Tx Failure - Nokia 7110 Manual

Service & Analysis Center Europe
SACE AMS Training Group

TX FAILURE

GSM 900 faulty
Check 116 MHz at
N700, pin 44/45
Check 116 MHz at N600, pin
25/26
C h e c k U H F 2 0 3 6 M H z
at N600, pin 4
Check PA_GSM
(902MHz) at
N600,pin22
Check
PA_GSM(902MHz) at
N500,pin1
Check PA_GSM at
N500,pin4
Check PA_GSM at L500,
Z500/503, X500/501
C h a n g e Z 5 0 4
Check/change
a) N600, b) N100 (pin24)
if notOK, MAD faulty
Repairhints_nse5_002508
Check 13MHz RFCLK at N700,
pin15 (+/-50Hz). Change if
Check VHF 464MHz at
O K
notOK
O K
O K
n o t O K Check/change G700
O K
notOK
O K
Check Z601 (in/out)
notOK
O K
Check Z603,N502,Z502
n o t O K
O K
Check at N500/501,pin2:
CTL_GSM=0,7-1,7Vpp
CTL_PCN=0,12-0,2Vpp
( squarewave, depends on PWR-level )
Check VC at Z504
YES
(0,9VDC squarewave)
Check at N503: a).BAND_SEL
n o t O K
(lowlevel)on pin2, b).VTX
CONFIDENTIAL
NSE-5
Repairhints
30.07.2000
faulty.
O K
n o t O K
N700, pin 8
OK
n o t O K
Change N700
Check Z702
notOK
notOK
C h a n g e N 6 0 0 notOK
n o t O K
n o t O K
O K
n o t O K
(2.8Vpulsed)on pin 1
Checked by:
AMS TRAINING GROUP
Version 1.0 Approved
GSM1800 faulty
C h a n g e G 7 0 2
Check 232MHz at
N700,pin 46
O K
Check 232Mhz at
N600,pin 35/37
O K
Check UHF 1979,8MHz
at N600,pin4
O K
Check PA_PCN
(1747,8MHz)at
N600,pin 40
O K
Check PA_PCN at
N501,pin1
O K
Check PA_PCN at
N501,pin4
O K
Check PA_PCN at
Z504-Ant-conn.
n o t O K
Check/change L503
Check PA_PCN at Z503,
X500/501
Approved by:
SACE
21 (30)