Sharp LC-32LE631E Service Manual page 49

Service Modes, Error Codes, and Fault Finding (continued)
Detect2 is moved to an interrupt. To be checked if
the detection on interrupt base is feasible or not or if
we should stick to the standard 40ms interval.
No
Off
Mains is applied
Standby Supply starts running.
All standby supply voltages become available.
st-by μP resets
Initialise I/O pins of the st-by μP:
- Switch reset-AVC LOW (reset state)
- Switch reset-system LOW (reset state)
- Switch reset-Ethernet LOW (reset state)
- Switch reset-USB LOW (reset state)
- Switch reset-DVBs LOW (reset state)
- keep Audio-reset and Audio-Mute-Up HIGH
start keyboard scanning, RC detection. Wake up reasons are
off.
Switch ON Platform and display supply by switching
LOW the Standby line.
+12V, +24Vs, AL and Bolt-on power
is switched on, followed by the +1V2 DCDC converter
Detect2 high received
within 2 seconds?
Yes
Enable the DCDC converters
(ENABLE-3V3n LOW)
Wait 50ms
Enable the supply detection algorithm
Set I²C slave address
of Standby μP to (A0h)
Detect EJTAG debug probe
(pulling pin of the probe interface to
ground by inserting EJTAG probe)
EJTAG probe
connected ?
No
No Cold boot?
Yes
Release AVC system reset Release AVC system reset
Feed warm boot script Feed cold boot script
Figure 5-4 "Off" to "Semi Stand-by" flowchart (part 1)
Stand by or
Protection
If the protection state was left by short circuiting the
SDM pins, detection of a protection condition during
startup will stall the startup. Protection conditions in a
playing set will be ignored. The protection mode will
- Switch Audio-Reset high.
It is low in the standby mode if the standby
mode lasted longer than 10s.
12V error:
No Layer1: 3
Layer2: 16
Enter protection
An EJTAG probe (e.g. WindPower ICE probe) can be
connected for Linux Kernel debugging purposes.
Yes
Release AVC system reset
Feed initializing boot script
disable alive mechanism
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LC-32LE631
LC-40LE631
LC-46LE631
not be entered.
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