Motorola i897 - Chapter 3; Troubleshooting; Digital Analysis Test

TROUBLESHOOTING: Digital Analysis Test
Chapter 3
TROUBLESHOOTING
3.1 Digital Analysis Test
Check supplies on board.
Refer Power-Up & DC
Distribution Tests
Check baseband clocks,
CKIL (probe TP) & CKIH
(probe C735_DNP)
CKIL = 32kHz?
CKIH = 16.8MHz?
Check Roadrunner
IC, U700B7 & 32kHz
crystal, Y700
Disconnect power supply.
Connect flash cable to PC.
Comm Check with XFlash
Comm Check
Pass?
Re-flash software
Proceed to
USB test
Flashing
complete?
Power-up phone
Replace memory
IC, U806
Power-up
successful?
Zeus & Memory
are working
Check Zeus IC,
U804
Yes
Yes
Yes
Yes
No
No
No
No
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