Nokia NHL-2NA Series Troubleshooting Instructions page 146

NHL-2NA
(Continued from previous page)
Extclk
amplitude: 0.6V Measure
to 1.1V. camera clock
Frequency 6.5 over R141
MHz
clock OK?
Yes
I2C signal
amplitude 1.8V
Measure I2C
nominal
Clk and Data
over R134 and
(Change camera
modes to get
I2C traffic)
Both signals
amplitude OK?
Yes
works OK?
CCP signal
amplitude +/-
150mV (300mV)
No
nominal, common
mode voltage
0.9V nominal,
Measure CCP
clock = 26MHz
Clk and Data
over R100 and
(Use viewfinder
mode and
oscillosc. AC
mode for
differential
amplitude, DC
mode for common
Both signals
mode voltage)
amplitude OK?
Page 16
Check R141 and
No
Camera R133, measure
both ends of R133
against GND
R135
No
Replace R134
operate,
and R135
Yes
Another
Replace
camera
camera
R101
No
Replace R100
operate,
and R1101
Yes
Go to UPP
trouble
shooting,
replace UPP
¤Nokia Corporation
CCS Technical Documentation
Clock
exists in
other
end
No clock
signal in
neither end
of R133?
No clock
No
Go to UPP
trouble
OK?
shooting,
replace UPP
Yes
Check camera
operation
No
Go to UPP
trouble
OK?
shooting,
replace UPP
Yes
Check camera
operation
Replace R133
Go to UPP
trouble
shooting,
replace UPP
Issue 1 06/02