General Devices - Nokia 300 Service Manual

General devices

The table below gives a short overview of service devices that can be used for testing, error analysis, and
repair of product RM-781. For the correct use of the service devices, and the best effort of workbench setup,
please refer to various concepts.
Page 2 – 6
SD-63
SD-63 is designed to support mass SW flashing which enables local
mode while connecting the phone.
SD-82
SD-82 is designed to support mass SW flashing which enables local
mode while connecting the phone.
SS-227
SS-227 is designed for regional Central Services to be able to use CU-4
with MJ-300 module jig. With SS-227, CU-4 can be used for battery
testing.
The main functions of SS-227 are:
• CU-4 interface adapter to MJ-300
• BSI mode selector (Lynx and Tabby mode selection)
• VBATT interface
All functions are performed in the CU-4. Calibration voltages and
currents e.g. are protected and monitored by the CU-4 interface
software (protection for over-current, overvoltage and reverse
voltage).
COMPANY CONFIDENTIAL
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Service Devices and Service Concepts
Dummy battery
Dummy battery
Interface for CU-4
control unit
RM-781
Issue 1