Sharp FO-2970M Service Manual - Page 66

FO-2970MU C56 N.M. 6 - 6 A B C D E F G H I Analog block 6/9 6 +5VA2 C391 1000P R394 C (9-5A) TEL OUT 1K B Q105 2SC2412 R387 10K IC1A Q104 E +24VA NJM2902M DTC114 C (1-1D) MIC MUTE B C392 E N.M C411 1 R395 4.7K +5V IC2B BU4066 3 5 VREF R386 (2.5V) 0 R385 10K C394 1 4 2- 3+ 11 1 R393 3.3K C395 R388 0.1(K) 6.2K DG DG DG 14 7 5 DG DG DG C166 330P R180 44.2K 6 IC7D +5V HCF4053 VDD 16 6 INH C36 0.1 VEE 7 VSS 8 5 4 DG +24VA DG DG IC1C (5-3H) (5-2H) TXA2 TXA1 C396 0.1(K) R389 22K 4 9- 10 + NJM2902M 8 TXOUT (9-5A) +5V +5VA C397 N.M. C390 11 N.M. R175 3.3K +5V R178 (1-1C) GAINC 10K C54 C130 470P R392 C7 C129 1K 10/50 1 R391 44.2K DG +5VA2 DG C15 47/16 C409 0.1 C230 330P IC9 4 (5-2H) N.M IC1B NJM2902M DG +5VA R137 62K K D101 1SS355 SIGRX A +24VA C133 4 0.1 7 -6 +5 R330 11 3.3K DG DG +5V R176 3K C35 16 9 0.1 4 0 5 13 8 IC7A DG HCF4053 R177 0 R182 62K +5VA EXTSIG R214 TP600 N.M. RXIN R215 0 (9-4A) (9-5A) N.M +5V R179 10K BZCONT (1-1D) DG R245 100K R213 3K C13 4.7/50 R244 4 6 150K 2- 5 3+ 1 78 C12 1/50 NJM2113 R367 N.M. R352 N.M. R396 BLM11A102 SP+ SP- (9-2E) (9-1E) 4 C401 DG DG DG VREF (2.5V) DG DG R328 10K +5V N.M. DG R397 BLM11A102 SPMUTE (1-1C) 3 C1 4.7/50 R329 10K (5-5H) SPKRP 11 16 C165 12 0 14 0.1(K) R212 390K C196 0.1(K) C405 1000P 3 DG DG 13 1 IC7C 8 +5V 14 13 DG VOLC (1-6E) HCF4053 DG R150 1 2 1M RCVOL (1-1D) C55 N.M C100 1000P 2 DG R101 47K +5V +24VA (9-5A) TELIN R100 1.5K 4 14 - 13 + 12 R327 3.3K 11 C131 R138 1 1.5K 16 10 15 0 R183 2 27K 11 8 R218 11K DG IC7B HCF4053 C197 0.1(K) DG DG IC1D 1 NJM2902M 7 IC2A 14 12 BU4066 R148 VOLB (1-6E) 11 10 120K 2 7 IC2D 14 6 BU4066 R149 VOLA (1-6E) 8 9 33K C400 0.1 7 IC2C BU4066 DG R217 20K C199 0.01(K) R246 20K BZOUT (2-1C) 1 R247 2K C231 4700P DG DG A B C D E F G H I