Mitsubishi Trium Cosmo Service Manual
LEVEL 3 SERVICE
FA9M0476
COSMO (DUAL BAND)
R V A : Création D.JUET 04/00 Rédigé par Verifié par Approuvé par
E E
V R
I S
S I
I O
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Mitsubishi Electric Telecom Europe S.A. Version A
ZA le Piquet, 35370 Etrelles Date: 04/00
Phone: +33 2 99 75 71 00
Fax: +33 2 99 75 71 47
Written by Checked by Approuved by
D.JUET BT.LEGORGEU G. LEBASTARD
Level 3 Service Manual
COSMO
TABLE OF CONTENTS
1. FUNCTIONAL DESCRIPTION ............................................................................................................1
1.A BLOCK DIAGRAM ...............................................................................................................................1
1.B DESCRIPTION OF BLOCK DIAGRAM......................................................................................................1
1.b.1 IC 300 One-C (vWS22100). ....................................................................................................... 1
1.b.2 IC100 IPD (Rohm BH6070KUT)................................................................................................ 1
1.b.3 IC600 RF-IC (Hitachi HD155121FEB). .................................................................................... 1
1.b.4 IC601 PLLs & VCOs.................................................................................................................. 1
1.b.5 Memory system..........................................................................................................................1
1.b.6 System Clock. ............................................................................................................................ 2
2. BATTERY MANAGEMENT.................................................................................................................2
2.A BLOCK DIAGRAM ............................................................................................................................... 2
2.B DESCRIPTION. .................................................................................................................................... 2
2.C CHARGING PROCESS. .......................................................................................................................... 3
2.D MAIN CHARACTERISTICS..................................................................................................................... 4
2.E AUTONOMY CONTROL........................................................................................................................ 4
2.F POWER ON. ........................................................................................................................................ 5
2.f.1 POWER-Key is pressed (see a ):................................................................................................... 5
2.f.2 TESTPS is connected (see b): ........................................................................................................ 5
2.f.3 An EXPS accessory is connected (see c):....................................................................................... 5
2.f.4 RTC alarm interrupt:..................................................................................................................... 5
2.G POWER OFF........................................................................................................................................ 7
2.H REAL TIME CLOCK ............................................................................................................................. 7
3. RF SECTION..........................................................................................................................................8
3.A FREQUENCY RANGE............................................................................................................................ 8
3.a.1 E-GSM Frequency :....................................................................................................................... 8
3.a.2 DCS Frequency : ........................................................................................................................... 8
3.B SYNTHESISER CIRCUIT DESCRIPTION................................................................................................. 10
3.C RF BLOCK DIAGRAM....................................................................................................................... 11
3.c.1 Reception Block Diagram. ........................................................................................................... 12
3.c.2 Transmission Block Diagram. ...................................................................................................... 13
3.c.3 Output power control................................................................................................................... 14
4. SPEECH CODER................................................................................................................................. 15
4.A FEATURES........................................................................................................................................ 15
4.B FULL RATE / HALF RATE / ENHANCED FULL RATE............................................................................... 15
5. ANALOGUE AUDIO. .......................................................................................................................... 17
5.A BUZZER. .......................................................................................................................................... 17
5.B SPEAKER (RX AUDIO)....................................................................................................................... 17
5.C MICRO (TX AUDIO).......................................................................................................................... 17
6. TESTMODE SOFTWARE ................................................................................................................... 18
6.A EQUIPMENT INSTALLATION............................................................................................................... 18
6.B SOFTWARE (MTS) INSTALLATION..................................................................................................... 19
6.b.1 Simple Setup :.......................................................................................................................... 19
6.b.2 Complete Setup : ..................................................................................................................... 19
6.C SOFTWARE (MTS) DESCRIPTION ....................................................................................................... 20
6.D ENTER IN TEST MODE:....................................................................................................................... 21
6.E POWER ADJUSTMENTS ...................................................................................................................... 22
6.F RECEIVE ADJUSTMENTS .................................................................................................................... 23
7. BASIC ADJUSTMENT. ....................................................................................................................... 26
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Level 3 Service Manual
COSMO
7.A POWER ADJUSTMENT. ...................................................................................................................... 26
7.B RSSI CONTROL. ............................................................................................................................... 29
8. SOFTWARE VERSION ...................................................................................................................... 29
Version A Mitsubishi Electric Telecom Europe S.A.
Date: 04/00 ZA le Piquet 35370 Etrelles
Phone: +33 2 99 75 71 00
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Level 3 Service Manual
COSMO
1. FUNCTIONAL DESCRIPTION
1.a Block Diagram
HPA
IC701
Serial FLASH
IC206
TX RX
SW700
RFIC
IC600
serial
LCD
FLASH
IC200
ONE-C
IC300
parallel
RAM
IC201
Row/Col
KEYBOARD
BACKLIGHT
LEDS
LCD
MODULE
reset
RFBB Board
IPD
IC100
1.b Description of Block Diagram
1.b.1 IC 300 One-C (vWS22100).
IC300 includes in one chipset Base Band part, DSP, CPU, A/D, D/A converters, TDMA frame
counters, a TX GMSK modulator, a TX power ramping circuit, RX filters. IC300 carries out the
management of the battery charging and of the audio part. It interfaces with the radio frequency part.
1.b.2 IC100 IPD (Rohm BH6070KUT).
IC100 provides the different powers supplies to RFBB board : 2.8VRTC, PSTCXO, 2.8VANA,
2.8VAUD, 2.8VD, 2.8VP, 5VSIM. It actives all L.E.D.s (red,green,LCD & keyboard) and the vibrator
inside the battery. The management of the battery charging is carried out by internal circuit of IC100.
1.b.3 IC600 RF-IC (Hitachi HD155121FEB).
Transceiver IC for E-GSM and DCS Dual Band cellular systems.
1.b.4 IC601 PLLs & VCOs
IC601 includes in one chipset 2 PLL, RF VCO and IF VCO.
1.b.5 Memory system.
IC200 : Flash ROM ( 1 M x 16 Bits ) stores the CPU program code
IC201 : RAM ( 128 k x 16 Bits ) stores data for the CPU work.
IC206 : Serial FLASH ( 2 M x 8 Bits) stores the user’s datas and hardware adjustment datas.
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Level 3 Service Manual
Li-Ion
COSMO
1.b.6 System Clock.
The system clock for the telephone is 13 MHz TCXO, generated by X600. It is processed in IC300 to
provide serial clock for LCD, serial FLASH and IC100. The clock is buffered in IC300 One-C, and
then fed to IC100 IPD as “ CPU CLK ” . It is available on pin 56 of IC100.
During Stand-By mode, the system clock is not managed from X600 TCXO but from X300 ( “ slow
clock ” at 32.768 kHz).
2. Battery management
2.a Block Diagram
6.5 V nominal
EXPS:
AC/DC
CLA
DTC
HF kit
TH
Thermistor
IPD
Charger
IC 100
I charge
3.7V
Green led
Red led
nominal
CHGERR
SPI interface
IPD
Regulators
IC100
Base Band
540 mAh
+
BLEV
CRLEV
BVADJ
BYPASS
BAT_SEL
TH
regulators
GPIO9
AUX_IN0
AUX_IN 2
AGC _ P
One-C
AUX_IN2
RADIO
GPIO10
Constant current :
1C : 350 mA
1/8C : 45 mA
1/20C : 17 mA
CV (adp) : 400 mA
2.b Description.
The battery is Li-Ion 540 mAh, 3.7 V nominal for Cosmo
External power supply for charging (EXPS) comes from the I/O connector at the bottom side of the
mobile (AC/DC, CLA, DTC or H/F Kit). This power supply is 6.5 V nominal. Battery presence and
battery type information are accessible in CHGM IPD register (IC100).
The battery temperature information (TH) implanted on PCB are given by threshold in IPD CHGM
register (IC100). These information is used only for charge control.
The battery level information are accessible in an A/D converter in One-C. It is also available in
CHGM IPD register (IC100), these information are given by range only for range control.
By checking CHG IPD register (IC100) , we know if EXPS is present. As described in the drawing
above, the power supply for Base Band (IC300) comes from EXPS. When EXPS is present because
EXPS level (6.5 V/ 400 mA) is always greater than battery voltage. Power supply for the radio always
comes from the battery.
The serial diode between battery and One-C (IC300) can be bypassed by software to reduce voltage
headroom. Bypass is Activated when battery is less than 3.45 V.
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Rapid charge
COSMO
2.c Charging process.
Charging process follows these successive phases :
Pre charge:
This phase is mandatory before the rapid charge to verify that battery operation is normal (normal
battery voltage and temperature). Charge current during this phase is 45 mA (1/8 C). If the battery
voltage is less than 3.3 V the S/W starts. IPD charger in rapid charge but only if the ambient
temperature is not between 0°C and 55°C.
Rapid charge:
Charge current during this phase is 350 mA. If battery temperature becomes abnormal IPD charger
change to a low current charge 17 mA (1/20 C), while temperature comes back normal (between 0°C
and +55°C) during 15mn. Full charge detection ends Rapid charge. Full charge is detected by S/W
when charge current falls below than 50mA (full charge convergence current)
Full charge
This phase shows that the battery is fully charged by LED Green or LCD Full charge is automatically
stopped after 24 hours duration.
U battery
4.35 V Limit
4.2 V
Restart =Full charge voltage – 0.3 V
3.3 V min
Time
I charge
350 mA
51 mA
45 mA
Full charge convergence current
Time
Timer limit
(240 mn)
Precharge
Rapid
charge
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Level 3 Service Manual
100%
0%
COSMO
2.d Main characteristics.
The phone transmits only if the battery is attached to it, in any configuration of power supply. When
the phone is connected to H/F adapter, DTC, AC/DC, or CLA, the battery charging circuit operates.
Battery voltage (+3.7 V) is applied via TR103 or from TESTPS ( J103 pin3 ) through D124 when
using Hand Free. The main power supply is fed to the phone either from the attached battery via :
• The connector J101, or from accessories :
• H/F adapter,
• Desk Top Charger DTC,
• AC/DC adapter and CLA via the external connector J103.
R120 and R121 give an internal voltage reference Blev =(R121/R121+R120)*(Vbat-Vce). If the
battery voltage VBAT falls, then BYPASS short out the TR103 to reduce voltage drop.
2.e Autonomy Control.
The battery energy is displayed on the LCD by 3 bars . Voltage thresholds for each bar are calculated
to have the autonomy time shared out:
battery icon
1 bar
97%
0 bar
40%
3 bars
Sharing this time by 3 equals wide -is not possible because of the very stable battery voltage level
between 20 % to 50 % autonomy time. In addition with these bars, a ”low battery alarm” is displayed
when blinks 3 bars empty.
All these thresholds are programmed in Serial FLASH by the factory and given in following thresholds
table.
Idle Mode Call Mode
Initial thresholds Battery level Battery level
3 bars → 2 bars
2 bars → 1 bars
1 bar → 0 bar
Power off 3.35 V 3.20 V
Thresholds are different according to the mode, Idle mode or Call mode. Idle mode threshold are
checked by software 25 min after the end of the call.
3.85 V 3.75 V
3.70 V 3.60 V
3.45 V 3.30 V
2 bars
80%
When battery voltage is less than 3.35 V (BAT_EMPTY level saved in serial flash is true).
The mobile is then powered off by BBPWR fall edge
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Level 3 Service Manual
One-C
2.8VD
RTCVCC
EN
Reg8
Power supply
COSMO
2.f Power on.
The mobile can be powered on within 4 different events:
IPD
Reg4
Battery
TESTPS
IC300
EXPS
OR
RTC
BBPWR
2.f.1 POWER-Key is pressed (see a ):
One-C power supply (2.8VD) is switched on.
SW checks if POWER-key (Row[0],Col[2]) is still pressed about 500 ms later.
Then SW activates BBPWR output to maintain One-C power supply, POWER-Key can be then
released.
SW starts the appropriate boot.(power on)
2.f.2 TESTPS is connected (see b):
One-C power supply (2.8VD) is switched on.
SW activates BBPWR output to maintain One-C power supply even if TESTPS is removed.
SW starts the appropriate boot. (“Mitsubishi M4 test mode” displayed)
2.f.3 An EXPS accessory is connected (see c):
One-C power supply (2.8VD) is switched on.
SW activates BBPWR output to maintain One-C power supply even if EXPS is removed.
SW starts the appropriate boot (“charging” displayed)
PWR Key
Control signal
2.f.4 RTC alarm interrupt:
BBPWR output is activated by RTC module.
One-C power supply (2.8VD) is switched on.
SW starts the appropriate boot.(“low battery” displayed)
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a) With battery
PWRKEY
t
BBPWR
IC300 pin L8
t
MUPSU
IC100 pin49
t
Level 3 Service Manual
COSMO
During these mode TESTPS and EXPS equal low voltage level.
A high voltage level on MUPSU implies regulators REG 4, REG 6, REG 7, REG 8 are active.
b) With Interface and I/O connector (Testmode) :
TESTPS
J103 pin3
to t
t0= connexion I/O cable
When you connect I/O connector, MUPSU and BBPWR signals have the same waveform at
TESTPS.
During this condition PWRKEY and EXPS equal low voltage level.
c) With AC/DC Charger, Cigar Light Adapter and DeskTop Charger.
EXPS
J103 pin 2
t0
t0= connection by external power.
When you connect an accessory, MUPSU and BBPWR signals have the same waveform that
TESTPS.
During this condition PWRKEY and TESTPS equal low voltage level
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2.g Power off.
PWRKEY
t
1s
BBPWR
MUPSU
t
5s
SW checks if POWER-key (Row[0],Col[2]) is pressed during 1second
Then after 5 s, SW disactivates BBPWR output to switch One-C power supply off, then POWER-Key
can be released.
2.h Real Time Clock
Real time clock is in ONE C (IC300) and energy is provided:
By IC100 (pin 48) via D105, when the main battery is connected.
By BT100 (back up battery) via D105, when the main battery is empty or not connected
IC300
D105 C305
BT100
VDD_RTCVCC
IC100
REG80
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