ORDER NO.PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, JapanPIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, BelgiumPIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936PIONEER CORPORATION 2006ARP3393T – ZZY SEPT. 2006 Printed in JapanTHIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).Model Type Power Requirement RemarksPRO-940HD KUCXC AC120 VPRO-940HDPLASMA DISPLAY¶ This service manual should be used together with the following manual(s):Model No. Order No. RemarksPDP-4271HD/KUCXC ARP3356 SAFETY INFORMATION, EXPLODED VIEWS AND PARTS LIST, BLOCK DIAGRAM,PCB PARTS LIST, ADJUSTMENT, IC INFORMATION etc.ARP3357 SCHEMATIC DIAGRAM and PCB CONNECTION DIAGRAMCONTENTS1. CONTRAST OF MISCELLANEOUS PARTS .............................. 22. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ................... 102.1 OVERALL WIRING DIAGRAM ............................................ 102.2 HNM BLOCK DIAGRAM ..................................................... 122.3 CONNECTOR PIN DESCRIPTION .................................... 132.4 HN MODULE ASSY (1/6) .................................................... 142.5 HN MODULE ASSY (2/6) .................................................... 182.6 HN MODULE ASSY (3/6) .................................................... 202.7 HN MODULE ASSY (4/6) .................................................... 222.8 HN MODULE ASSY (5/6) .................................................... 242.9 HN MODULE ASSY (6/6) .................................................... 263. PCB CONNECTION DIAGRAM ................................................ 283.1 HN MODULE ASSY ............................................................ 284. TROUBLESHOOTING .............................................................. 305. IC INFORMATION..................................................................... 33