Motorola V820 User manual

Service M anual
Level 2
Preliminary
Model V810
CDMA 800, 1900MHz & Analog 800MHz

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© Copyright 2003 by Motorola, Inc. All rights reserved

MContents
V
810
Product Description………………………………
…
5Audio Control Circuitry………………………….…… 21
Introduction to 810…………………………….……
…
5 Audio Lineup……….……………………………………. 21
CDMA Dual Band-Tri-mode………………………
…
5 Sidetone (DSP)...……………………………………..…
…
22
Non Qualcomm IC’s………………………………… 6 Transmit Path Audio…………………………….………. 22
CDMA-PCS 1900Mhz Band………………………
…
7 MSM Block Diagram…………..………………………
…
23
CDMA Dual Band Trimode Phone………………… 7 A/D Converter and Filtering………………..…………… 23
Performance Specification…………………………
…
7 TX Volume Control…….………………………………
…
23
Channel Number………….…………………………. 7 Headset Microphone Path………...…………………….. 23
External Microphone Path………...…………………….. 23
Specifications……….……………………….……… 9 Receive Audio Path……….…………….………………
…
24
CDMA 800Mhz Channel Numberin…..……………. 9 RX FIR Filter……………………………………………
…
24
Brief IC functional description……………………… 8 Codec RX Gain…………………………………………
…
24
Foreward………………………………….…………
…
12 Ear Speaker Path…………………………………………
.
24
Scope of Manual…………….………………..…….. 12 Headset Speaker Path……………………………………. 24
Replacement parts ordering………………………… 12 External Speaker Path……………………………………
.
25
Serivce…………………………………….……..…
…
12 MIDI Alert Interface……………………………………
…
25
Genaral Safety Information……….………………… 13 MMI Alert Interface……………………………………
…
25
Portable Operation………………….………….……. 13 Keypad Interface…………………………………………
.
25
Mobile Operation……………….……………..…….. 13 Flip Open/Close Detection……………………….……… 26
Display Module Interface……………………………….. 26
Camera…………………………………………………… 26
Cellular Overvie
w
………………………...………
…
14 LED's……………………………………………………
…
26
Overall Concept……………………………………
…
14
Hypothetical Cell System…………………………… 15 Disassembly Procedure…………………………….…
…
30
Operation……………………………………………
…
15 Remove Main Board……………………………………
…
30
Service Area…………………………………………
.
15 Remove Keypad………………………………………….
.
30
PCS System…………………………………………
…
15 Remove Flip Assembly………………………………….. 31
Remove Flip Hinge………………………………………
.
31
Remove Flip Assembly……………………………….….
.
32
Circuit Description & Theory of operation……… 16 Remove Rubber Bumper………………………………… 32
Receiver…………………………….………………
…
16 Remove Flip Screws……………………………………
…
33
Block Diagram.……………………………………… 17 Remove Flip Cover………………………………………
.
33
Transmitter…………………………….……………
…
18 Remove Bracket Sub LCD………………………………. 34
Systhesizer…….……………………………………
…
18 Remove Camera Connector……………………………… 34
Control Logic Circuitry……………………………
…
19 Remove Camera Assembly………………………………
.
35
Overview……..…………………….………………
…
19 Remove Vibrator……………………………………… 35
Baseband Processor IC….……...…………………… 19 Display Disassembly……………………………………
…
36
PM6000……………………………………………… 20 Main Display Connector…………………………………
.
36
Flash/PSRam Memory…………......………………
…
20
Accessory Interface…………...……………………. 20 Product Support Tools…………………………………. 39
Battery Interface……………………………………
…
21 Gate 24………………………………………..……….…
…
40
Power Distribution………………………..…………. 21 Troubleshooting………………………………………. 41
Exploded View Diagram………..……………………... 46
3

4© 2003 Motorola, Inc.
Contents
V810
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Product Description
5 Motorola Confidential Proprietary
V810 CDMA DUAL BAND TRI-MODE PHONE
Introduction The V810 CDMA phone consists of a main housing assembly
and a flip assembly. The phone has the main circuit board,
battery, headset jack, and accessory connector in the main
housing assembly. The display and Camera are located in the
hinged flip assembly.
The flip assembly includes the entire hinge mechanism and is
attached to the main housing by four screws. There is a full
display on the inside of the flip assembly and a OLED on the
outside of the flip assembly.
Headset
Volume
Earpie
Anten
Displa
Voice
Left Soft
Manu
Key
Right Soft
TALK
Micr
opho
Accessory Connector
Power/End
5
-
Way Navigation
Camera
Smart/select

Product Description
6 Motorola Confidential Proprietary
The main housing assembly includes a battery cover, chassis,
main circuit board, keypad and plastic front housing.
The main circuit board is comprised of the Receiver,
Transmitter, Synthesizer and Control Logic Circuitry which
together form the dual band tri-mode phone electronics.

7© 2003 Motorola, Inc.
V810 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

82003
V810 Product Description
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9© 2003 Motorola, Inc.
V810 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 © 2003 Motorola, Inc.
V810 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 128 X 160 Pixel diagonal have 10 lines, 260K TFT Display
caller ID LCD(graphics) 96X39, pixel OLED
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)