Hitachi P50H401 Service Manual page 118

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Yes
Does the CableCard
user menu appear in
the OSD?
No
Check POD Cable
connector
Is connector
Damaged?
No
Check POD
PWB
Check the DC voltage in
the POD board at the
CW03 and CW04
capacitors (+3.3Vdc)
Is voltage OK?
No
Go to the next page...
MPEG Data MPEG Enable, for
oscilloscope's sync
At the CableCard
Diagnostics submenu,
is CableCard Id number
all 0's?
No
Yes
Repair/Replace
POD connector
Check waveform at
RW27 pin no. 1 or 2.
Yes
The CableCard
must be inserted
(see next page)
117
Yes Repair/Replace
Digital Main
POD PWB
Yes
Is the waveform OK?
No
Repair/Replace
POD PWB
Waveform of RW27
pin 1 or 2 in yellow - MPEG data signal.
Pin 3 or 4 In Cyan, MPEG enable signal.
Repair/Replace
Yes
Digital Main