Logic ICs . . . . . . . . . . . . 6
Brief IC functional description . . . . . .6
CDMA-PCS 1900 Mhz Band . . . . . . . 7
Environmental . . . . . . . . . . . . . . . . .11
Foreward . . . . . . . . . . . . . . . . . . . . .12
Scope of Manual . . . . . . . . . . . . . . .12
Replacement Parts Ordering . . . . .12
Service. . . . . . . . . . . . . . . . . . . . . . .12
General Safety Information . . . . . . .13
Portable Operation. . . . . . . . . . . . . .13
Mobile Operation . . . . . . . . . . . . . . .13
Cellular Overview . . . . . . . . . . . . .15
Overall Concept. . . . . . . . . . . . . . . .15
Hypothetical Cell System. . . . . . . . .16
Operation. . . . . . . . . . . . . . . . . . . . .16
Service Area . . . . . . . . . . . . . . . . . .16
PCS System. . . . . . . . . . . . . . . . . . .16
Circuit Description & Theory of Opera-
tion . . . . . . . . . . . . . . . . . . . . . . .17
Baseband or Audio Logic Section . .17
BAsic Features . . . . . . . . . . . . . . . .17
RF Interface. . . . . . . . . . . . . . . . . . .17
Clock Support . . . . . . . . . . . . . . . . .17
Audio Features. . . . . . . . . . . . . . . . .17
RF Section. . . . . . . . . . . . . . . . . . . .18
IFR3000. . . . . . . . . . . . . . . . . . . . . .18
RFT3100 . . . . . . . . . . . . . . . . . . . . .19
VCO/PLL Module . . . . . . . . . . . . . . .19
Reference Oscillator. . . . . . . . . . . . .19
Power Amplifier . . . . . . . . . . . . . . . .19
Theory of Operation . . . . . . . . . . . . .19
Receiver Section . . . . . . . . . . . . . . .19
Transmitter Section . . . . . . . . . . . . .20
Frequency Synthesizer Section . . . .20
Receiver Audio. . . . . . . . . . . . . . . . .21
Transmitter Audio. . . . . . . . . . . . . . .21
Audio Logic Block Diagram . . . . . . .22
RF Side Block Diagram . . . . . . . . . .23
Disassembly Procedure . . . . . . . .25
Introduction . . . . . . . . . . . . . . . . . . .25
Recommended Tools . . . . . . . . . . .25
Disassembly Procedure. . . . . . . . . .25
Assembly Procedure . . . . . . . . . . . .25
Product Support Tools . . . . . . . . .29
Flashing and Flexing /NAM Program-
ming . . . . . . . . . . . . . . . . . . . . . . . . .29
About Junior Board Operation . . . . .29
Junior Box Setup . . . . . . . . . . . . . . .30
Test and Phasing . . . . . . . . . . . . . . .31
Test Procedure . . . . . . . . . . . . . . .32
Hardware Introduction . . . . . . . . . . .32
Automatic Call-Processing Tests. . .32
Analog Test Measurements . . . . . . .32
Digital Test Measurements. . . . . . . .32
Equipment Setup . . . . . . . . . . . . . . .33

46/19/02
Contents120X
RF Cable Test . . . . . . . . . . . . . . . . .34
Setup for Analog Call. . . . . . . . . . . .35
RX Sensitivity (SINAD) . . . . . . . . . .36
TX Power Out Test . . . . . . . . . . . . .37
TX Frequency Error Test . . . . . . . . .38
TX Maximum Deviation Test . . . . . .39
TX SAT Deviation Test . . . . . . . . . .40
TX ST Deviation Test . . . . . . . . . . .41
Setup for CDMA Call . . . . . . . . . . . .42
Making a CDMA phone Call . . . . . .43
Setup for CDMA RF Parametric Mea-
surements . . . . . . . . . . . . . . . . . . . .44
Making a Receiver Sensitivity Measure-
ment. . . . . . . . . . . . . . . . . . . . . . . . .45
Receiver Test Termination. . . . . . . .46
CDMA Transmitter Tests. . . . . . . . .47
CDMA Transmitter Power Range Test48
FER with AWGN Tests . . . . . . . . . .49
Radio Comm . . . . . . . . . . . . . . . 50
1x Test Procedure . . . . . . . . . . . . . .51
800 CDMA RX Test Setup . . . . . . . .55
800 CDMA TX Test Setup . . . . . . . .59
Troubleshotting . . . . . . . . . . . . . . .60
Sprint PCS CDMA Programming. . .60
Introduction . . . . . . . . . . . . . . . . . . .61
Testing after Repair. . . . . . . . . . . . .61
No Turn ON-Debug Procedure . . . .62
Internal Charger Test Debugging . .62
Receiver Troubleshotting. . . . . . . . .63
Transmitter Troubleshooting . . . . . .63
Antenna Circuit:A3 . . . . . . . . . . . . .67
Antenna Cicuit:A3B . . . . . . . . . . . . .68
Duplexer circuit: A3c. . . . . . . . . . . .69
FE/IF CDMA: A04 . . . . . . . . . . . . . .70
FE circuit: A4b . . . . . . . . . . . . . . . . .71
IF circuit: A04c. . . . . . . . . . . . . . . . .72
IF CEll/REF OSC:A05 . . . . . . . . . . .73
IF Circuit: A05b. . . . . . . . . . . . . . . . .74
IFFILT circuit: A05c . . . . . . . . . . . . .75
Circuit: A05d . . . . . . . . . . . . . . . . . .76
REF OSC Circuit: A05e . . . . . . . . . .77
PWR DET/TXUPMIX: A06 . . . . . . . .78
PWR DET/TXUPMix : A06b . . . . . .79
PWR DET/TXUPMix : A06c . . . . . .80
TX circuit: A06 . . . . . . . . . . . . . . . . .81
SYN: A07b . . . . . . . . . . . . . . . . . . . .82
PA’S:A08 . . . . . . . . . . . . . . . . . . . . .85
TX: A08 . . . . . . . . . . . . . . . . . . . . . .86
TX1900: A08c . . . . . . . . . . . . . . . . .87
TX800: A08d . . . . . . . . . . . . . . . . . .88
Connectors: A9 . . . . . . . . . . . . . . . .89
Harness/PWR (PM): A10 . . . . . . . .90
Harness/PWR (PM): A10b . . . . . . .91
Memory/Proc: A11 . . . . . . . . . . . . . .92
MSM:A11b . . . . . . . . . . . . . . . . . . . .93
MSM Circuit:A11 . . . . . . . . . . . . . . .94
keypad: A12 . . . . . . . . . . . . . . . . . . .95
Side 1:A 13. . . . . . . . . . . . . . . . . . . .96
Side2 :A13 . . . . . . . . . . . . . . . . . . . .97
Replacement Parts. . . . . . . . . . . . .98
Mechanical Exploded Diagram. . . . .98
Mechanical Parts List . . . . . . . . . . . .99
Electrical Parts List. . . . . . . . . . . . .100

5© 2001 Motorola, Inc.
Personal Communications Sector
Product Description
120X
CDMA DUAL BAND
TRI MODE PHONE
General:
120X - CDMA Dual Band Tri Mode Phone
120X also known as V120 1X is a CDMA2000
1XRTT version of V.120C. It uses Qualcomm chip
set and software. This is a dual band tri mode
phone- 1900Mhz CDMA / 800Mhz CDMA /
800Mhz AMPS.
What is 1X?
CDMA 1X has many names such as CDMA 2000,
IS-2000, 2.5G, CDMA One, IS95C, and 3G1X. As
a fundamental way of thinking CDMA 1X is to
CDMA as NAMPS is to AMPS. Using the 1.25
MHz bandwidth of a CDMA channel the CDMA
1X can adjust the amount of supplemental channels
based on the data needs.
Advantages of CDMA 1X:
1. Approximately 2X voice capacity over IS-
95B.
2. High Data Rates:
—144 kbps full mobility
—384 kbps low speed mobility
—2 Mbps for fixed installations
3. Easy up grade for service providers who are
currently operating systems using IS-95. All
software enhancements.
4. Backward compatible with IS-95
—120X due to lower cost chipset can support
data rates of 153.6kbps down/9.6kbps up.
5. 120X is similar to V.120C in looks, form factor,
housing and accessories. There are a number of
key enhancements added to the design.
—Silver color for front housing and battery
door
—TMF display(vs current super twisted
nematic display)
—Lens color changed to match the silver
housing.
—Chrome finish to the lens bezel.
Voice Key
Record and activate
voice notes,phonebook
and shortcutnames
RightSoft Key
Performfunctionsidentified
byrightdisplayprompt
Scroll Keys
Movethrough menusand lists
AccessoryConnectorPort
Insertcharger,
F
M
S
t
e
r
e
o
R
a
d
i
o
TalkKey
make and answer
calls,viewrecent
dialed callslist
Left Soft Key
Performfunctions
identified byleft
displayprompt
VolumeKeys
Adjustearpiece and
ringervolume
Earpiece
Menu Key

62/26/02
120X Product Description
KEY PRODUCT FEATURES
—Higher data rates
—Stylish and sleek design that fits perfectly
in your hand for optimal comfort
—Save time with voice activated dialing and
menu control
—Make notes using the 120 seconds voice
note recorder
—Fast and easy text messaging including E-
Mail making it easy to stay in the loop
—Create an entertainment experience with
optimal FM stereo Radio and MP3 player
accessories.
—WAP micro browser for instant access to
valuable information while on the go
—Full PIM functionality with alarm and
calendar settings
—Up to 500 names and number entries in
address book with unlimited entries per
name
—Add distinctive alert to selected address
book entries and recognize incoming ID by
alert
—Three Games
—Personalize your own look with colorful
Phone Wrap cover
—19 keys on the keypad for synergy support
—Volume and smart keys on the sides
—Integrated headset jack on the top above
which is the power button
Accessory connector:
•17 pins CE bus connector, access to USB,
RS232, power, ground, analog and digital audio,
FM stereo headset.
•Batteries: 1000 mAh Lithium ion same as
V.120C
120X AUDIO LOGIC ICs
Brief IC functional description:
1. Qualcomm Baseband IC is used in 120X
—U1000: MSM5105 –uP, DSP, CoDec,
Vocoder, ADC, PDM, RF interface, USB
logic.
—U3000: PM1000-LDO’s, RTC/XO, GP
ADC, State Machine w/POR, Battery
Control, SBI Control.
—U200: IFR3000: RX IF- Baseband
Converter extracts BB components from
CDMA/Amp signals.
—U130: RFR3300: LNA, mixer
—U500: RFT: Baseband to RF transmit
processor.
—PA2001: 4C/5C
2. Non Qualcomm Baseband IC is used in 120X
—U2000: 32 Mbit (4 Mbyte) Intel Sawtooth
C3-Main software code
—U2001: 8 Mbit (1Mbyte) Intel Jaguar B3-
NVM for phasing, voice notes, phone
book, etc.
—U2002: 8 Mbit(1 Mbyte) SRAM
—U3800: Semtech SC801 Charger
Controller
—U5000: Harness ASIC - Have the following
features: 1. Parallel to Serial conversion 2.
16 additional dedicated GPIO and 8
optional GPIO 3. EPIT (Enhanced
Programmable Interrupt Timer) 4. CE bus
multiplexing, to allow Qualcomm based
radio to look like a CE bus compliant radio.
5. One wire bus serial interface for battery
EPROM.
—U5001: Phillips ISP1105 USB transceiver
—Y3000: 32.768Khz xtal- provide reference
clock to the microprocessor during sleep
mode operation.

72/26/02
120X Product Description
CDMA-PCS 1900 Mhz BAND
Performance specification:
General Frequency and channel information:
Channel No., Tx Frequency (Mhz), Rx
Frequency (Mhz)
The 1900 MHz band is split into 6
blocks(ABCDEF) of channels. usually only
one block is used in a given geographic area.
There are no “standard” primary and second-
ary channels.
The actual primary and secondary channel
depends on which block is used.
The lowest valid channel number is 25.
The highest valid number is 1175.
Total Number of valid channel numbers is 46.
CDMA 1900MHz Performance Specifications
General.
Channel No. Tx Frequency
(Mhz)
Rx
Frequency
(Mhz)
25 1851.25 1931.25
200 1860.00 1940.00
400 1870.00 1950.00
600 1880.00 1960.00
800 1890.00 1970.00
1000 1900.00 1980.00
1175 1908.50 1988.50

82/26/02
120X Product Description
l
Table 1: Specifications
Function Specification
Frequency Range 1850 to 1910 MHz(tx), 1930 to 1990(RX)
RF Channel Bandwidth 1.25 MHz
Channels 46 (Channel number spaced at an increment of-25, beginning
channel, #25 lowest frequency and ending channel number
1175 highest frequency)
Duplex Spacing 80 MHz
Frequency Stability Center Frequency* +/- 8.5 X10-8
+/- 150 Hz of incoming RX CDMA signal.
Operation Voltage +3.6 V nominal (3.0 -4.4 V DC)
RF Power output 0.20 Watts - 23 dBm into 50 ohms (CDMA, nominal)
input/output impedance 50 ohms(nominal)
Spurious /Harmonic emissions Complies with title 47, Part 22 of the code of federal regula-
tions.
Vocoders 8kbps, 13kbps, EVRC
Transmit Time Error +/- 1 US
Modulation Type 1M25D1W(1.25MHz bandwidth), OQPSK, G7W(CDMA)
Transmit Duty Cycle Variable- full, 1/2, 1/4, 1/8 rate(CDMA Mode)
CDMA Transmit Waveform
Quality(rho) 0.94
Receive Sensitivity -104dBm(CDMA, 0.5% Static FER, 8kbps Vocoder)
Display Large 96X64 Graphic LCD Display offering 4 Lines of Text,!
Line of icons and I line of Prompts.

92/26/02
120X Product Description
Specifications
CDMA 800 MHz Channel Numbering
General information:
The 800 MHZ CDMA channel numbering evolved
from the Amps analog system which shares the
same spectrum.
The Amps channel spacing is 30 KHz, because the
CDMA signal BW=1.25 MHz, the actual CDMA
signal must be spaced every 41 channels
(41*30 KHZ = 1.23MHZ)
In a dual-mode system, CDMA signals would
never occupy analog control channels 313 to 354.
A -System preferred channels: primary =283,
Secondary = 691
B- System preferred channels: Primary =384,
Secondary = 777
The lowest valid CDMA channel is 1013.
The highest valid CDMA channel is 777.

10 2/26/02
120X Product Description
Table 2: Overall System CDMA 800MHz
Function Specification
Frequency Range 824.04 - 848.97 MHz Tx,
Channels 1 to 799, f Tx = 0.03 * N+ 825 MHz
Channels 990 to 1023, f Tx = 0.03(N—1023) + 825 MHz
869.04 - 893.97 MHz Rx
Channels 1 to 799 is f Rx = 0.03 * N+ 870 MHz
Channels 990 to 1023, f Rx = 0.03(N—1023) + 870 MHz
Channel Spacing 30 KHz
Channels 832
Duplex spacing 45 MHz(amps)
Frequency Stability +/- 2.5 ppm (Amps)
Operating Voltage +3.6 v nominal (3.0v to 4.4 v DC)
Display 96 X 64 Pixel array 120X have a one line external display to allow viewing of
caller ID and other phone status messages while the flip is closed.
RF Power Output max power 25dBm for CDMA(800 & 1900) and 26.1 dBm for Analog.
Input/Output Imped-
ance 50 ohms (nominal)
Spurious / Harmonic
Emissions Complies with Title 47, Part 22 of the code of Federal Regulations.
Audio Distortion Less than 5% at -26dB
Hum and Noise(C-
MSG) 32 dBm below +/- 8kHz deviation(transmit and receive)
Modulation F3: + 12 kHz for 100% at 1 kHz, AMPS (wide)
1M25D1W (1.25 MHz bandwidth) CDMA
Transmit Audio
Response 6 dBm/octave pre-emphasis
Transmit Audio
sensitivity (AMPS)
+ 2.9 kHz deviation (nom.) @ 97 dBm SPL input @ 1 kHz
Transmit Duty Cycle full, 1/2, 1/4, 1/8 rate (CDMA Mode)
CDMA Transmit
Waveform
Quality(Rho)
0.94
Receiver Sensitivity -116 dBm (AMPS, SINAD, C-MSG weighted) Sinad 12dB or greater
-104 dBm (CDMA, 0.5% Static FER) 0.5% or less
Alternate Channel
Desense Protection -60 db@+/- 60kHz (Amps)