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NHM-2/5nx,ny/6/9
Troubleshooting
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Phone unable to stay on or phone
is jammed.
CCONT watchdog is
served,
J200 pulses "1" ->"0"
Software is able to run.
Check UI (keys and display)
Ground the watchdog
(Vbb = 2,8 V)
(VXO = 2,8 V)
PURX (J374) = "1"
(2,8V) after 60 msec.
Check RFC buffer
(V502, R559, C560...)
3DJH
Yes
Yes
No
See section "Phone is dead"
Yes
Check sleepclk
No
(C220) = 32 kHz
Yes
No
Check G502, 26 MHz
Yes
Possible defective ICs :
MAD2 (D300)
SRAM (D302)
FLASH (D301)
CCONT (N201)
1RNLD &RUSRUDWLRQ
PAMS Technical Documentation
No
square wave.
Yes
OK
Check sleepclk circuit
(B200, R214,....)
Defective
CCONT (N201)
or overloads on
the PURX line.
Defective Hagar
,VVXH $SULO
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