Mitsubishi TRIUM ASTRAL, Руководство по обслуживанию, Страница: 30 / 33

Level 3 Service Manual
GALAXY ASTRAL GEO GEO WAP
Mitsubishi Electric Telecom Europe SA Version E
ZA le Piquet, 35370 Etrelles Date: 04/00
Phone: +33 2 99 75 71 00
Fax: + 33 2 99 75 71 47
29/29
9.
Trouble Shooting help guide
Defects observed Mesure/Investigation Test
report
Component no good
correctives action
CHARGING PROBLEM
Consumption in charge:
begin at 125 mA, red led light up, displayed "Charging", increase between 520 and
580 mA with backlight switch on and decrease between 450 to 500 mA
Charging problem 60 < Ich < 100 mA + no charging display-Vbat=4,8 V
instead of 1,04v with charge cable, without battery xg001 IC100
Charging problem 70 < lch < 76 mA, Vth=2.5 V (j101 pin2) IC100
No charging visual check : connector J103 broken xg003 J103
Charging no good Displayed Charging, consumption at 72mA increase to
155 mA checks TR106,
TR107, R128, R129
Charging no good Displayed Charging, consumption at 123mA increase to 175
mA and decrease to 80mA check the power
BLEV
Charging no good Displayed Charging, consumption at 850mA (Vth=1.1 V
instead of 2.5 V) TR106, TR103,D118
Charging no good Displayed Low Battery, Consumption at 180mA R120, R121, TR104
Charging no good Displayed "TestMode", Consumption at 25mA D125, TR106
Charging no good Displayed Full Battery after few secondes R121, TR106
Charging no good 3.6VB=3.7 V instead of 5 V in charging xg013 D117 (resoldering
only)
AUDIO PROBLEM
Noisy audio Noisy audio during DCS real call but audio good with
DCS tester with speaker no good xg002 IC300
Noisy audio Noisy audio during DCS real call but audio good with
DCS tester with speaker good xg022 IC300
Low audio HSDET voltage no good(not equal to 0v) and J300
already changed xg024 IC300(L3)
Low speaker visual check : C333 missing (0.1 µF) xg010 C333
Low buzzer check audio path R327, R328
No buzzer check audio path TR350, D300,IC300
No speaker check audio path xg005 IC300
No speaker visual check on audio path xg023 J300 (resoldering
only)
LOCATION UPDATE
RX level DCS no good check the RX DCS path : 15 dbm loses instead of 2 in the
SW700 xg006 SW700
No Service DCS Swt 400 kHz no good xg008 adjust each PCL in
DCS band
No Service EGSM check the RX GSM path : LNA output level at -75 instead
of -27 xg009 TR504
No Service EGSM Check the RX path (command on SW700 pin4 no good) xg017 SW700
No Service EGSM & DCS TX good in testmode (TX I/Q and RF) + RSSI good in test
mode (RX I/Q and level)
xg014 IC600