Dc Distribution (V3_2.775V/Pwm2_1.8V) Test - Motorola MTH500 Service Manual

68P02963C70-O

DC Distribution (V3_2.775V/PWM2_1.8V) Test

Use this test on a unit with the following symptoms: no V3_2.775V, no PWM2_1.8V.
Check C609, C658, C659
for 2.7 Vdc
(V3_2.775 V)
Is the voltage OK?
Yes
Check C624
for 1.88 Vdc
(PWM2_1.8V)
Is the voltage OK?
Yes
Check E401 ferrite
beads by REDCAP2
for opens
Refer to the
No
DC distribution (V2_2.775 V)
Test flowchart
Refer to the
No
DC distribution (V2_2.775 V)
Test flowchart
Troubleshooting
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