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nice completed SERVICE MANUAL as the description THANK YOU !!!-
;
Hard to find service manual describing the PLL circuit of the AKAI AP-306.
Thanks to have it available.
;
Gut, sehr gut! It helps me much! I couldn't find this schema nowhere. Good quality
SGH-X140 Flow Chart of Troubleshooting
2-2-4. DCS TX
U402 pin 11 : about 2~3 dBm? NO NO CONTINUOUS TX ON CONDITION CH : 698CH(DCS) TX POWER CODE: 520 CODE Aplied RBW : 100KHz VBW : 100KHz SPAN : 10MHz REF LEV. : 10dBm ATT. : 20dB
U402 pin9 : 2.8 V? YES
U101 check & change
YES C407,CN401 check&change U403 pin10 : about 4~5dBm? YES U402 check & change
NO
U403 pin5 : 3.7 V?
NO
BATTERY check & change
YES
U403 pin 4 : 1.4V ? YES
NO
U701 check
NO
U403 pin9 about : -5dBm ?
YES
U403 pin 6 : 3V? YES U403 change or resolder
NO
U101 check
NO
U404 pin9,32 : 2.8V ?
YES
U101 pinA13,C111 change or resolder
U404 pin8 : 13MHz ? Vp-p : 950mV?
NO
OSC401 change or resolder
YES
NO
U404 pin4,5,6,7:100m V?
YES U101 change or resolder
U404 change or resolder
2-13
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
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