Service Tools; Product Specific Tools - Nokia N900 Service Manual

RX-51
Service Tools and Service Concepts

Service tools

Product specific tools

The table below gives a short overview of service devices that can be used for testing, error analysis, and
repair of product RX-51. For the correct use of the service devices, and the best effort of workbench setup,
please refer to various concepts.
Issue 1
FS-94
Flash adapter FS-94 is used for phone testing and flashing. FS-94 is
used with the generic flash adapter base SS-60/62 and control unit
CU-4 or interface adapter SS-46.
When flashing or system testing the phone, the adapter is attached to
replace the phone own battery.
All functions (as well as the calibration voltages, current and the
protections for over voltages, over current and voltage polarity), are
performed by CU-4.
Flash adapter FS-94 main features:
• VBATT supply interface
• USB / FBUS multiplexed interface to the phone
MJ-174
MJ-174 can be used for flashing as well as for RF, battery and system
testing.
MJ-174 main functions:
• CU-4 interface adapter to phone
• FBUS interface to phone
• UI Interface to phone
• WCDMA and GSM RF-interface
All functions are performed in CU-4 e.g. calibration voltages and
currents both all protections (over current, over voltage and voltage
polarity).
MJ-174 contains following interfaces to phone:
• VBATT interface
• UI interface containing Display connector
• WCDMA and GSM RF interfaces
• Bluetooth RF interface
• Earpiece interface
• IHF speaker interface
• Microphone interface
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Flash adapter
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