LG KG270 Service Manual - Page 89
Key Backlight, Gb3_radio, Rev-1.1, Key Matrix, Audio,lcd,key
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7. CIRCUIT DIAGRAM 1 2 3 4 5 6 7 8 9 10 A A 2V0_VRTC KEY MATRIX END VBAT CHARGE PUMP END_KEY SW200 U200 5 IN AAT3157ITP-T1 10 C1+ C200 MAKER ID Voltage 1u KEY_OUT1 R201 SW201 1 SW202 2 SW203 3 SW204 LEFT SW205 MENU MLED W_LED_DRV R202 C202 100K 27p 8 CP 11 EN_SET 4 GND 9 C1C2+ 7 C2- 6 D1 1 D2 2 3 D3 NC 12 C201 1u MLED1 MLED2 C203 C204 SII SHARP GP HIGH LOW 150Kohm pull up 1.9V 0V 0.9V 680 C205 27p 27p NA SW206 4 SW207 5 SW208 6 SW209 UP SW210 SEL B KEY_OUT2 R203 680 C206 NA KEY_OUT3 R204 680 C207 NA KEY_OUT4 R209 680 C215 NA SW211 7 SW216 * C216 NA SW212 8 SW2170 C217 NA SW213 9 SW214 RIGHT SW215 SEND SW218 # SW219 DOWN C218 NA C219 NA C220 NA LCD_RESET SSC0_CLK R205 R207 C208 NA MTPG 47 47 MLED C209 27p C210 27p MLED2 R210 100K 2V8_VIO CN200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MTPD R206 R208 MLED1 C221 1u LCD_ID C211 27p C212 27p 47 CS3 47 SSC0_MTSR C213 C214 NA NA KEY_IN0 KEY_IN1 KEY_IN2 KEY_IN3 KEY_IN4 R211 680 R212 680 R213 680 R214 680 R215 680 IMSA-9671S-13Y902 (ENQY0013801) C D E 1 LGIC(42)-A-5505-10:01 VBAT KEY BACKLIGHT 1u R221 100ohm 100ohm R220 100ohm R219 100ohm R218 C223 LD205 LEBB-S14H LD204 LEBB-S14H LD203 LEBB-S14H LD202 LEBB-S14H LEBB-S14H 100ohm R217 LEBB-S14H 100ohm R216 C222 1u (10V,K,X5R) LD201 LD200 KEY_BACKLIGHT R222 1K R223 10K 2SC5585 Q200 (10V,K,X5R) 2 3 4 D Iss. 5 Notice No. Date Name Section Designer Checked Approved Date 11/16 2006 Sign & Name HYUN-OK.LEE MODEL DRAWING NAME GB3_RADIO Sheet/ Sheets 2/4 AUDIO,LCD,KEY LG Electronics Inc. DRAWING NO. REV-1.1 LG Electronics Inc. - 90 -
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