Service manual

13
21HS-50H
LED FLASHING CODE
IC/Module Name Slave Address Bus Error LED Remarks Ref. No.
Blinking Time
M24C04 A0,A2 2 512x8 EEPROM IC1002
TDA935x/6x/8x 8A 3 Address of internal TV processor IC801
VTST6HD64 or C0 6 PLL Tuner TU201
CTF551 C0 6
MSP34x5G 80 5 Multistandard Sound Processor IC3001
PURPOSE: The led indicates the power mode,ocurred I
2
C error and On timer
INPUT: - Current power mode
- I
2
C Errors
- On timer
Processing: - If in STANDBY mode and On timer in-active then switch LED off.
- If in STANDBY and On timer active
set LED to blinking, (switch on and off at 1 Hz with a 50 % duty cycle).
- If in POWER-ON mode, switch LED on.
- If an I
2
C error occurred, let the LED blink at 1 Hz, 50 % duty cycle.
For the blinking times see the Table below.
Note: Only when an I
2
C error occurs for a number of times, or for a number of seconds,
the I
2
C error is handled by the system (that is ,only then the set will go to standby,
the led starts blinking).
F 7341N0 PRINTED WIRING BOARD. Components side.
0
1
2
3
4
5
6
Y
X
101
2
3
4
56 78
9
Table Error LED blinking times