Pioneer SCU 2556 ZRN Service Manual Download Page 34

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SCU-2456ZRN,2556ZRN

6. ADJUSTMENT

Connection Diagram

Ω

DC Regulated
Power Supply

+14.4V

GND

mV Meter (1)

Oscilloscope

Distortion
Meter

FR+

FL+

ACC

FR-

FL-

Ω

(75

Ω

)

SSG

Stereo

Modulator

Ω

(37.5

Ω

)

Antenn

Plug

Dummy Antenna

Antenna

Jack

VR501

DC V
Meter(2)

FMSL3

FM/AM TUNER UNIT

TUNER AMP UNIT

FM/AM TUNER UNIT (TOP VIEW)

T31

T51

C63

T51

Center
Meter

FM/AM TUNER UNIT (BOTTOM VIEW)

Pin1

Pin13

Pin14

Pin 19

Pin26

VR154

TC1

DC V
Meter(1)

Summary of Contents for SCU 2556 ZRN

Page 1: ...IT SCU 2456ZRN X1B 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 DESTINATI...

Page 2: ...rained 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 ...

Page 3: ...otector 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 ...

Page 4: ...4 SCU 2456ZRN 2556ZRN 2 2 EXTERIOR SCU 2456ZRN ...

Page 5: ...701 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 ...

Page 6: ...6 SCU 2456ZRN 2556ZRN 2 3 EXTERIOR SCU 2556ZRN ...

Page 7: ... 15 DIN Socket CN651 CKS3185 16 Connector CN851 CKS3186 17 DIN Socket CN653 CKS3189 18 Pin Jack CN401 CKS3200 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...

Page 8: ...8 SCU 2456ZRN 2556ZRN ...

Page 9: ... 5 Lch IC751 PMJ002A 19 20 ZCINL FL OUT RL OUT ELECTRONIC VOLUME CONTROL RL FL ACCMUT PEE MUTE Q703 MUTE POWER AMP RLIN FLIN IC551 STBY MUTE RLOUT RLOUT FLOUT FLOUT 15 11 17 19 7 9 4 22 15 16 14 13 18 19 27 28 IN1 L5 IN0 L1 IN2 L0 GND CONC CONB CONA BUP1 BUP2 B U RL RL FL FL FR FR RR RR GND ACC ANT B BUP TELMUTE 12 11 10 9 8 7 6 5 4 3 2 1 Q702 ACC SYSPW MUTE Q555 RL FL 14 2 13 8 4 36 54 37 35 38 B...

Page 10: ...service parts be sure to refer to EXPLODED VIEWS AND PARTS LIST or ELECTRICAL PARTS LIST A a A b A a A a A b A b A b A b A a A a Large size SCH diagram Guide page Detailed page A A a TAPE 12 1dBs AM 22 4dBs FM 12 5dBs M CD 3 8dBs AUX 15 0dBs AUX 15 0dBs AM 22 4dBs FM 12 5dBs M CD 3 7dBs TAPE 12 1dBs 2R2K B B ...

Page 11: ...11 SCU 2456ZRN 2556ZRN 5 6 7 8 5 6 7 8 D C B A A b A TAPE 4 6dBs AM 8 1dBs FM 2 4dBs M CD 2 9dBs AUX 10 0dBs TAPE 21 8dBs AM 18 1dBs FM 28 6dBs M CD 29 0dBs AUX 16 3dBs A TUNER AMP UNIT ...

Page 12: ...12 SCU 2456ZRN 2556ZRN 1 2 3 4 1 2 3 4 D C B A TAPE 12 1dBs AM 22 4dBs FM 12 5dBs M CD 3 8dBs AUX 15 0dBs AUX 15 0dBs AM 22 4dBs FM 12 5dBs 2R2K B B A a A a A b 1 2 3 4 5 6 ...

Page 13: ...13 SCU 2456ZRN 2556ZRN 5 6 7 8 5 6 7 8 D C B A M CD 3 7dBs TAPE 12 1dBs A a A a A b 8 7 9 10 11 12 13 14 15 16 17 ...

Page 14: ...14 1 2 3 4 1 2 3 4 D C B A TAPE 4 6dBs A a A b A b 1 2 3 4 5 6 SCU 2456ZRN 2556ZRN ...

Page 15: ... 5 6 7 8 D C B A TAPE 4 6dBs AM 8 1dBs FM 2 4dBs M CD 2 9dBs AUX 10 0dBs TAPE 21 8dBs AM 18 1dBs FM 28 6dBs M CD 29 0dBs AUX 16 3dBs TUNER AMP UNIT A A b A a A b 8 7 9 10 11 12 13 14 15 16 17 SCU 2456ZRN 2556ZRN ...

Page 16: ...16 SCU 2456ZRN 2556ZRN 1 2 3 4 1 2 3 4 D C B A 3 1 2 FM AM TUNE DSP 201M A11F B 3 3 FM AM TUNER UNIT B ...

Page 17: ...17 SCU 2456ZRN 2556ZRN 5 6 7 8 5 6 7 8 D C B A TUNER UNIT B A ...

Page 18: ...IT NOTE FOR PCB DIAGRAMS 1 The parts mounted on this PCB include all necessary parts for several destination For further information for respective destinations be sure to check with the schematic dia gram 2 Viewpoint of PCB diagrams A A Capacitor Connector P C Board Chip Part SIDE A SIDE B TUNER AMP UNIT ...

Page 19: ...19 SCU 2456ZRN 2556ZRN 5 6 7 8 5 6 7 8 D C B A A R DISPLAY CASSETTE PLAYER M CD PLAYER AUX IN HEADPHONE SYSTEM FMSL3 SIDE A ...

Page 20: ...20 SCU 2456ZRN 2556ZRN 1 2 3 4 1 2 3 4 D C B A A A TUNER AMP UNIT ...

Page 21: ...21 SCU 2456ZRN 2556ZRN 5 6 7 8 5 6 7 8 D C B A A SIDE B ...

Page 22: ...22 SCU 2456ZRN 2556ZRN 1 2 3 4 1 2 3 4 D C B A 4 2 FM AM TUNER UNIT SIDE A B FM AM TUNER UNIT A B ...

Page 23: ...23 SCU 2456ZRN 2556ZRN 1 2 3 4 1 2 3 4 D C B A SIDE B B FM AM TUNER UNIT B ...

Page 24: ... CF 53 Ceramic Filter CTF1442 CF 232 Ceramic Filter CTF1348 X 151 Radiator 918 5Hz CSS1365 X 231 Crystal Resonator 10 26MHz CSS1111 VR 154 Semi fixed 150kΩ B CCP1213 AR 1 DSP 201M RESISTORS R 1 RS1 16S0R0J R 4 RS1 16S154J R 5 RS1 16S391J R 6 RS1 16S223J R 7 RS1 16S123J R 8 RS1 16S332J R 9 RS1 16S473J R 10 RS1 16S223J R 11 RS1 16S124J R 13 RS1 16S563J R 15 RS1 16S271J R 16 RS1 16S104J R 17 RS1 16S3...

Page 25: ...M50 C 219 CCSRCH471J50 C 220 CKSRYB103K25 C 230 CKSRYB103K25 C 231 CCSRCH330J50 C 232 CCSRCH150J50 C 233 CKSQYB104K16 C 234 CEJA330M10 C 235 CKSRYB332K50 C 236 CKSQYB473K16 C 237 CCSRCH120J50 C 239 CKSRYB472K50 C 240 CEJAR47M50 C 241 CKSQYB104K16 C 242 CEJAR47M50 C 243 CEJAR33M50 C 244 CKSQYB473K16 C 245 CKSRYB123K25 C 246 CKSQYB473K16 C 250 CCSRCH471J50 Unit Number UWM6914 SCU 2456ZRN Unit Name T...

Page 26: ...L 503 Ferri Inductor LAU4R7K L 504 Ferri Inductor LAU4R7K L 505 Ferri Inductor LAU2R2K L 551 Choke Coil 0 3mH CTH1075 L 701 Ferri Inductor LAU2R2K L 702 Ferri Inductor LAU2R2K X 501 Crystal Resonator 4 5MHz CSS1011 X 701 Ceramic Resonator 4 190MHz CSS1361 VR 501 Semi fixed 2 2kΩ B CCP1202 AR 501 DSP 201M Fuse 10A CEK1136 RESISTORS R 201 RS1 10S473J R 202 RS1 10S473J R 203 RS1 10S182J R 204 RS1 10S...

Page 27: ...222J R 552 RD1 4PU222J R 553 RD1 4PU222J R 554 RD1 4PU222J R 555 RD1 4PU562J R 556 RD1 4PU562J R 557 RD1 4PU0R0J R 558 RD1 4PU0R0J R 559 RS1 10S104J R 560 RS1 10S104J R 563 RS1 10S391J R 564 RS1 10S273J R 565 RS1 10S103J R 566 RS1 10S103J R 567 RS1 10S103J R 568 RS1 10S331J R 569 RA4C223J R 570 RD1 4PU102J R 571 RD1 4PU103J R 601 RA4C102J R 602 RS1 10S473J R 603 RS1 10S473J R 604 RS1 10S473J R 605...

Page 28: ...04 CKSQYB274K16 C 205 CKSQYB183K50 C 206 CKSQYB183K50 C 207 CKSQYB154K16 C 208 CKSQYB154K16 C 209 CKSQYB154K16 C 210 CKSQYB154K16 C 211 CKSQYB272K50 C 212 CKSQYB272K50 C 213 CKSQYB392K50 C 214 CKSQYB392K50 C 215 CKSQYB821K50 C 216 CKSQYB821K50 C 251 CKSQYB821K50 C 252 CKSQYB821K50 C 253 CKSQYB474K16 C 254 CKSQYB474K16 C 255 CKSQYB333K50 C 256 CKSQYB333K50 C 257 CKSQYB154K16 C 258 CKSQYB154K16 C 25...

Page 29: ... 854 CKSQYB104K50 C 901 CEAT331M10 C 902 CASA680K10 C 903 CEAT101M10 C 904 CEAT470M10 C 905 CEAT1R0M50 C 906 CEAT102M16 C 907 CKSQYB224K16 C 912 CEAT2R2M50 C 913 CSZA220M16 C 914 CKSQYB473K50 C 916 CKSQYB473K50 C 917 CEAT330M10 C 918 CEAT470M10 Unit Number UWM6917 SCU 2556ZRN Unit Name Tuner Amp Unit MISCELLANEOUS IC 201 IC NJM4558MD IC 202 IC NJM4558MD IC 251 IC NJM4558MD IC 252 IC NJM4558MD IC 4...

Page 30: ...R7K L 504 Ferri Inductor LAU4R7K L 505 Ferri Inductor LAU2R2K L 551 Choke Coil 0 3mH CTH1075 L 701 Ferri Inductor LAU2R2K L 702 Ferri Inductor LAU2R2K X 501 Crystal Resonator 4 5MHz CSS1011 X 701 Ceramic Resonator 4 190MHz CSS1361 VR 501 Semi fixed 2 2kΩ B CCP1202 AR 501 DSP 201M Fuse 10A CEK1136 RESISTORS R 201 RS1 10S473J R 202 RS1 10S473J R 203 RS1 10S182J R 204 RS1 10S182J R 205 RS1 10S472J R ...

Page 31: ...393J R 519 RS1 10S102J R 521 RS1 10S563J R 522 RS1 10S102J R 523 RD1 4PU151J R 524 RS1 10S0R0J R 525 RS1 10S0R0J R 540 RS1 10S103J R 542 RS1 10S0R0J R 551 RD1 4PU222J R 552 RD1 4PU222J R 553 RD1 4PU222J R 554 RD1 4PU222J R 555 RD1 4PU562J R 556 RD1 4PU562J R 557 RD1 4PU0R0J R 558 RD1 4PU0R0J R 559 RS1 10S104J R 560 RS1 10S104J R 563 RS1 10S391J R 564 RS1 10S273J R 565 RS1 10S103J R 566 RS1 10S103J...

Page 32: ...R 924 RS1 10S473J R 925 RS1 10S473J R 927 RS1 10S473J CAPACITORS C 201 CKSQYB821K50 C 202 CKSQYB821K50 C 203 CKSQYB274K16 C 204 CKSQYB274K16 C 205 CKSQYB183K50 C 206 CKSQYB183K50 C 207 CKSQYB154K16 C 208 CKSQYB154K16 C 209 CKSQYB154K16 C 210 CKSQYB154K16 C 211 CKSQYB272K50 C 212 CKSQYB272K50 C 213 CKSQYB392K50 C 214 CKSQYB392K50 C 215 CKSQYB821K50 C 216 CKSQYB821K50 C 251 CKSQYB821K50 C 252 CKSQYB...

Page 33: ...T4R7M50 C 751 CEJA1R0M50 C 752 CEJA1R0M50 C 753 CKSQYB272K50 C 754 CKSQYB272K50 C 755 CEAT100M50 C 756 CEAT100M50 C 757 CKSQYB152K50 C 758 CKSQYB152K50 C 759 CKSQYB183K50 C 760 CKSQYB183K50 C 761 CCSQCH221J50 C 762 CCSQCH221J50 C 763 CKSQYB224K16 C 764 CKSQYB224K16 C 765 CKSQYB332K50 C 766 CKSQYB332K50 C 767 CCSQCH101J50 C 768 CCSQCH101J50 C 769 CEJANP2R2M50 C 770 CEJANP2R2M50 C 771 CKSQYB333K50 C...

Page 34: ...istortion Meter BU FR FL ACC FR FL 50 Ω 75 Ω FM SSG Stereo Modulator 50 Ω 37 5 Ω Antenna Plug Dummy Antenna Antenna Jack VR501 DC V Meter 2 FMSL3 FM AM TUNER UNIT TUNER AMP UNIT FM AM TUNER UNIT TOP VIEW T31 T51 C63 T51 Center Meter FM AM TUNER UNIT BOTTOM VIEW Pin1 Pin13 Pin14 Pin 19 Pin26 L2 L4 L5 VR154 TC1 DC V Meter 1 ...

Page 35: ... 108 0 L5 DC V Meter 1 6V IF 2 98 1 M 60 100 98 1 T51 Center Meter 0 ANT Coil 3 98 1 M 5 98 1 L2 mV Meter 1 Maximum RF Coil 4 98 1 M 5 98 1 L4 mV Meter 1 Maximum RF 5 129 3 M 60 80 107 9 TC1 mV Meter 1 Minimum Trimmer 6 RF Coil and RF Trimmer shall be adjusted twice or more IFT 7 98 1 M 5 98 1 T31 mV Meter 1 Maximum STEREO MODE ARC 8 98 1 S 40 98 1 VR154 mV Meter 1 Separation 5dB STEREO MODE FMSL ...

Page 36: ...SRQ Bus service request BRST Bus reset BRXEN Bus reception enable BDATA 1 2 3 4 5 6 7 8 9 10 11 12 13 AUDIO L AUDIO L AUDIO R AUDIO R AUDIO Lch SHIELD MUTE TO HEAD UNIT GND E SHIELD GND AUDIO Rch SHIELD CASSETTE PLAYER 13P 13 12 11 10 9 8 7 6 5 4 3 2 1 6 5 11 10 1 2 7 3 4 8 9 12 13 BDATA BRXEN Bus reception enable BRST Bus reset BSRQ Bus service request BSCK Bus synchronisation clock AUDIO L AUDIO...

Page 37: ...8 1 2 3 4 5 7 8 6 6 9 10 26P A1 A2 A3 A4 A5 A6 A7 A8 B1 B2 B3 B4 B5 B6 B7 B8 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 TEL MUTE BACKUP ACC GND RR RR FR FR FL FL RL RL GND L0 IN2 L1 IN0 L5 IN1 NC NC NC NC NC NC NC 1 2 3 4 5 6 7 8 5V 1 7 RIGHT OUT LEFT OUT RIGHT IN LEFT IN GND COMMON TRANSMITTER INTERFACE ...

Page 38: ... C Key strobe 0 2 30 NC Not used 31 VDT O C Data output for electronic volume 32 VST O C Strobe pulse output for electronic volume 33 VCK O C Clock output for electronic volume 34 tmute O C Tuner mute output 35 RESET I Reset input 36 REMIN I Remote control pulse input 37 bsens I Back up power sense input 38 asens I ACC power sense input 39 vsens I 8V sense input 40 VDD Power supply 41 X2 Crystal o...

Page 39: ...ame I O Format Function and Operation 61 PCK O C Serial clock output for PLL IC 62 BSI I Communication data input 63 BSO O C Communication data output 64 bsck I O C Communication serial clock input output PE5157A 49 48 33 32 17 16 1 64 CWV1065 VDD GND RDSRDY RDSSEN RDSCK RDSDT7 RDSDT6 RDSDT5 RDSDT4 RDSSEL RDSRST SCHK RECEIVE CORR ERROR DK RLOCK SK FMSL FMSD FLCHK SLCHK BPFOUT FM5V COMP GND TUNSEL ...

Page 40: ...L FLOW CHART VDD 5V pin 40 Power ON L L YES bsens pin 37 asens pin 38 brst H pin 13 Source keys operative Completes power on operation After that proceed to each source operation SYSPW H pin 15 Starts communication with slave Source ON YES ...

Page 41: ...08 MHz Usable sensitivity 10 dBf 1 0 µV 75 Ω mono S N 30 dB 40 dB quieting sensitivity 13 dBf 1 7 µV 75 Ω mono Signal to noise ratio More than 50 dB Distortion Less than 1 5 Stereo separation More than 20 dB MW tuner Frequency range 531 1 602 kHz 9 kHz Usable sensitivity 29dBµ S N 20 dB Selectivity More than 45 dB LW tuner Frequency range 153 281 kHz Usable sensitivity 33dBµ S N 20 dB Selectivity ...

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