Panasonic KX-TG6440PK, Service Manual

Page: 54 / 117

54
KX-TG6440PK/KX-TGA641S/KX-TGA641T/KX-TGA740B
10.1.2. Check Record
BASE UNIT
A) Not record Incoming Message
B) How to change the Auto Disconnect activation (time)
Some Telephone Company lines (fiber or cable) ON Hook and OFF Hook voltages are lower than conventional lines, which may
cause a malfunction of Auto Disconnect detection. To solve this problem, try changing the Auto Disconnect activation through
the procedures below.
Note:
*1 Both Auto Disconnect and CPC don't detect for the first 2 seconds.
*2 If the “Disable” is selected, even if the parallel-connected telephone is OFF HOOK, the line isn't disconnected.
C) How to change the VOX level
It makes easier to detect a small voice (caller) by raising the sensitivity of VOX level. Therefore, the recording of TAM is not
turned off during a detection.
Cross Reference:
Signal Route (P.28)
Telephone Line Interface (P.15)
Auto Disconnect Circuit (P.16)
Parallel Connection Detect Circuit (P.17)
Note:
Flash Memory is IC601.
DSP is IC501.
• If successful, a long beep sounds.
• If the “STOP“ key is pressed, stand-by mode is activated.
Auto Disconnect detect CPC detect PROCEDURE at Stand-by mode
Enable*1 [default]
“ERASE”+”L”PLAY ” simultaneously
Enable*1 Disable
“ERASE”+”L”VOL. " simultaneously
Disable*2
“ERASE”+”L”VOL. " simultaneously
• If successful, a long beep sounds.
• If the “STOP“ key is pressed, stand-by mode is activated.
VOX Level sensitivity PROCEDURE at Stand-by mode
Normal [default]
“STOP”+”L”VOL. " simultaneously
6 dB Up
“STOP”+”L”VOL. " simultaneously