PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER 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, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2000
K-ZZS. FEB. 2000 Printed in Japan
ORDER NO.
CRT2457
SYSTEM CONTROL UNIT
SCU-2456ZRN
X
1B/EW
Service
Manual
RENAULT
SCU-2456ZRN/X1B/EW
SCU-2556ZRN X1B/EW
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................2
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....9
4. PCB CONNECTION DIAGRAM ................................18
5. ELECTRICAL PARTS LIST ........................................24
6. ADJUSTMENT..........................................................34
7. GENERAL INFORMATION .......................................36
7.1 CONNECTOR FUNCTION DESCRIPTION .........36
7.2 IC ........................................................................38
7.3 OPERATIONAL FLOW CHART ...........................40
8. SPECIFICATIONS......................................................41
VEHICLE
DESTINATION
PRODUCED AFTER
PART No.
ID No.
PIONEER MODEL No.
ESPACE and AVANTIME EUROPE
March 2000
6025 40 3834
SCU-2456ZRN/X1B/EW
ESPACE and AVANTIME EUROPE
March 2000
6025 40 2759
SCU-2556ZRN/X1B/EW
2
SCU-2456ZRN,2556ZRN
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair
complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so
and refer the repair to a qualified service technician.
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1
2
5
3
6
4
7
3
SCU-2456ZRN,2556ZRN
1 Cover
UHD-026
2 Protector
UHP-020
3 Polyethylene Bag
UEG-012
4 Protector
UHP-018
5 Protector
UHP-019
6 Protector
UHP2266
7 Contain Box(2456ZRN)
UHL3974
Contain Box(2556ZRN)
UHL3975
Mark No. Description
Part No.
- PACKING SECTION PARTS LIST
NOTE:
- Parts marked by "*" are generally unavailable because they are not in our Master Spare Parts List.
- Screws adjacent to
mark on the product are used for disassembly.
4
SCU-2456ZRN,2556ZRN
2.2 EXTERIOR(SCU-2456ZRN)
5
SCU-2456ZRN,2556ZRN
1 Screw
BMZ30P060FMC
2 Screw
BMZ30P140FMC
3 Chassis
CNA2288
4 Case
CNB1780
5 Insulator
CNM3864
6 Cover
CNS4018
7 Screw
BMZ30P140FMC
8 Heat Sink
CNC7755
9 Tuner Amp Unit
UWM6914
10,11 ·····
12 Connector(CN652)
CKS3180
13 Connector(CN852)
CKS3181
14 Connector(CN701)
CKS3182
15 DIN Socket(CN651)
CKS3185
16 Connector(CN851)
CKS3186
17 DIN Socket(CN653)
CKS3189
18 ·····
19 Holder
CNC5105
20 Holder
CNC5107
21 Holder
CNC5433
22 ·····
23 FM/AM Tuner Unit
CWE1416
24-28 ·····
29 Holder
CNC6555
30 ·····
31 Screw
BMZ30P060FMC
32 ·····
33 Fuse(10A)
CEK1136
34 Connector(CN551)
CKM1258
35 ·····
36 Holder
CNC5106
37 Holder
CNC5435
38 Holder Unit(CN501)
CXA6151
39 IC(IC901)
PA2024A
40 Transistor(Q906)
2SA1358
41 ·····
42 IC(IC551)
TDA7385
- EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.