Service Guide

LTE Standard Module Series
EG91_Series_Hardware_Design
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10. Updated module storage information
(Chapter 8.1).
11. Updated the cooling down slope of reflow
soldering thermal profile;
Added a note to clarify the precautions if a
conformal coating is necessary for the module
(Chapter 8.2).
2.0 2021-07-01
Barret XIONG/
Rex WANG
1. Added the related information of EG91-NAL
in the whole document.
2. Added the note of BOOT_CONFIG (Chapter
3.3&3.7.1)
2.1
2021-07-28
Barret XIONG/
Rex WANG
1. Updated supported USB serial drivers for
Linux (Table 2).
2. Updated EG91-E bottom dimensions (top
view) (Figure 42).
3. Updated EG91-AUX/-EX/-NA/-NAL/-NAX/
-NAXD/-VX bottom dimensions (top view)
(Figure 43).
2021-11-05
Lark YU/
Frank WANG
Added the sub-module of EG91-NAXDL.