Giant Electronics MBO Alpha 28xx, MBO Alpha 27xx, MBO Alpha 26xx Service Manual

Giant Electronics ltd. Service manual for DECT phone rev.: 01
SERVICE MANUAL
(FOR MBO Alpha 26xx / 27xx / 28xx)
PAGE: 1 / 42
Giant Electronics ltd. Service manual for DECT phone rev.: 01
CONTENTS
z MODEL SPECIFICATION -------------------------------------------------- P3 z FEATURES LIST ------------------------------------------------------------- P4 z PRODUCTION TECHNICAL SPECIFICATION -------------- P05 ~ P12 z OPERATION MANUAL ------------------------------------------- P13 ~ P34 z MAIN PARTS DESCRIPTIONS ------------------------------------------ P35 z BASE RF CIRCUIT DIAGRAM ------------------------------------------ P36 z HANDSET RF CIRCUIT DIAGRAM ------------------------------------ P36 z HANDSET PROCESSOR CIRCUIT DIAGRAM ---------------------- P37 z BASE PROCESSOR CIRCUIT DIAGRAM ---------------------------- P38 z BASE LINE INTERFACE CIRCUIT DIAGRAM --------------------- P38 z BASE POWER & LEDS CIRCUIT DIAGRAM ----------------------- P39 z BASE MAIN ASSEMBLY LAYOUT DRAWING -------------------- P40 z HANDSET MAIN ASSEMBLY LAYOUT DRAWING ------------- P41 z BASE & HANDSET RF ASSEMBLY LAYOUT DRAWING ------ P42
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
MODEL SPECIFICATION
GENERAL DESCRIPTION
DECT TDMA: Time Division multiple Access
z
DECT uses 10 frequency bands and time division multiplexing. Each channel
z
has a frame structure. A DECT frame of 10 milliseconds is divided into 2 X 12
timeslots. Therefore one cell can handle up to 120 slots.
LCD display and Hands-free in handset (portable part)
z
SUPPLY POWER
HANDSET : 2X1.2V AAA 600mAhr Ni-MH rechargeable batteries
z
BASE : AC230V DC7V 300mA / AC7V 150mA adaptor
z
POSSIBLE RANGE
OPEN SPACE : UP TO 300 METERS
z
IN BUILDING : UP TO 50 METERS
z
WEIGHT
HANDSET : Less than 120g (with batteries)
z
BASE : 180g
z
SIZE (L x W x H)
HANDSET : 135x50x26
z
BASESET : 115x80x115
z
LIST OF STANDARD ITEMS
Cordless handset (portable part) ------------------------------------- 1 pc
z
Base station (fixed part) ---------------------------------------------- 1 pc
z
Battery pack ……………………………………………………. 1 pc
z
AC adaptor -------------------------------------------------------------- 1 pc
z
Telephone line cord --------------------------------------------------- 1 pc
z
Belt chip for handset …………………………………………… 1 pc
z
Instruction manual, single color ……………………………….. 1 pc
z
Gift box with inner box ………………………………………. 1 pc
z
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
FEATURES LIST
z Digital, cordless, easy to use telephone complying to DECT/GAP standards. z CID function with caller list for 20 numbers or names from phonebook (network-
dependent).
z Alphanumeric LC display. z Exchangeable top covers. z Telephone directory (phonebook) for 40 entries with names and telephone numbers. z Extended redialing for 10 numbers. z Microphone muting function. z Acoustic battery and range warning signals. z 10 incoming call ringing melodies. z Headset connection. z Can be expanded for use with up to 5 mobile handsets. z Operation of a handset on up to 4 base stations. z Paging function from base station to handset. z Programmable call barring. z Key lock. z DTMF, Flash. z Up to 150 hours standby. z Up to 12 hours continuous call time. z Operation via 2 standard batteries, AAA type. ( micro, Ni-MH) z Hands-free calling using the handset.
ANSWERING MACHINE PART
z Fully digital answering machine z Adjustable call acceptance, 2-7 rings z Date and time display for each message ( network-dependent) z Answering machine operati0on via the handset z Remote control option z Security code
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
PRODUCTION TECHNICAL SPECIFICATION
1. 8GHz DECT Telephone
PAGE: 5 / 42
Giant Electronics ltd. Service manual for DECT phone rev.: 01
TECHNICAL SPECIFICATION
ELECTRICAL
PRODUCTION LIMIT
FIX PART PORTABLE PART REMARK
TESTING CONDITIONS
Supply Temperature Humidity
RADIO SECTION
Frequency Range 1880 MHz ~ 1900 MHz 1880 MHz ~ 1900 MHz Number Of Channels 10 10 Channel Frequency RX TX RX TX
Channel 0 1881.792 MHz Channel 1 1883.520 MHz Channel 2 1885.248 MHz Channel 3 1886.976 MHz Channel 4 1888.704 MHz Channel 5 1890.432 MHz Channel 6 1892.160 MHz Channel 7 1893.888 MHz Channel 8 1895.616 MHz
Channel 9 1897.344 MHz Frequency Stability Modulation Method GFSK GFSK Frequency Deviation Maximum positive B-Field part 3 Maximum negative B-Field part 3
NTP Power 20 +6/ -2 dBm 20 +6/ -2 dBm 50 ohm Termination Receiver Sensitivity BER ≤ 0.0001 Jitter
Radio Regulation EN 301 406 EN 301 406
230VAC ± 10%, 50Hz 2.6V ± 0.1V 25 ± 10°C 25 ± 10°C 65 ± 20% 65 ± 20%
fc ± 65kHz fc ± 65kHz @20 ± 10°C
+203 / +403 KHz +203 / +403 KHz @CMD60
-403 / -203 KHz -403 / -203 KHz @CMD60
-88 dBm 0 ± 1µs0 0 ± 100ns 0 ± 100 ns
-88 dBm
±
1 µs
unless otherwise stated unless otherwise stated unless otherwise stated
Slot - Slot Bit - Bit
LINE INTERFACE
DTMF SIGNALING
DTMF Freq. Tolerance:
697Hz 770Hz 852Hz 941Hz 1209Hz 1336Hz 1477Hz
Tone Level: Low Group
High Group
Twist (HG > LG)
< ± 1.5% < ± 1.5% < ± 1.5% < ± 1.5% < ± 1.5% < ± 1.5% < ± 1.5%
-13.0 ∼ -8.5 dBV
-11.0 ∼ -6.5 dBV 1 ∼ 4.5 dB
PAGE: 6 / 42
X Low Group, Row 1,2,3 X Low Group, Row 4,5,6 X Low Group, Row 7,8,9 X X X High Group, Col 2,5,8,0 X High Group, Col 3,6,9,# X X X
Low Group, Row ∗,0,# High Group, Col 1,4,7,
Giant Electronics ltd. Service manual for DECT phone rev.: 01
S
PRODUCTION LIMIT
FIX PART PORTABLE PART REMARK
Tone Dial Digit Period, Td Inter-digit Period, Tid Mute Level Unwanted Freq. Component Pulse Dial Signaling See Table 1 Country specific Flash Duration See Table 1 X Country specific Maximum Ringer Stop Voltage X Minimum Ringer Start Voltage X Ringer Impedance @25Hz / 50Hz On Hook DC Resistance
@100Vdc T/R-Earth On Hook DC Resistance @100Vdc T-R Off Hook DC Characteristics See Table 2 and Figure1 X I-CTR 37 On Hook AC Impedance @ 300~3400Hz, 20mA, 50Vdc Off Hook AC Impedance Leakage Current between Simplexed Tips & Ring to Charge Contacts Line Interface Regulation EN 300 001, I-CTR 37,
65 ∼ 90 ms
65 ms
20 dB
<
20 dB
>
4 k ohm
10M
1M
>
10k
270 + (750 ⁄⁄ 150nF)
3.5mA @1kVrms
for 1sec.
CTR 38
X X XI-CTR 37
X XI-CTR 37
XI-CTR 37
X EN 300 001 4.1.1 XI-CTR 37
X
PULSE DIAL SIGNALING
Flash(Address 0X1CF)
Table 1- Country Specific: Pulse Dial Signaling and Flash Duration
C180x
peed
Make Break
Pre-pulse 20ms Post-pulse 20ms
Break Duration
10±1pps
60±4ms
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
Point Voltage (V) Current (mA)
A9,0 0 B 9,0 20,0 C 14,5 42,0 D 40,0 50,0 E 40,0 60,0 F 0 60,0
NOTE: Limits for intermediate currents can be found by drawing a straight line between the break points on a linear voltage/current scale.
G0 0
Table 2 - TE Voltage/Current Characteristics
U(V)
40
14,5
D
C
9,0
A B
G
0
0204260
F
50
Figure 1: TE voltage/current characteristics
E
Not to scale
I (mA)
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
PRODUCTION LIMIT
FIX PART PORTABLE PART REMARK
ACOUSTIC RESPONSE
SLR (Sending Loudness Rating) TBR10 @ 2800 ~ 1000 ohm +/- 4dB X Refer to acoustic sample @ 500 ohm +/- 4dB X Refer to acoustic sample Sending Response See Figure 2 and Table 3 X CTR 38 Sending Distortion CTR 38 @1KHz,-4.7dBPa < 7% X @500Hz,-4.7dBPa < 7% X @1KHz, +5dBPa < 10% X RLR (Receiving Loudness Rating) @ 2800 ~ 1000 ohm X +/- 4dB PP@volume 3 Refer to acoustic sample @ 500 ohm X +/- 4dB PP@volume 3 Refer to acoustic sample Receiving Response See Figure 3 and Table 4 X CTR 38 Receiving Distortion CTR 38 @1KHz,-12dBV X < 7% @500Hz,-12dBV X < 7% @1KHz, 0dBV X < 7% STMR X > 10 dB Sending Noise X Receiving Noise X Return Loss – Impedance @200∼300 Hz @300∼4000 Hz Echo Return Loss @300∼3400Hz
Receiver Volume: Hi/Normal X Acoustic Reference CTR 38
>
6 dB
>
8 dB
>
14 dB
XI-CTR 37 X XCTR 38
X 500 ~ 2500 Hz
6 dB
2×1400
2×1400
2×800 CTR 38
2×1400
2×1400
2×800 2×500Ω, Zr
PAGE: 9 / 42
Giant Electronics ltd. Service manual for DECT phone rev.: 01
Frequency (Hz) dB relative to arbitrary level
Upper limit 100 -6
2000 +7 4000 +7 8000 -13
Lower limit 300 -14
2000 -6 3400 -11
Table 3 - Co-ordinates of Sending Sensitivity Limit Curves
Co-ordination of Sending Sensitivity
Limit Curves
10
5 0
-5
zero
-10
-15
-20
Sensitivity dB relative arbitrary
100 1000 10000
Figure 2: Co-ordination of Sending Sensitivity Limit Curves
Frequency (Hz)
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
Frequency (Hz) dB relative to arbitrary level
Upper limit 100 -10
200 +2 4000 +2 8000 -15
Lower limit 300 -9
1000 -7 3400 -12
Table 4 - Co-ordinates of Receiving Sensitivity Limit Curves
C o -or d inate s of Rec eiv ing
S e n sitiv it y L imit C urve s
5 0
-5
zero
-10
-15
Sensitivity dB relative aebitrary
-20 100 1000 10000
Figure 3: Co-ordinates of Receiving Sensitivity Limit Curves
Frequency (Hz)
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Giant Electronics ltd. Service manual for DECT phone rev.: 01
PRODUCTION LIMIT
FIX PART PORTABLE PART REMARK
OFF-LINE CID DATA TRANSMISSION (ETS 300 778-1)
Freq. and Baud Rate Space Freq. Mark Freq. Baud Rate Mark Level Detection Range -8 dBV ~ –36 dBV X Space Level Detection range -8 dBV ~ –36 dBV SNR Immunity @300~3400Hz 25 dB X
Transmission Prior to ringing – TE Alerting Signals DT-AS: Nom. Frequency
Signal Frequency Twist Duration Unwanted Signal Immunity (300 3400 Hz) RP-AS: Ringing Voltage Nom. Frequency 25 Hz and/or 50 Hz X Duration
Transmission During Ringing First Ring Pattern Ringing Voltage
Nom. Frequency 25 Hz and/or 50 Hz Duration Channel Seizure Detection Length Mark Signal Detection Range
2100 ± 32 Hz 1300 ± 20 Hz 1200 ± 12 baud
2130 ± 11 Hz 2750 ± 14 Hz
-9 -40 dBV / tone ± 6 dBV 100 ± 10 ms 25 dB X
30 V 90 VRms
200 450 ms
30 V 90 VRms
350 1200 ms 96 ~ 300 bits X
180 ± 25 bits and / or 80 ± 25 bits
X X X
ETS 300778-1 4.2.1.1 &
4.2.3
X
X X X
X
X Extended
Recommendation ETS 300778-1 4.2.1.2
X
ON-LINE CID DATA TRANSMISSION (ETS 300 778-2)
Freq. and Baud Rate Space Mark Baud Rate Mark Level Detection Range Space Level Detection range SNR Immunity @ Frequency 300 3400 Hz
DT-AS Nom. Frequency
DT-AS Detection Level DT-AS Detection Duration DT-AS Twist DTMF Acknowledge
TE-ACK)
Freq. Tolerance: 941 Hz 1.5% X
1163Hz 1.5% X Tone Level: Low Grp@20mA Tone Level: High Grp@20mA Duration Response Time
Mark Signal Detection Length
2100 ± 32 Hz 1300 ± 20 Hz 1200 ± 12 baud
-10 -33 dBV
-10 -33 dBV 25 dB X
2130 ± 11 Hz 2750 ± 14 Hz
-10 -35 dBV / tone 80 ± 5 ms ± 6 dB DTMF-D X
-8.5 -13 dBV
-6.5 -11.0 dBV 65 ms 90 ms
< 85 ms 80 bits ± 25 bits
X X X X X
X
X
XI-CTR 37 XI-CTR 37 X
X Between end of DT-AS
and start of TE-ACK
X
PAGE: 12 / 42
Giant Electronics ltd. Service manual for DECT phone rev.: 01
OPERATION MANUAL
1. Making External Calls
Charge the battery:
Before you can use your new phone, you need to charge the battery.
Put the supplied rechargeable batteries into the handset battery compartment and make sure
it is in the right polarity.
Place the handset on the charge cradle of the base unit.
The charge indicator
The charge strength icon
Charge the battery overnight for the first time.
To make a call:
on the base unit will light.
on the handset display will scroll.
Press
The base in-use indicator
Dial the number you require.
To end a call:
Press
Pre-dialing:
To make a call:
Dial the number you require.
To delete an incorrectly entered digit by pressing
Press
The phone will connect the line and dial the number you required.
To end a call:
Press
To insert Pause for PBX system:
and wait for dialing tone.
will be turned on.
.
.
.
.
When you press and hold the digit, a Pause of 3 seconds will be added after the digit. A “P” will be shown on the display.
2. Making Internal Calls
There should be more than one handset registered to a single base in order to make internal calls.
To make a call:
Press
Press the registered handset number you wish to dial.
.
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