Panasonic EB-X700, Руководство по обслуживанию

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FAULT FINDING
PMCE041201C8 Section 8 Provisional Issue
Service Manual – 5 – Revision 1
8.2. Baseband Fault Analysis
8.2.1 Major Power-on Fault Analysis
On the X700 handset, major power-on fault is defined as the failure of powering up the phone from the major hardware
components or software code such as 26MHz system clock failure, S/M power failure, S-GOLD failure, and S-GOLD code
corruption. Use the flow chart below to identify possible faults that could be attributed to a BGA device. Fault Codes should be
debugged sequentially. The measurements shown below are by FET probe on non-50
Ω
tracks, therefore signal levels are
approximate.
Figure 8.9: Major Power-on Fault Analysis Chart
Run DWD Serial Flash download
tool for S-GOLD.
FLASH (U102)
suspect.
Refer to 'Partial Power-On
Fault Analysis' table.
NO
YES
NO
YES
NO
NO
YES
Refer to Fault Codes A, B, C, D, E.
Repair and re-power phone.
Does the
phone start
downloading?
Was the
software download
successful?
NO
Does the
phone work in-call?
YES
YES
Good phone.
Check RF.
Has the
phone been
calibrated?
NO
YES
NO
START
Does the
phone power on ?
Is the
phone in a partial
power-up
condition?
Attempt to power on the
phone.
Software downloads
to S-GOLD.
Perform Calibration procedures.
YES
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