Panasonic KX-MB262CX Service Manual page 57

12.3.14.2. DEFECTIVE ITS (Integr 12.3.14.2. DEFECTIVE ITS (Integrated T
1. No handset and speakerphone transmission / reception 1. No handset and speakerphone transmission / reception
Perform a signal test in the ITS or the NCU section Perform a signal test in the
between the handset microphone and telephone line (sending), or between the telephone l between the handset microphone and telephone line (sending), or between the telephone l ine and the handset speaker (receiv-
ing), or between the microphone and the telephone line (sending), or between the telephone line and the speaker (receiving). ing), or between the microphone and the telephone line (sending), or between the telephone line and the speaker (receiving).
Check the components at that point. CHECK SHEET Check the components at that point.
2. No pulse dialing 2. No pulse dialing
3. No ring tone (or No bell) 3. No ring tone (or No bell)
CROSS REFERENCE: CROSS REFERENCE:
CHECK SHEET (P.152) CHECK SHEET (P.152)
NCU SECTION (KX-MB772CX ONLY) (P.25) NCU SECTION (KX-MB772CX ONLY)
ated Telephone System elephone System) SECTION
ITS or the NCU section and locate a defective point (where the signal disappears) on each route and locate a defective point (where the signal disappears) on each route
CHECK SHEET(P (P.152) is .152) is useful for
(P.25)
) SECTION
ine and the handset speaker (receiv-
useful for this investigation. this investigation.
KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX