Main camera troubleshooting
Context
The following references on the PWB help in the effective debugging and troubleshooting of the main/
primary camera.
Sr. No
Reference
Description
1
X1400
Primary camera socket
2
R1477, R1478
Pull-up resistors on primary camera I2C lines. Resistor value 4.7
KOHMS.
3
D1400
BCM2727B IC
4
N1515
VCAM_1V8 regulator
5
N1517
VCAM_2V8 regulator
The following test points on the PWB help in the effective debugging and troubleshooting.
Sr. No
Signal name
Measuring point
Description
1
VCAM_1V8
L1515/C1516
1.8V supply to primary camera
2
VCAM_2V8
C1520
2.8V supply to primary camera
3
VDIG_ENABLE
J1515
Enable signal for VCAM_1V8 regulator. This
signal needs to be High for the regulator to
be On.
4
VANA_ENABLE
J1516
Enable signal for VCAM_2V8 regulator. This
signal needs to be High for the regulator to
be On.
5
PRI_CAM_CLK
R1430/C1471
External clock signal to primary camera
6
PRI_CAM_I2C(1:0)
R1477, R1478
I2C signals for primary camera
RM-609
Camera Module Troubleshooting
Issue 1
COMPANY CONFIDENTIAL
Page 5 – 17
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