Nokia n81 Service Manual page 26

Page 2 –6
MJ-114
The module jig offers engine module component level repair, analysis
and alignment capabilities in combination with CU-4.
Features:
• connection interfaces for GSM, WCDMA, Bluetooth and WLAN
antenna
• galvanic connection to engine module test pads
• multiplexing between USB an FBUS media, controlled by VUSB with
CU-4
• lid interconnection with test points for measurements
• connection to lid assembly incl. displays and earpiece
• connector for e.g. CU-4 control unit
• connection for BT / SIM / SD-card module
Note: There is one RF connection for GSM and WCDMA 2100
Tx (transmitter path) and one RF connection for WCDMA 2100
Rx (receiver path).
•
Band (mid.
ch.)
850 TX
850 RX
900 TX
900 RX
1800 TX
1800 RX
1900 TX
1900 RX
WCDMA TX
WCDMA RX
RJ-130
RJ-130 is a jig to support component level exchange with soldering
machines for the engine module.
COMPANY CONFIDENTIAL
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Service Tools and Service Concepts
Module jig
Table 1 MJ-114 attenuation table
Channel Frequency
/MHz
189 836,6
189 881,6
37 897,4
37 942,4
700 1747,8
700 1842,8
661 1880
661 1910
9750 1950
10700 2140
Soldering jig
RM-179; RM-223
Attenuation
Loss / dB
0,32
0,3
0,27
0,32
0,33
0,4
0,35
0,4
0,4
0,4
Issue 1