PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, JapanPIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.PIONEER EUROPE N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, BelgiumPIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936C PIONEER CORPORATION 2000 K-ZZS. FEB. 2000 Printed in JapanORDER NO.CRT2457SYSTEM CONTROL UNITSCU-2456 ZRN X1B/EWServiceManualRENAULTSCU-2456ZRN/X1B/EWSCU-2556ZRN X1 B/EWCONTENTS1. SAFETY INFORMATION ............................................22. EXPLODED VIEWS AND PARTS LIST .......................23. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....94. PCB CONNECTION DIAGRAM ................................185. ELECTRICAL PARTS LIST ........................................246. ADJUSTMENT..........................................................347. GENERAL INFORMATION .......................................367.1 CONNECTOR FUNCTION DESCRIPTION .........367.2 IC ........................................................................387.3 OPERATIONAL FLOW CHART ...........................408. SPECIFICATIONS......................................................41VEHICLE DESTINATION PRODUCED AFTER PART No. ID No. PIONEER MODEL No.ESPACE and AVANTIME EUROPE March 2000 6025 40 3834 SCU-2456ZRN/X1B/EWESPACE and AVANTIME EUROPE March 2000 6025 40 2759 SCU-2556ZRN/X1B/EW