Panasonic KX-TG9471B Service Manual page 32

KX-TG9471B/KX-TG9472B/KX-TGA939T
9.1.3.2. Portable
Does Portable make link with normal working
Base Unit?
NO
Is the voltage of "+1.8" about 1.8 V?
Refer to Check Point...(A).
YES
Is the voltage of CP2.5 about 2.5 V?
Refer to Check Point...(B).
YES
Is the voltage of CP4.0 over 4.0 V?
YES
Does the RF clock (CLK) oscillate at 10.368 MHz
in Portable Test Mode?
Refer to Check Point...(J).
YES
Is there CMD60 (: DECT Tester)?
YES
Does Portable make link with CMD60 in
Portable Test Mode?
Refer to Check Point...(K).
YES
Is the NTP value OK?
Refer to Check Point...(K).
YES
Is the modulation OK?
Refer to Check Point...(L).
YES
Is the Frequency Offset OK?
Refer to Check Point...(M).
YES
Continued to the next page.
Cross Reference:
Power Supply Circuit/Reset Circuit (P.12)
Check Point (Portable) (P.44)
Note:
(*1) Refer to Troubleshooting by Symptom (Portable) (P.44).
YES
Portable is OK. Check Base Unit.
NO
Adjust "+1.8" voltage to 1.8 V.
Refer to Check Point...(A).
OK
Check around Power Supply Circuit/Reset Circuit.
NO
Check BBIC (IC1).
NO
NO Check around X1 and RF module and adjust
clock frequency.
Refer to Check Point...(J).
NO (*1)
NO
NO
Replace with a new Circuit Board.
NO
NO
32
NO