Panasonic KX-TG9471B - Page 32

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