Sony CMD-Z28 User Manual

CMD-Z28

SERVICE MANUAL

Ver 1.0 2001.06

SPECIFICATIONS

Signalling format Dual-Band
Frequency range E-GSM 900 MHz,Transmit:880 – 915 MHz

DCS 1800 MHz, Transmit:1710 – 1785 MHz

GSM power class Class 4 (2W)
DCS power class Class 1 (1W)
SIM chip Pluggable mini SIM card
Display High resolution grey scale full graphics display

Resolution: 96 × 72 pixels
Graphic Icons
5 lines × 12 (normal font numeric) characters

Channel spacing 200 kHz
Number of channels E-GSM: 174

DCS: 374

Frequency stability Transmit frequency drift (synchronized)

< ± 0.1 p.p.m

RF output power GSM: 2W

DCS: 1W

Battery life Standby: 30h – 130h standard battery

Talk time:1h30 – 3h40 standard battery

Power requirements 4.0 V (nominal)
Operating temperature -10°C to +55°C
Accessories operating temperature ±0°C to +45°C
Battery pack charging temperature ±0°C to +40°C
Dimensions 88 mm × 47.5 mm × 22 mm
Weight 82 g
Volume 78 cm

E Model

Receive: 925 – 960 MHz

Receive: 1805 – 1880 MHz

50h – 220h extended battery

2h30 – 6h extended battery

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<Supplied accessories>

• AC Adaptor QN-2TC

• Battery (std.) QN-Z5BPS

• Desk Top Charger QN-Z5DTC

• Hand Strap

• AC Cable

Design and specifications are subject to change
without notice.

TABLE OF CONTENTS

1. GENERAL ................................................................... 3

2. GENERAL DESCRIPTIONS

2-1. Multi-band ....................................................................... 4

2-2. Real Time Clock (RTC) .................................................. 4

2-3. Vibra Functionality ......................................................... 4

2-4. Battery Safety .................................................................. 4

2-5. Battery Capacity .............................................................. 4

2-6. Accessory Interface ......................................................... 5

2-7. RF Antenna Connector/Antenna Switch ........................ 5

2-8. Languages........................................................................ 5

CAUTION

Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instructions.

ADVARSEL!

Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.

Udskiftning må kun ske med batteri

af samme fabrikat og type.

Levér det brugte batteri tilbage til leverandøren.

3. ACCESSORIES

3-1. Travel Charger................................................................. 6

3-2. Desk Top Charger (not for sale by itself) ....................... 6

3-3. Extended Battery (TBD) ................................................. 6

3-4. Standard Battery .............................................................. 6

4. JIGS AND TOOLS ................................................. 7

5. DISASSEMBLY ......................................................... 7

6. INTERFACE TO GSM-TESTER ......................... 9

7. PROGRAMMING INSTRUCTIONS

7-1. Requirement .................................................................... 10

7-2. Hardware Set-up ............................................................. 10

7-3. Software Set-up ............................................................... 10

8. SAVE PERSONAL DATA IN MOBILE......... 11

9. EXPLODED VIEW................................................... 12

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.

VARNING

Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.

VAROITUS

Paristo voi räjähtää, jos se on virheellisesti asennettu.
V aihda paristo ainoastaan laitev almistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

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SECTION 1

GENERAL

3

SECTION 2

GENERAL DESCRIPTIONS

2-1 Multi-band :

CMD-Z28 support E-GSM 900 and DCS 1800 multi-band functionality.

Because the usage of multi-band depends on network capabilities, the phone is able to operate as a single band mobile in GSM 900 as well
as in DCS 1800; In addition, 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 GSM 900 and DCS 1800 bands.

The CMD-Z28 is a phase II, GSM 900 class 4, DCS 1800 class 1 mobile phone.
The nominal maximum output power for GSM 900 is 2 W, for DCS 1800 1 W.

2-2 Real Time Clock (RTC):

The real time clock is integrated into the phone.

When the mobile is switched on the RTC is powered via the CPP.
When the phone is powered down, the RTC is powered from the main battery via it’s own low quiescent current regulator.
When the main battery is low or removed, a back-up battery keeps the clock alive.

After the main battery is removed the RTC keeps the time for 20 days (ability value).

2-3 Vibra Functionality

The vibrator is a 1.3 V device.

A general port pin of the SC1 controls the switch mode of the vibration motor. It is po wered through re gulator by an interface control unit.
If the mobile is in the phase of switching on or off the vibrator is off at all times.

2-4 Battery Safety

The battery pack contains a safety circuitry. 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 (4.24 V - 4.3 V). The charging resumes when Vbat falls below
(4.06 V – 4.15 V).
Under voltage: When the cell voltage drops below (2.5 V – 2.7 V) the cell is disconnected for discharging.
Charging is still possible.

2-5 Battery Capacity:

Standard Battery 620 mAh typical Li-ion QN-Z5BPS
Extended Battery 1000 mAh typical Li-ion QN-Z5BPE (TBD)
The phone can be charged even during making phone calls.
However, the shortest charging time will be reached when the phone is switched off.

As the charging circuit is integrated in the battery pack, the phone cannot be powered up by the charger without the battery pack being
attached.

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