Introduction to Issue 2
This is the updated issue of the RH-53/54 service manual. The sections of the manual that have
been changed are presented in the Amendment record sheet. However, some changes worth
mentioning are:
■
Flash memory
There have been some errors related to the flash memory (D450). When the phone is dead or
jammed, the flash memory is oftentimes the problem. For more information, please refer to the
baseband troubleshooting sections "Phone is dead" or "Phone does not stay on or is jammed".
■
Tuning and calibrating with Phoenix
Some redundant information has been removed from the Manual tuning sections.
Note: always perform auto tuning when possible
!
■
Hardware changes
The following hardware changes of ASICs have been made. The changes will neither have an
effect on functionality nor the values presented in this manual.
•
UPP_8M is used in version 4.3 instead of 2.6/2.10
•
UEMC is used instead of UEMK
■
Schematics
This Issue contains schemas showing both boards with original build and updated build. Board
specific information is marked clearly. These are the board versions:
•
1eja_09a (original)
•
1ejm_02a (updated)
■
Parts
Updated parts lists have been added and product codes have been removed.
Note: For the latest parts lists and for product codes, always refer to the Service bulletins.
