LG LST-4200A Service Manual - Page 32

Is setup of RS-232C Port normal?

Page 32 highlights

(G) YES Is setup of RS-232C Port normal? NO (Baudrate, Parity, Data Bit, Stop Bit) YES Is there pin 11 TxD signal of IC102? NO YES NO Is there pin 12 RxD signal of IC102? RS-232C port setup modification Check IC110 and IC105. Check IC110 and IC105. Fig.08 3-23

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76

3-23
Is setup of RS-232C Port normal?
(Baudrate, Parity, Data Bit, Stop Bit)
(G)
Is there pin 11 TxD signal of IC102?
<Figure. 08>
RS-232C port setup modification
NO
Check IC110 and IC105.
NO
YES
YES
Is there pin 12 RxD signal of IC102?
Check IC110 and IC105.
NO
YES
Fig.08