HD-52Z575,HD-52Z585,HD-61Z575,HD-61Z585 1 SPECIFICATION 2 SECTION 1 PRECAUTIONS 3 1.1 SAFETY PRECAUTIONS 3 1.2 INSTALLATION 4 1.3 LAMP UNIT HANDLING CAUTION 5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 7 2.1 TECHNICAL INFORMATION 7 3.2 MEMORY IC REPLACEMENT 20 3.3 REPLACEMENT OF CHIP COMPONENT ...