Sharp CDC2900 Service Manual - Page 26

CD-C622/C2900 + -Vcc -Vcc +Vcc NC NC Ch1 Out Ch2 Out - - A IC901 STK4074B POWER AMP (2Ch) Ch2 + Ch1 C904 10/50 C907 10/50 R925 0.1(1W) R929 1K 1 2 34 5 6 78 9 10 C915 11 12 13 C923 14 15 R912 100(1/4W) 47P C916 47P R921 22K C924 15P R924 56K R923 Fusible 15P 820 R922 1K C918 47/50 C911 100/50 R917 56K R918 820 C912 R916 B R913 100/50 100 (1/4W) Fusible R926 1K C917 47/50 0.1 (1W) D903 D906 1SS133 1SS133 R939 56K R938 56K Q906 2SC3331 1 L C901 1/50 R905 1K A_GND 2 C C921 0.022 R931 10K Q905 2SC3331 C920 0.022 R930 R928 10K 1K Q904 2SC3331 D904 1SS133 Q907 2SC3331 C938 47/50 +B C93 0. (M R936 56K R93 4.7 R903 R901 100K 100K R904 R902 68K 68K C905 C902 220P 220P 3 R C903 1/50 R907 1K +B SP_DET 4 SP_RLY 5 +B +B D -B 6 -15V P24 2 - D, P25 12 - G TO MAIN SECTION M_12V 7 E 8 +5V R830 680 (2W) C909 2200/50 C910 2200/50 +B1 R966 22K -B +B VOLTAGE REGULATOR +B Q821 Q823 AN78L05 KTD2058 Y +B 3 1 2 R831 3.3(1/2W) R825 33 C824 0.047(ML) R832 22K C825 22/25 D821 1SS133 D820 1SS133 C830 47/25 C821 0.047(ML) D_GND 9 A_12V +B 10 A_GND 11 F CD_+B 12 +B CD_GND 13 M_GND 14 15 -VF 16 VF2 17 VF1 R837 10K C831 47/25 C832 0.1(ML) R827 22K C826 47/25 VOLTAGE REGULATOR Q824 KIA7812P 3 1 2 C827 0.1 (ML) C828 0.1 (ML) Q822 VOLTAGE KIA7806P REGULATOR 3 1 D832 2 +B 1SS133 C833 0.1 (ML) D833 1SS133 C829 3300 D801 TS6B04 D803 +B2 1N4004S +B D804 1N4004S D806 1N4004S D805 1N4004S Z M C803 47/50 R803 47K R802 47 ZD801 MTZJ6.2A C802 100/35 R801 12K Q80 KTA127 VOLTA REGULA P29 12 - E TO DISPLAY PWB CNS806 1 G 2 A 3 FM SIGNAL 4 CN MAIN PWB-A1(3/3) H • NOTES ON SCHEMATIC DIAGRAM can be found on page 15. 1 2 3 4 5 6 Figure 26 SCHEMATIC DIAGRAM (7/10) - 26 -