Trouble Shooting For Bb Part; Initialization - Nokia RH-109 Service Manual

Trouble Shooting for BB part

Initialization

Check BAT_ID resistance about 40Kohm Check BAT_ID resistance about 40Kohm
•Press Any key •Press Any key
•Regulator Output check •Regulator Output check
•TCXO CLK check •TCXO CLK check
•Sleep X-tal check •Sleep X-tal check
•Memory Ctrl signal check •Memory Ctrl signal check
(if possible) (if possible)
Page 3-12
Check Check
-U1002 and its peripheral:19.2MHz -U1002 and its peripheral:19.2MHz
Check Check
-Y300 : 32.768KHz -Y300 : 32.768KHz
-U100 (Fatal error displayed) -U100 (Fatal error displayed)
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BB Troublesh0oting and Manual Tuning Guide
VPH_PWR Voltage check VPH_PWR Voltage check
Check Check
-VREG_MSMC(C400) : 1.3V -VREG_MSMC(C400) : 1.3V
-VREG_RF(C401) : 2.25V -VREG_RF(C401) : 2.25V
-VREG_MSME(C428) : 1.8V -VREG_MSME(C428) : 1.8V
-VREG_MSMP(C424) : 2.6V -VREG_MSMP(C424) : 2.6V
-VREG_MPLL(C429) : 1.3V -VREG_MPLL(C429) : 1.3V
-VREG_TCXO(C430) : 2.85V -VREG_TCXO(C430) : 2.85V
Check U100 Check U100
Check U100 and U200 Check U100 and U200
-EBI1_MEM_CLK (R204) -EBI1_MEM_CLK (R204)
-EBI1_MEM_CLK_N(R200) -EBI1_MEM_CLK_N(R200)
RH-109
Issue 1