Sony Ericsson CMD-J70 Service Manual
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SPECIFICATIONS
Signalling format Dual-Band
Frequency range E-GSM 900 MHz, Transmit: 880 ~ 915 MHz
Receive: 925 ~ 960 MHz
GSM 1800 MHz, Transmit: 1710 ~ 1785 MHz
Receive: 1805 ~ 1880 MHz
GSM 900 power class Class 4 (2W)
GSM 1800 power class Class 1 (1W)
SIM 3V and 5V Pluggable mini SIM card / SAT Class 2
Display High resolution full graphics display
4 Grey-scale type
Resolution: 96 x 92 pixels
7 lines (excluding 1 status icon line), proportional font
Channel spacing 200 kHz
Number of channels E-GSM 900: 174
GSM 1800: 374
Frequency stability Transmit frequency drift (synchronized)
< 0,1 p.p.m
RF output power E-GSM 900: 2W, 33dbm
GSM 1800: 1W, 30dbm
Antenna type Patch antenna
Battery Lithium Ion / 800 mAh
Standby : 60 -330 h
Talk time : 2.5 - 9 h (Network dependent)
Dimensions 113 mm x 44.4 mm x 21.5 mmñ
Weight 92 g
Volume 82 cmñ
(Network dependent)
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Power requirements 3.9 V (nominal)
Operating temperature -20C to +55C
Accessories operating temperature ± 0C to +45C
Connectors External RF connector
Universal Connector (12-pin flat I/O connector)
Mini plug head set jack
WAP Supported by the WAP v.1.1 compliant browser
WTLS Class 1, HTTP/HTML
Email Supported by the e-mail protocols: SMTP & POP 3
Supplied accessories AC Adapter QN-3AC1 (AEP)
AC Adapter QN-3AC2 (UK)
Battery QN-J7BPS
Optional accessories Handsfree Car Kit QN-3HFK
Car Phone Holder QN-J7PH
Cigar Lighter Charger QN-3CC
Data Cable RS QN-3RS
Data Cable USB QN-3USB
Mobile Data Software QN-3DS
Headset QN-3HS
Travel Charger QN-3TC
Design and specifications are subject to change without notice.
This equipment complies with the essential requirements of the Directive 1999/5/EC Radio and
Telecommunications Terminal Equipment Directive.
NOTE
This device contains electrostatically sensitive components. Damage can occur to these
components if the appropriate handling is not adhered to.
ESD Handling precautions
A working area in which Digital Cellular Telephones may be safely handled with out undue risk of damage
from electrostatic discharge must be available.
The area must be equipped as follows:
½ All working surfaces must have a dissipative bench mat, safe for use with live equipment, connected
via 1.2M• resistor to a common ground point.
½ A quick release skin contact device with a flexible cord, which has a b uilt-in safety resistor of a range
between 5.2K•
point.
½ All containers and storage must be of the conductive type.
Batteries:
This device contains an internal battery in addition to the external battery pack. These batteries are
recyclable and should be disposed of in accordance with national legislation. They must not be incinerated,
or disposed of as ordinary rubbish.
Ω and 1.2M•Ω shall be used. The flexible cord must be attached to a dissipative earth
:
Danger of explosion if battery is incorrectly replaced.
CAUTION
Replace only with the same or equivalent type recommended
by the manufacturer.
Discard used batteries according to the manufacturer’s
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat og type.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda
paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
Explosionsfara vid felaktigt batteribyte.
VARNING
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.
ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type
anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
2
TABLE OF CONTENTS
SECTION 1
Specifications ……………………………………………………… (see Cover sheet)
SECTION 2
General Descriptions
2.1 Multi Band ………………………………………………………. 04
2.2 Radio Frequency Power Level ……………………………….. 05
2.3 Speech Codec …………………………………………………. 05
2.4 Languages ……………………………………………………….05
2.5 Battery Charging ……..………………………………………… 06
2.6 Battery Safety ……………………………………………………06
2.7 Battery Capacity ….…………………………………………….. 06
2.8 Accessory Interface ..…………………………………………... 07
SECTION 3
Operating Instructions
3.1 Basic Features …………………………………………………..08
3.2 Security Codes ………..…………………………………………09
3.3 Icon Glossary …………………………………………………… 10
3.4 Menu Overview ………………………………………………….10
3.5 Applications Menu ……………………………………………… 10
SECTION 4
Disassembling/Testing
4.1 Disassembly ……………………………………………………..11-12
4.2 Interface to GSM-Tester ………………………………………..13
4.3 Jigs and Tools…………………………………………………… 14
SECTION 5
Programming Instructions
5.1 Requirement ..……………………………………………………15
5.2 Hardware Set-up ..…...………………………………………….15
5.3 Software Set-up .………………………………………………...15
5.3.1 Software Download to Mobile ………………………………. 15-16
5.3.2 Save Personal Data in Mobile ……………………………….16
5.3.3 Reset of Personal Data ……………………………………… 16
5.3.4 Reset of Security Lock ………………………………………. 16
SECTION 6
Explosion View
6.1 Spare Parts List ………………………………………………… 17
6.2 Accessories ……………………………………………………...18
3
SECTION 2
GENERAL DESCRIPTIONS
2.1 Multi-band :
CMD-J70 support E-GSM 900 and GSM 1800 multi-band functionality.
For the use in Europe and in other countries worldwide, ETSI has specified GSM standards into two frequency
bands. That is the 900-MHz and 1800-MHz band and is usually referred to as GSM900 and GSM1800 (formerly
DCS1800).
While the 900-MHz band has 124 channels (extended version: 175), the 1800-MHz band with its 375 channels
provides a three-times higher capacity. Not only as a result of this large range of channels but also due to the low
transmission power and the transmission distance, GSM1800 supports a higher quantity of RF-channels.
The Dual band technology enables a network operator with spectrum at both 900MHz and 1800MHz to support the
seamless use of dual band handsets across both frequencies. By supporting seamless handovers between
900MHz and 1800MHz, Dual band networks can provide major benefits in terms of capacity enhancement and
revenue optimisation through the introduction of new services.
The CMD-J70 is a phase II, GSM900 class 4, GSM1800 class 1 mobile phone.
The nominal maximum output power for GSM900 is 2W, for GSM1800 1W.
It supports the extra functionality required for multi-band mobile stations: Inter-band/”seamless” hand-over,
channel assignment, cell selection and re-selection, all between both bands within a Public Land Mobile Network.
The manual and automatic PLMN selection in both bands is given.
The user does not need any special action to use the multi-band functionality of the phone.
Users are able to manually roam between PLMN’s operating in GSM900 and GSM1800 bands.
E-GSM
With the further development of the GSM standard, an additional range of frequencies has been made available to
the “Global system for mobile communications”. For each of the two duplex frequency ranges, one for the forward
direction and one for the reverse direction, additional 10 MHz have been added to the bottom end of the bands,
extending the frequency range to 50 further channels.
The mobile station transmits in the 880- to 915 MHz range, and the base station transmits in the 925- to 960 MHz
range. A duplex spacing of 45 MHz is used, the base station always transmits on the high side of the duplex
frequency pair.
The numbering for these additional channels is from 974 to 1023. This is done to avoid assigning one channel
number twice within the same standard.
Compared to the primary GSM system, Channel number 0 is used in the extended GSM system, since it does not
make sense to reserve it at a guard band within the E-GSM bands. Now, the lowest channel, number 974 (880.0
MHz), serves as the guard band between GSM and other services on lower frequencies.
GSM 1800
GSM1800 uses the frequency ranges of 1710 to 1785 MHz in the uplink direction, and 1805 to 1880 MHz in the
downlink direction.
From these figures it follows that the duplex spacing is 95 MHz with 374 channels with bandwidths of 200 kHz
each.
The channels are numbered from 512 to 885 in order to distinguish them from the channels in the primary and
extended GSM frequency bands.
4
2.2 Radio Frequency Power Levels:
Between the GSM1800 and the E-GSM900 System are differences regarding the power level. GSM1800 basically
needs lower power levels. If the performance of a MS for GSM system was certified of 2W (Power Class 4), then in
the GSM1800 system it is only 1W (Power Class 1). There are also reduced BTS power levels due to microcell
applications, which means instead of the 40W (Power Class 4) in the GSM 900 system, GSM1800 needs only
20W (Power Class 1).
Preferences GSM 900 E-GSM GSM 1800
Frequency band
uplink:
downlink:
Radio Channels 124 174 374
max. BS-Power 40 W (46 dBm) 20W (43 dBm)
max. MS-Power 2 W (33 dBm) 1W (30 dBm)
MHz
890 - 915
935 - 960
MHz
880 - 915
925 - 960
MHz
1710 -1785
1805 - 1880
2.3 Speech Codec
The CMD-J70 supports the following speech codecs.
Full Rate (FR) Codec
•
•
Half Rate (HR) Codec
•
Enhanced Full Rate (EFR) Codec
The speech codec forms the human voice into a digital signal, which is sent in the GSM network.
The GSM system currently has three different speech codec standards.
At first, the Full Rate (FR) Codec was introduced. With new requirements concerning speech quality and
availability of radio channel resources two further standards were introduced, the Half Rate (HR) Codec and the
Enhanced Full Rate (EFR) Codec. The Half Rate (HR) Codec requires only half the channel capacity of a Full Rate
(FR) Channel. The Enhanced Full Rate (EFR) Codec requires the same radio channel resources as a Full Rate
(FR) Codec but offers Fixed Line quality with superior vocal clarity.
2.4 Languages
The CMD-J70 supports the following languages:
• Bulgarian • French • Portugese
• Croatian • German • Romanian
• Czech • Greek • Russian
• Danish • Hungarian • Slovakian
• Dutch • Italian • Slovenian
• English • Norwegian • Spanish
• Finnish • Polish • Swedish
• Turkish
5
2.5 Battery Charging
There is no charging circuitry in the battery pack. The CMD-J70 h as complete charger function internally.
The telephone can be charged only with the battery connected the phone. This situation can be sub-divided into
two situations: the phone is on or off. It can be charged with the AC Adapter, Travel Charger or Cigar Lighter
Charger.
The battery symbol is used to indicate the charging, and to indicate when the battery is fully charged. This is done
using the following sequence of icons:
The uncharged segments of the battery are moving in a right to left manner until the charging stops. The
sequences for each charging level is repeated until the battery is charged to that level.
When the charging sequence is finished the flashing of the battery level sign stops.
The phone shows the full-battery icon.
2.6 Battery Safety
The battery pack contains a single Li-ion cell, a safety circuitry and, in addition, a microprocessor unit which
manages RTC information by reading out the binary counter value in the microprocessor. The charging circuitry
and the safety circuitry together guarantee a double fail-safe battery pack. This means that each component can
be either short or open and still all the safety requirements will not be violated.
The safety concept protects against:
Over voltage: The charging is stopped when Battery Voltage (Vbat) reaches 4.25V- 4.3V. The charging resumes
when Vbat falls below (4.025V - 4.125V).
Under voltage: When the cell voltage drops below 2.242V – 2.358V the cell is disconnected for discha rging.
Charging is still possible.
Current fuse: Finally, if all protection functions are out of order due to abnormal condition, the current fuse protects
the device from explosion and fire with melting. The fuse melts 10A during 1 second.
2.7 Battery Capacity
QN-J7BPS 800mAh, Li-ion
The phone can be charged even during making phone calls.
However, the shortest charging time will be reached when the phone is switched off.
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