Sony RDR-HX520 Service Manual page 4

SWITCHING REGULATOR (SRV-1858EK)
SCHEMATIC DIAGRAM ···························· 4-39
4-3. PRINTED WIRING BOARDS
• RD-060 (RISM3, VDEC, A/V INTERFACE,
AUDIO DAC/ADC)
PRINTED WIRING BOARD ······················· 4-41
5. IC PIN FUNCTION DESCRIPTION
5-1. IT CONTROL IC
(IC603: M306H5MG-A13FP, M306H5MC-C33FP,
M306H5FGFP (AV-103 BOARD)) ································· 5-1
5-2. MAIN CONTROL IC
(IC103: R8A34012BG (RD-060 BOARD)) ···················· 5-4
6. SERVICE MODE
6-1. Check Item ······································································ 6-1
6-2. Screen Transition in the Service Mode ···························· 6-2
6-3. Items and Description of Service Mode Menu ················ 6-3
6-4. Device Check Menu (Diagnostic Test) ···························· 6-3
6-5. Hard Disk Check Menu ··················································· 6-4
7. ADJUSTMENT
7-1. Video System Adjustment ··············································· 7-1
8. REPAIR PARTS LIST
8-1. EXPLODED VIEWS
8-1-1. OVERALL SECTION ····················································· 8-1
8-1-2. CHASSIS SECTION ······················································· 8-2
8-2. ELECTRICAL PARTS LIST ·········································· 8-3
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