Motorola V680 User manual

Motorola V680 Service Manual
The World’s Leading Cellular
Telephone Manufacturer

Motorola V680 Service Manual
UIM Card
UIM Card contains your Phone Number, service details, and phonebook and
Message memory.
Do not bend or scratch your UIM Card. Avoid exposing your UIM Card to static
electricity, water, or dirt.
General Safely Information
Exposure to Radio Frequency Signals
You wireless handheld portable telephone is a low power radio transmitter and
receiver. When it is ON, it receives and also sends out radio frequency (RF) s i g
n a l s .
∙International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1996
∙Verband Deutscher Elektrotechniker(VDE) DIN-0848
∙United States Federal Communications Commission, Radio Frequency Exposure
Guidelines(1996)
∙National Radiological Protection Board of the United Kingdom, GS 11, 1988
∙American National Standards Institute(ANSI) IEEE. C95. 1-1992
∙National Council on Radiation Protection and Measurements(NCRP). Report 86
∙Department of Health and Welfare Canada. Safety Code 6
These standards were based on extensive scientific review. For example, over
120 scientists, engineers, and physicians from universities, government health
agencies, and industry reviewed the available body of research to develop the
updated ANSI Standard.
The design of your phone complies with these standards when used normally.
Use only the supplied or an approved replacement antenna. Unauthorized
antennas, modifications, or attachment could damage the phone and may violate
local agency regulations.
Summary and Electrical Performance
Introduction
Congratulations on your purchase of a cellular telephone from Motorola, the world
leader in cellular technology.
All Motorola cellular telephones are manufactured to exacting specifications and
worldclass quality standards, and are designed to withstand the harshest
environmental conditions. Our commitment to Total Customer Satisfaction and
over sixty five years of experience in personal communications mean you can
depend upon the quality of this Motorola product.
Motorola Digital Cellular Phone V680 is a super-compact, super-light type of the
mobile communication terminal devices. It is a cellular communication device that
employs the Code Division Multiple Access (CDMA) technology with spectrum
efficiency, economy, price competitiveness and high portability.
As one of the modulation or multiple access methods, CDMA has adopted the
direct sequence spread spectrum communication method mainly used for the
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military communication devices to maintain security and to ease the difficulty in
call connection in the densely populated area such as the present metropolitan
area. Its soft/softer handoff, hard handoff and dynamic RF power control
technologies help resolve the call disconnection. In addition, it provides a right
solution to address the subscriber capacity problems by enabling the subscribers
in certain areas to use of the same frequency.
The CDMA digital cellular network is configured with the Mobile Switching Office
(MSO), the Base Station Controller (BSC), Base Station Transceiver System
(BTS) and the Mobile Station (MS). And MS and BTS comply with the IS-95A OR
TSB-74 specifications.
The relevant MS specifications are as follows:
- IS-95A (Common Air Interface): Protocol regulations between MS and BTS
- TSB-74 ; Support for 14.4kbps data rate and PCS interation for wideband
spead spectrum cellular systems.
- IS-98: Least performance specifications for MS hardware
Frequencies for cellular mobile communications
■Transmission (Tx) frequency band: 826 MHz ~ 846 MHz
■Reception (Rx) frequency band: 871 MHz ~ 891 MHz
■Channel separation: 1.23 MHz
MS Tx/Rx Frequency
Channel
No.
Tx center
Frequency
(MHz)
Rx center
Frequency
(MHz)
Channel
No.
Tx center
Frequency
(MHz)
Rx center
Frequency
(MHz)
37 826.11 871.11 507 840.21 885.21
78 827.34 872.34 548 841.44 886.44
119 828.57 873.57 589 842.67 887.67
160 829.80 874.80 630 843.90 888.90
201 831.03 876.03 671 845.13 890.13
242 832.26 877.26
283 833.49 878.49
384 836.52 881.52
425 837.75 882.75
466 838.98 883.98
Product Specifications
The V680 Digital Cellular Phone complies with the following technical
specifications.
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Items Specifications Remarks
Temperature Range -20 ~ -50℃
Tx Frequency Band 826.11MHz ~ 845.13MHz
Rx Frequency Band 871.11MHz ~ 890.13MHz
Tx Center Frequency 130.38MHz
Rx Center Frequency 85.38MHz
Local Oscillator Frequency Band 956.49MHz ~ 975.51MHz
Waveform Quality 0.944 or over
Time Reference Within ±1㎲
Receiver Sensitivity -104dBm Within FER=0.5%
Dynamic Range -104 ~ -25dBm Within FER=0.5%
Tx Frequency Deviation Within ±300Hz
Occupied Frequency BandWidth 1.48MHz or below
Conductible Spurious(Tx) 900KHz, –42dBc/30KHz or below
1.98MHz, -54dBc/30KHz or below
Minimum Control Output Power -50dBm or below
Open Loop Power Control
(@-25dBm) -48±9.5dBm
Open Loop Power Control
(@-65dBm) -8±9.5dBm
Open Loop Power Control
(@-104dBm)
+18~+30dBm
Power +23~+30dBm
(All technical specifications other than the above follow the IS-95A or TSB-74 specifications.
External View and Configuration of the Device
External View
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Functional Description of LCD Display
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Configuration
The V680 Digital Cellular Phone is a super-compact and super-light terminal of
96g and used with battery pack. Its configuration is as follows.
Name of the
Device
Configuration Main Parts
Antenna
Main board
(Equipped with the control port and the transceiver
part)
LCD module, Mic, Receiver unit mount
Housing Front
Housing Rear
Housing Flip Front
Housing Flip Rear
SMD PCB Flip
SUA-Light Guide
Escutcheon distributer
SUA-DOME switch
Spring-Locker
Key-Volume
Key-Telephone
Logo-Flip
CAP Audio jack
CAP Connector
Dummy hole
Handset
Screw
V680
Battery Pack
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Test & Adjustments
Test equipment and tools
No. Name of Equipment Type name Maker Qty Remarks
1 CDMA mobile station
test set
8924C H/P(Hewlett
Packard)
1 Or equivalent
2 Spectrum analyzer 8596E “ 1 “
3 Mixed
signal oscilloscope
54645D “ 1 “
4 D.V.M 506 Protek 1 “
5 DC power supply E3631A H/P(Hewlett
Packard)
1 “
6 Accessory
-Interface connector
-RF connector
RF Test connection & Measurements
1)Measurement of current consumption
V680 SET
CDMA MOBILE STATION TEST SET
HP8924C
ANTENNA IN
RF IN/OUT
DC POWER SUPPLY
E3631A
DC 4.3V
V680 CONNECTION CABLE
<Figure 1>
Feed power to the H/P E3631A pwer supply to measure the current consumption
as shown in Figure 1 above.
Feed pwer and measure the current for standby state. Then, measure the current
for busy state with a call connected to HP8924C equipment
(If your feed power, the pwer supplied and the current consumed will be
displayed on the monitor.)
*Measurement items:
Current for standby state(measureed in Sleep/Idle mode)
Current for busy state(full rate current measured under the condition of Tx output
+10dBm)
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2) Measurement of the Rx/Tx part
DC POWE
R
CDMA MOBILE STATION TEST
V
680
E3631A HP8924
C
DC RF
<Figure 2>
Setup the equipment as shown in Figure 2.
Switch the power on at least 30 minute before use, to preheat the equipment.
Measure the tranceiver part using the auto-test program after connecting the
V680 terminal to the HP8924Cequipment
*Spec
Waveform Quality 0.944 ~ 1
Time Reference Within ±1㎲
Tx Frequency Deviation Within ±300Hz
Rx Sensitivity -104dBm(within FER=0.5%)
Dynamic Range -104 ~ 25dBm(within FER=0.5%)
Refer to the IS-95A or TSB-74 specifications for all technical specifications other
than the above.
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Exploded View
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Disassembly & Assembly
The use of the screwdrive, which is in accordance with the standard is required as
a set being reassembled
Do not give too much pressure on the set
Be precautious not to give any damages on Plastics, LCD and the Flexble PCB
Preparatory Devices
1. Fully assembled phone 2. Screw Driver(star shaped: T6)
3. Tweezers 4. Antenna Tool
1 2 3 4
Firstly, Shut the phone’s power off
Secondly, put upward the battery locker as showing below picture and separate
it’s pulling up the battery pack
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Cap connector Separation
Separate the Cap connector as below
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UIM Card Separation
Extract the UIM Card as being pushed up with one of fingers as in the picture
Cap Dummy hole Separation
Separate the Dummy hole Cap with Tweezers
Be cautious in order not to make any scratches on Plastic if excessive force put
into.
Sua Antenna Separation
Separate the Sua Antenna using the Antenna tool in counter clockwise and get it
out of the phone as below
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Loosening the Screws(Housing Rear)
Loosen all(4 each of a set) screws in the phone with Star-shaped driver
At this time, if excessive force put into it or not using the standard
screwdriver(Star-shaped) the screw could be damaged. A little high attention
would be required
Separate the Housing Rear
As with the picture below, hold it with its side upward, and pull up the Front
Housing deliberately.
In the opposite side, do and follow the same procedures, and Do try not to make
any damages on Hooks
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Separate the upper hook with finger nails
Take attention not to get the front Housing damaged with excessive force
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Completion of the Housing Rear Separation
FPC Connector Separation
Separate the FPC Connector not to get the PCB Flexible damaged
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Main PCB Separation
Separate the Main PCB as below picture
Key Telephone Separation
Separate the Key Telephone as below
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Completion of the Housing Front Separation
Sheet Flip Separation
Take out the Sheet Flip with Tweezers as below
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Screw Separation
Loosen the Screw as below. At this time, if excessive force put into it or not using
the standard screwdriver(Star-shaped: T6), the screw could be damaged
Tape Front Separation
Take out the tape with Tweezers as below
Separation Hinge and PCB Flexible - 1
Insert the Tweezers vertically through the furrow and push the hinge to the
direction showing. Keep this being vertical and push it to the left, then separate
the Front Housing pushing downward.
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Separation Hinge and PCB Flexible - 2
Separate the PCB Flexible from the Housing Front cautiously as the picture below.
Do NOT put excessive force not to get the PCB Flexible damaged
Housing Flip Front Separation
As the below picture, Put finger into a finger-nail between the Housing Flip Front
and Housing Flip Rear, and pull it up to the side locker if some excessive force put
into, it’s possible for Flip Ass’y to get bent, so take attention closely.
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Completion of the LCD Window Separation
Vibrator / Speaker / MIDI Speaker Separation - 1
Take out the Vibrator out with the tweezers
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