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MODEL: WD-Y57 / WD-Y65 / WD-57732 / WD-65732 / WD-73732
Cable
Air
in
Cable providers send QAM64 and/or QAM256 through
the coax cable to the TV's tuner. Once converted to IF it is
demodulated to an MPEG transport stream (TS). If a card is
present in the PCMCIA slot the TS will be passed to the card
and returned back to IC8506 and then finally sent to the Xilleon
processor. If there is no card present in the card slot and the
tuner is tuned to a QAM channel the TS will pass directly from
the POD interface IC directly to the Xilleon for processing.
SYMPTOM
No channel map appears when pressing
1
guide button (TVGuide disabled)
Channel map does not change after card
2
is installed. (still showing basic cable
map)
3 Host ID screen does not appear
Error code received on screen. Error
4
codes are listed such as 161-x
Individual channel cannot be received.
5
(example HBOHD is no video and no
audio but other HBO channels are OK)
Certain tier of channels is not received.
6
(example: Premium channels or all HD
channels not received)
Unable to tune to a channel. (example:
Pressing 1055 has no response and
7
stays on current channel)
When using SA card channels changing
automatically and random message
8
about upgrade in process. (Channels are
often like 10,000 to 50,000)
Periodically encrypted channels become
9
unavailable.
Only Analog channels can be viewed. All
10
digital/encrypted channels are
unavailable
ChannelView does not list program
11
content or channel call letters
CableCARD
Main Tuner (TU-100)
(Cable/ATSC/NTSC)
DEMODULATOR
IC1500
OOB Tuner (TU-101 )
SIGNAL-PWB
POSSIBLE CAUSE(S)
Cable is not connected to ANT1 -or-
OOB data is not received correctly
CableCARD is not 'Initialized' within
the service providers system.
Signal and information not received by
TV
Communication between TV and card
is lost or disrupted
The TV has no means to block
individual channels. Proper
authorization is not received.
Authorizations to display scrambled
channels are sent via OOB data.
1055 is not available in the channel
map. Channel map is sent via OOB
from the service provider.
CableCARD firmware is out of date
and being upgraded by service
provider.
Card is hung
Proper authorization is not received or
TV cannot display digital video
This information is provided in the
form of OOB data tables and is sent at
the discretion of the service provider
Page 30
To Engine
Data Bus
XILLEON
IC8001
Data
TS &
Bus
Data
POD I/F
IC8506
TS &
Data
DM-PWB
Cable providers typically have both encrypted
and non-encrypted channels. If the Xilleon receives an
encrypted TS it will ask the CableCARD to unscramble
the stream. The card will only unscramble the TS if it
receives the proper authorizations to do so. Those
authorizations are received via Out-of-Band data (OOB).
The OOB contains information about authorizations,
channel maps and more.
POSSIBLE RESOLUTIONS
1) Verify cable is connected to ANT1
2) Re-install/Replace CableCARD
3) Verify signal level and signal noise level
4) Contact Service Provider
5) Check TU101 for proper function/Replace Signal PWB
Contact service provider
1) Verify cable is connected to ANT1
2) Re-install CableCARD
3) Replace CableCARD
4) Verify signal level and signal noise level
1) Pull card from TV and wait 5 minutes. Then reinstall the
card and verify it is initializing properly.
2) Press INPUT & FORMAT keys on the front panel.
3) Replace CableCARD with new card
4) Try 3rd CableCARD
5) Replace DM-PWB
Contact service provider
Contact service provider
Verify OOB is locked. If OOB is locked, verify channel
should be received. If not locked, troubleshoot for OOB
failure on SIGNAL PWB and/or with service provider.
If this process continues more than 60 minutes, contact
the service provider for updated card
Unplug card or AC or perform initialize
1st test for QAM clear channel (often network channels are
provided free), if no QAM clear channel is available
remove the card and memorize channels. Verify that a
digital channel can be viewed. If known digital channel
cannot be viewed suspect SIGNAL
Contact service provider
PCMCIA
SLOT
TS &
(CableCARD)
Data
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