Sony HCD-HX7 Service Manual - Page 37

6-19. SCHEMATIC DIAGRAM - AMP Section (HX3/HX7) - • See page 41 for Waveforms. • See page 46 for IC Block Diagrams. HCD-HX3/HX5/HX7 /RST /SD /OTW (Page 34) A+5V AGND R-IN AGND L-IN D+3.3V INIT NSPMUTE DGND SCLATCH SCSHIFT SCDT /SD DGND /RST SOFTMUTE PGMUTE OVF /OTW CN700 19P L701 10µH C731 100 10V C804 0.001 INIT NSPMUTE SCLATCH SCSHIFT SCDT /SD /RST SOFTMUTE PGMUTE OVF /OTW R713 A 100 B R714 100 C740 220 10V R752 C 100 R754 D 100 R756 100 R712 100 R711 100 R706 100 R759 15k C760 0.1 R755 100 DIGITAL POWER AMP IC707 CXD9845AM GVDD _B /OTW /SD PWM_A /RST _AB GVDD _A BST _A PVDD _A OUT _A GND PWM_B GND OC_ ADJ GND OUT_B PVDD _B GND BST_B VREG GND M2 BST_C PVDD _C OUT_C M1 GND PWM_C GND /RST _CD PWM _D OUT_D PVDD_D VDD BST_D GVDD _C GVDD _D R745 100 C751 2.2 50V C701 2.2 50V D701 MMDL914T1 D702 MMDL914T1 C733 0.1 R730 100 C730 0.1 C732 0.1 C748 10 50V R729 1k C738 10 50V C749 0.1 R701 100 R751 100 C743 0.01 C742 0.01 L702 10µH (CHASSIS) EP703 C831 0.1 C832 0.01 R731 470 R733 470 A/D CONVERTER IC701 PCM1803DBR R746 100 +3.3V REGULATOR IC702 NJM2871BF33 VOUT VIN NOISE GND CONT C734 0.001 C741 0.1 C735 10 50V C739 0.01 C736 0.01 R722 47k CLOCK SHIFT IC703 MC74VHC74DTR2 L703 10µH C757 10 50V C744 0.1 C737 0.0047 R780 22 C790 100 16V R757 3.3 C758 0.1 R742 C745 10k 0.01 OVF C747 100 10V C746 0.01 INIT R743 100 R741 100 C806 0.1 R744 0 +1.8V REGULATOR R748 47k R747 470 R749 0 C797 0.01 C798 10 50V R750 47k IC704 NJM2871BF18 NOISE VOUT GND CONT VIN C761 0.01 C714 560p R707 12 C706 0.1 C713 0.047 C707 47 35V C719 1800 35V C764 0.1 C712 R719 0.1 3.3 C702 0.1 R720 3.3 C715 560p R708 12 C718 0.047 C763 0.047 C708 47 35V C765 0.1 C767 0.1 R709 12 C716 560p C709 47 35V C766 0.1 C768 0.047 C710 47 35V C717 R710 560p 12 C756 0.1 R770 3.3 C762 0.1 R769 3.3 C769 1800 35V C791 0.1 R765 0 Q701 2SC3052 PROTECT DETECT R793 47k Q702 2SA1235 L710 10µH C720 1 R721 10k C728 1 L711 10µH R718 10k R739 10k R740 10k C722 0.0022 C723 0.0022 R724 4.7 R725 4.7 C724 0.0022 C725 0.0022 C844 0.1 C845 0.1 CN702 2P L+ L- R726 220k R727 100k C726 2.2 R728 220k Q702,703 OVER LOAD DETECT R792 0 C794 1 Q703 2SA1235 Q752 2SA1235 Q752,753 OVER LOAD DETECT C778 R776 2.2 220k R777 100k R778 220k Q753 2SA1235 L760 10µH C770 1 R771 10k R772 10k C777 1 L761 10µH R768 10k R773 10k C772 0.0022 C773 0.0022 R774 4.7 R775 4.7 C774 0.0022 C775 0.0022 C846 0.1 C847 0.1 CN703 2P R+ R- P1 (Page 40) Q1 (Page 40) R789 100 R788 100 R787 100 R786 100 R785 100 R784 100 SCLATCH SCSHIFT SCDT PGMUTE SOFTMUTE NSPMUTE C787 0.001 C788 0.1 C711 220 16V +27V GND +27V GND +12V GND CN704 4P CN705 2P R1 (Page 45) S1 (Page 45) R790 100 STREAM PROCESSOR IC705 CXD9788AR C781 10 50V C799 0.01 C779 C780 0.01 0.001 C754 0.001 C752 0.1 C796 0.1 C704 0.001 A B C753 100 10V C D L704 10µH C783 10p L705 1µH C785 10p C784 0.001 CLOCK BUFFER IC709 MC74VHC1GU04 VCC NC R783 R782 22 1M X702 49.152MHz R781 100 GND C786 0.001 EP702 EP701 (CHASSIS) HCD-HX3/HX5/HX7 37 37