Sharp GX20 Service Manual - Page 122

GX20 KEY PWB-B (1/2) A CONFIDENTIAL ) () ) () ( ( ) () LED312 R346 YPY1105C 1K LED311 R345 YPY1105C 1.5K LED310 R344 YPY1105C 1K LED308 R342 YPY1105C 820 LED309 R343 YPY1105C 1K LED305 R339 YPY1105C 820 LED306 R340 YPY1105C 820 LED307 R341 YPY1105C 820 ( LED304 R338 YPY1105C 820 LED303 R337 YPY1105C 1.5K LED302 R336 YPY1105C 820 LED301 R335 YPY1105C 1K IC302 VBAT NJM2871F03 B 3.0V REGULATOR VBAT C342 0.1 1 CONT VIN 5 2 GND 3 C340 0.1 NB VOUT 4 Q303 2SC4617 R () D304 C341 0V TP346 C 1SS388 1 R325 1.2K 0V TP345 R327 68K VBAT 1 Vin Vout 5 R326 C330 10K 1 C329 C331 0.01 2.2 2 Vss 3 ON/OFFNp 4 D IC306 TK71635S HIGH SPEED LDO REGULATOR D309 CUS01 D306 CUS01 D303 1.67V 1 6 RB160M30 5-24 (2-C) C321 0.01 1.68V 2 5 CHGIN 1.36V 3 4 E Q305 CPH6311 R348 0.18 (1/2W) () TP321 TP320 F 31 VBAT TPB333 TPB335 G D305 1SS388 TPB332 TPB334 C332 22 C349 2.2 VBAT_BB 5-29 (10-C) VBAT_AP VBAT_S IC303 TK11129CSIL 2.9V REGULATOR 4 C318 2.2 Q308 2SA1955 A 0V 2.9V VTCXO VTCXO TP317 2.9V VSYNTH G VSYNTH 5-30 (1-F) G R349 2.2K Np(Vref) Vout 1 Cont Vin 5 2 GND 3 0.01 C350 H NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1. 1 2 3 4 Figure 21 SCHEMATIC DIAGRAM (19/24) 5 - 26 2.9V VRF VRF 5 6