Pioneer KEH-P490 Service Manual Download Page 56

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KEH-P490,P4900,P4950

Connection Diagram (KEH-P4900/X1M/UC)

This Product

Antenna jack

Multi-CD player

(sold separately)

terminal always supplied with power

regardless of ignition switch position.

electric terminal controlled by ignition

switch (12

DC) ON/OFF

Connecting cords with

RCA

pin plugs

(sold separately)

Blue/white

system control terminal of

the power amp or

Auto-antenna

relay control terminal.

(Max. 300 mA

DC.)

Power amp

(sold separately)

vehicle (metal) body

Rear

speaker

Front

speaker

Black (ground)

Red

ellow

White

White/black

Gray

Gray/black

Green

Green/black

iolet

iolet/black

Rear output

Fuse

≠

Left

Right

System remote control

Front

speaker

Rear

speaker

Rear

speaker

Rear

speaker

Perform these connections when using a

dif

ferent amp (sold separately).

ith a 2 speaker system, do not connect

anything to the speaker leads that are not

connected to speakers.

Summary of Contents for KEH-P490

Page 1: ... Singapore 159936 C PIONEER CORPORATION 1999 K ZZB DEC 1999 Printed in Japan ORDER NO CRT2404 MULTI CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM AM TUNER KEH P490 X1N UC Service Manual KEH P4900 X1N UC KEH P4950 X1N ES This service manual should be used together with the following manual s Model No Order No Mech Module Remarks CX 1011 CRT2406 3L Cassette Mech Module Mechanism Description Disassem...

Page 2: ...ton CHG3889 CHG3902 13 Contain Box CHL3889 CHL3902 14 Protector CHP2244 CHP2252 15 Protector CHP2243 CHP2251 Part No Mark No Description KEH P4950 X1M ES KEH P4950 X1N ES 12 Carton CHG3890 CHG3903 13 Contain Box CHL3890 CHL3903 14 Protector CHP2244 CHP2252 15 Protector CHP2243 CHP2251 EXTERIOR Page 4 EXTERIOR SECTION PARTS LIST Part No KEH P490 X1M UC KEH P490 X1N UC KEH P4900 X1M UC KEH P4900 X1N...

Page 3: ...52 ADJ VR302 VR301 IC253 CN252 CN254 CN253 CN255 M1 M2 HEAD ASSY CN256 21 22 1 2 3 4 5 6 S3 70µs SW S1 LOAD SW S2 MODE SW CN256 EGN1 REEL SENSE PCB CONNECTION DIAGRAM CASSETTE MECHANISM MODULE D A CN602 E D CN253 DECK UNIT D DECK UNIT E REEL SENSE UNIT SIDE A SIDE B ...

Page 4: ...271 1K R272 1K R290 0R C403 R0 R403 82 C402 3900P C401 R33 R402 R401 4R7K R323 0R0 R257 1K C255 R01 C272 R1 C313 100P R286 0R0 R285 0R0 HD1 HEAD ASSY EXA1592 TEST TAPE NCT 150 400Hz 200nWb m RL RR FR FL C302 R1 C301 R1 R304 R302 16K 16K R305 16K R303 16K 6dBs 388mV 1dB Fwd R Fwd L Rev R Rev L PBFB2 PBRIN2 PBGND PBFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 PBTC1 PBOUT1 OUTREF1 TAPEIN1 VCC LINEOUT1 TC...

Page 5: ... 18K R401 4R7K R351 1K R352 1K R353 1K R354 1K R373 0R0 R355 270K C352 3900P R362 300 C351 R22 C353 R01 C354 R01 R374 0R0 C356 R01 C355 R1 D352 1SS355 M1 MOTOR UNIT MAIN MOTOR EXA1491 S1 LOAD ESG1007 S2 ESG1007 MODE REEL SENSE EGN1 EGN1004 M2 MOTOR UNIT SUB MOTOR EXA1580 RS3 RS2 RS1 SC2 SC1 TAB MC CE VCC2 NC VCC MCS RRS FRS RSB C TAB MS2 NC NC MM SM1 RSB GND RS mtl MCS load CN255 CN253 CN256 CN254...

Page 6: ...6 KEH P490 P4900 P4950 CASSETTE MECHANISM MODULE ...

Page 7: ...1548 30 Worm Wheel ENV1550 31 Lever ENV1551 32 Flywheel ENV1554 33 Gathering PCB ENX1054 34 Switch S1 S2 ESG1007 35 Deck Unit EWM1023 36 Plug CN251 CKS3540 37 Gathering PCB ENX1053 38 Motor Unit M1 EXA1491 39 Motor EXM1028 40 Head Assy HD1 EXA1592 41 Motor Unit M2 EXA1580 42 Screw BMZ20P022FMC 43 Bracket ENC1528 44 Chassis Unit EXA1582 45 Pinch Holder Unit EXA1584 46 Pinch Roller ENV1518 47 Pinch ...

Page 8: ...NTS 1 SAFETY INFORMATION 2 2 EXPLODED VIEWS AND PARTS LIST 2 3 BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 9 4 PCB CONNECTION DIAGRAM 24 5 ELECTRICAL PARTS LIST 33 6 ADJUSTMENT 40 7 GENERAL INFORMATION 42 7 1 DISASSEMBLY 42 7 2 PARTS 43 7 2 1 IC 43 7 2 2 DISPLAY 47 8 OPERATIONS AND SPECIFICATIONS 48 KEH P490 X1M UC KEH P4950 X1M ES KEH P4900 X1M UC This service manual should be used together with the foll...

Page 9: ...ex 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 WARNING This product contains lead in solder and certain el...

Page 10: ...H1650 3 Screw Assy CEA2351 CEA2351 CEA2351 4 Screw CBA1304 CBA1304 CBA1304 5 Polyethylene Bag CEG 127 CEG 127 CEG 127 6 Screw CRZ50P090FMC CRZ50P090FMC CRZ50P090FMC 7 Screw TRZ50P080FMC TRZ50P080FMC TRZ50P080FMC 8 Polyethylene Bag CEG 158 CEG 158 CEG 158 9 Handle CNC5395 CNC5395 CNC5395 10 Bush CNV3930 CNV3930 CNV3930 11 Polyethylene Bag CEG1173 CEG1173 CEG 162 12 Carton CHG3893 CHG3889 CHG3890 13...

Page 11: ... 9 8 17 16 18 13 24 14 26 14 6 19 5 12 33 32 15 28 27 31 22 21 10 2 2 2 3 3 47 30 54 67 57 52 53 55 51 56 50 58 49 63 61 60 65 66 64 62 48 48 48 59 34 37 46 46 43 11 46 46 44 45 42 36 39 35 41 40 38 4 29 1 1 1 1 68 7 2 A A 2 2 EXTERIOR ...

Page 12: ... Spring CBH1838 46 Screw IMS20P030FZK 47 Detach Grille Assy See Contrast table 2 48 Screw BPZ20P100FZK 49 Button DETACH CAC5789 50 Button 1 6 CAC6239 51 Button SOURCE CAC6241 52 Button CAC6242 53 Button CAC6243 54 Button AUDIO CAC6245 55 Button EQ CAC6247 56 Button EJECT CAC6268 57 Button BAND CAC6269 58 Spring CBH2103 59 Cover CNS5635 60 Keyboard Unit See Contrast table 2 61 LCD LCD1901 CAW1563 6...

Page 13: ...6 KEH P490 P4900 P4950 2 3 CASSETTE MECHANISM MODULE ...

Page 14: ...NV1547 29 Gear ENV1548 30 Worm Wheel ENV1550 31 Lever ENV1551 32 Flywheel ENV1554 33 Gathering PCB ENX1054 34 Switch S1 S2 ESG1007 35 Deck Unit EWM1023 36 Plug CN251 CKS3540 37 Gathering PCB ENX1053 38 Motor Unit M1 EXA1491 39 Motor EXM1028 40 Head Assy HD1 EXA1506 41 Motor Unit M2 EXA1580 42 Screw BMZ20P022FMC 43 Bracket ENC1528 44 Chassis Unit EXA1582 45 Pinch Holder Unit EXA1584 46 Pinch Roller...

Page 15: ...8 KEH P490 P4900 P4950 ...

Page 16: ... VCC VDD 1 2 8 5 6 B U TX TX RX RX ASENBO ASENBO IP BUS DRIVER IC702 CA0008AM BUSL BUSL BUS BUS Q701 Q702 8 1 5 11 7 56 61 1 54 60 1 2 66 65 70 69 37 48 38 MUTE RESET BSENS ASENS SWVDD DPDT KYDT DSENS ASEMBO MCMUTE STBY MTL LOADSW X1 X2 SYSTEM CONTROLLER IC601 2 2 PE5086A X601 Q906 BSENS ASENS ACC FUSE 10A IC901 TPD1018F B REMOTE 5 1 6 B U SYSPW B U STBY B U MUTE MTL LOAD 42 63 8 9 5 DSENS Q601 SW...

Page 17: ...4900 P4950 1 2 3 4 1 2 3 4 D C B A 3 2 OVERALL CONNECTION DIAGRAM GUIDE PAGE Note When ordering service parts be sure to refer to EXPLODED VIEWS AND PARTS LIST or ELECTRICAL PARTS LIST A a A b A a A b A b A a Large size SCH diagram Guide page Detailed page A A a ...

Page 18: ...CEK1136 TUNER AMP UNIT A 11 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A A b A ...

Page 19: ...FM AM TUNER UNIT B 12 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A A a A a A b 1 ...

Page 20: ...13 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A KEYBOARD UNIT DECK UNIT C D A a A a A b 2 3 ...

Page 21: ...14 1 2 3 4 1 2 3 4 D C B A A a A b A b KEH P490 P4900 P4950 CEK1136 TUNER AMP UNIT A 1 ...

Page 22: ...15 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A A b A a A b 2 3 ...

Page 23: ...3 1 2 FM AM TUNER UN D1 D2 RD39JS RD39JS R1 R2 2R2M 2R2M D6 MA157 16 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A B 3 3 FM AM TUNER UNIT CWE1467 KEH P490 X1M UC KEH P4900 X1M UC B ...

Page 24: ...17 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A B ER UNIT IFC A ...

Page 25: ...18 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A 3 1 2 FM AM TUNER UN D1 D2 RD39JS RD39JS R1 R2 2R2M 2R2M D6 MA157 B CWE1486 KEH P4950 X1M ES B ...

Page 26: ...19 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A R UNIT IFC A B ...

Page 27: ...20 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A C 3 4 KEYBOARD UNIT ...

Page 28: ...DISP CLOCK RPT PAUSE BSM KEYBOARD UNIT CN601 C A 21 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A C ...

Page 29: ...1 18K R273 1K R274 1K R271 1K R272 1K R290 C403 R403 C402 3900P C401 R33 R323 0R0 R257 1K C255 R01 C272 R1 C313 100P R286 0R0 R285 0R0 HD1 HEAD ASSY EXA1506 TEST TAPE NCT 150 400Hz 200nWb m RL RR FR FL C302 R1 C301 R1 R304 R302 16K 16K R305 16K R303 16K 6dBs 388mV 1dB Fwd R Fwd L Rev R Rev L PBFB2 PBRIN2 PBGND PBFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 PBTC1 PBOUT1 OUTREF1 TAPEIN1 VCC LINEOUT1 TCH...

Page 30: ...18K R401 4R7K R351 1K R352 1K R353 1K R354 1K R373 0R0 R355 270K C352 3900P R362 300 C351 R22 C353 R01 C354 R01 R374 0R0 C356 R01 C355 R1 D352 1SS355 M1 MOTOR UNIT MAIN MOTOR EXA1491 S1 LOAD ESG1007 S2 ESG1007 MODE REEL SENSE EGN1 EGN1004 M2 MOTOR UNIT SUB MOTOR EXA1580 RS3 RS2 RS1 SC2 SC1 TAB MC CE VCC2 NC VCC MCS RRS FRS RSB C TAB MS2 NC NC MM SM1 RSB GND RS mtl MCS load CN255 CN253 CN256 CN254 ...

Page 31: ...IAGRAMS 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 Capacitor Connector P C Board Chip Part SIDE A SIDE B TUNER AMP UNIT CN1901 CORD ASSY C A ...

Page 32: ...25 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A A SIDE A CN251 D B ANTENNA IP BUS ...

Page 33: ...26 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A A TUNER AMP UNIT A ...

Page 34: ...27 KEH P490 P4900 P4950 5 6 7 8 5 6 7 8 D C B A A SIDE B ...

Page 35: ...28 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A 4 2 FM AM TUNER UNIT B SIDE A FM AM TUNER UNIT A B ...

Page 36: ...29 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A B SIDE B FM AM TUNER UNIT B ...

Page 37: ...30 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A 4 3 KEYBOARD UNIT EQ EQ VOL VOL SOURCE 1 2 3 4 5 6 CLOCK RPT DISP AUDIO BAND PAUSE BSM EJECT KEYBOARD UNIT KEYBOARD UNIT SIDE A SIDE B CN601 C A C C ...

Page 38: ...0 P4900 P4950 1 2 3 4 1 2 3 4 D C B A D SIDE A 4 4 CASSETTE MECHANISM MODULE CN602 A IC Q IC251 Q351 Q352 ADJ VR302 VR301 IC253 CN252 CN254 CN253 CN255 M1 M2 HEAD ASSY CN256 21 22 E DECK UNIT D DECK UNIT D SIDE B ...

Page 39: ...32 KEH P490 P4900 P4950 1 2 3 4 1 2 3 4 D C B A E 1 2 3 4 5 6 S3 70µs SW S1 LOAD SW S2 MODE SW CN256 EGN1 REEL SENSE D CN253 REEL SENSE PCB E ...

Page 40: ...SS270 D 603 Diode 1SS270 D 604 Diode 1SS270 D 605 Diode 1SS270 D 606 Diode 1SS270 D 607 Diode 1SS270 D 608 Diode 1SS270 D 901 Diode HZS7L C2 D 902 Diode 1SR139 400 D 903 Diode 1SR139 400 D 904 Diode HZS7L A1 D 905 Diode 1SR139 400 D 906 Diode HZS6L B2 D 907 Diode HZS9L B3 D 908 Diode HZS9L A2 D 909 Diode 1SR139 400 D 910 Diode 1SR139 400 L 401 Inductor See Contrast table L 501 Ferri Inductor LAU2R...

Page 41: ...RS1 10S101J R 719 RS1 10S473J R 720 RS1 10S473J R 721 RS1 10S102J R 722 RS1 10S102J R 723 RS1 10S102J R 724 RS1 10S223J R 725 RD1 4PU472J R 726 RS1 10S222J R 901 RS1 10S473J R 902 RS1 10S223J R 903 RS1 10S223J R 904 RS1 10S473J R 905 RD1 4PU102J R 906 RD1 4PU473J R 907 RS1 10S473J R 908 RS1 10S472J R 909 RS1 10S332J R 910 RD1 4PU101J R 911 RS1 10S102J R 912 RS1 10S103J R 913 RS1 10S103J R 914 RS1 ...

Page 42: ...X1M ES are constructed same except for the following Part No KEH P490 X1M UC KEH P4950 X1M ES Symbol and Description KEH P4900 X1M UC FM AM Tuner Unit CWE1467 CWE1486 L401 Inductor LCTBR39K2125 Not used R401 Not used RS1 10S182J R405 Not used RS1 10S510J R512 RS1 10S0R0J Not used R648 Not used RS1 10S183J C506 Not used CKSQYB103K50 Circuit Symbol and No Part Name Part No Circuit Symbol and No Part...

Page 43: ... 16S332J R 241 RS1 16S202J R 243 RS1 16S183J R 244 RS1 16S392J R 247 RS1 16S123J CAPACITORS C 1 CCSQCH6R0D50 C 2 CCSRCK2R0C50 C 4 CCSRCH820J50 C 6 CCSRCH820J50 C 8 CKSRYB103K25 C 9 CKSQYB104K16 C 10 CCSRCKR50C50 C 11 CEJA1R0M50 C 12 CKSRYB222K50 C 13 CKSRYB222K50 C 14 CCSRCH220J50 C 15 CCSRCH6R0D50 C 16 CCSRCH8R0D50 C 17 CKSRYB222K50 C 18 CKSRYB103K25 C 19 CKSRYB222K50 C 20 CKSRYB222K50 C 21 CEJA1...

Page 44: ...Coil CTE1117 T 51 Coil CTC1159 CF 51 Ceramic Filter CTF1441 CF 52 Ceramic Filter CTF1441 CF 53 Ceramic Filter CTF1441 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 RESISTORS R 1 RS1 16S225J R 2 RS1 16S225J 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...

Page 45: ...6 CCSRCH101J50 C 217 CEJA1R5M50 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 CKSRYB333K16 C 246 CKSQYB473K16 C 250 CCSRCH471J50 Unit Number CWM...

Page 46: ... R 301 RS1 16S183J R 302 RS1 16S163J R 303 RS1 16S163J R 304 RS1 16S163J R 305 RS1 16S163J R 323 RS1 8S0R0J R 351 RS1 16S102J R 352 RS1 16S102J R 353 RS1 16S102J R 354 RS1 16S102J R 355 RS1 10S274J R 362 RS1 8S301J R 373 RS1 8S0R0J R 374 RS1 8S0R0J R 401 RS1 16S472J R 402 RS1 16S183J R 403 RS1 16S823J CAPACITORS C 251 CKSRYB331K50 C 252 CKSRYB331K50 C 253 CKSRYB331K50 C 254 CKSRYB331K50 C 255 CKSR...

Page 47: ... 4V GND MainAntenna Jack mV Meter 1 Oscilloscope DC Regulated Power Supply TUNER AMP UNIT 50 Ω 75Ω FM SSG Stereo Modulator 50Ω 37 5Ω Antenna Plug Dummy Antenna DECK 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 48: ...8 1 M 5 98 1 T31 mV Meter 1 Maximum STEREO MODE ARC 6 98 1 S 40 98 1 VR154 mV Meter 1 Separation 5dB STEREO MODE FM ADJUSTMENT ES MODEL Modulation M MONO MOD 400Hz 30 22 5kHz Dev or 400Hz 100 75kHz Dev S STEREO MOD 1kHz L or R 30 20 25kHz 7 5kHz Dev NOTE Before proceeding to further adjustments after switching power ON let the tuner run for ten minutes to allow the circuits to stabilize FM SSG Dis...

Page 49: ...raight Remove the Tuner Amp Unit Remove the Case not shown 1 Remove the two screws 2 Remove the Case Remove the Cassette Mechanism Module not shown 1 Remove the four screws 2 Disconnect the connector and then remove the Cassette Mechanism Module Remove the Panel Unit Fig 1 Disengage the stopper at two locations indi cated by arrow Remove the Panel Unit Fig 1 Fig 2 Panel Unit Tuner Amp Unit Cassett...

Page 50: ... Front out_R Rear out_R FIE_R STB IN4 _R DATA Isolator circuit Primary volume Anti Alias filter Treble Anti radiation filter Middle Bass Loudness volume FIE Fader volume Secondary volume Zero cross detect circuit Primary volume Anti Alias filter Middle Treble Bass Isolator circuit Anti radiation filter Loudness volume Zero cross detect circuit Fader volume Secondary volume FIE Digital block Auto Z...

Page 51: ...tput 31 CM O C Cassette mechanism capstan motor control output 32 NC Not used 33 VSS GND 34 SC2 O C Cassette mechanism sub motor control output 35 SC1 O C Cassette mechanism sub motor control output 36 MS I Cassette mechanism MS sense input 37 mcmute I Cassette mechanism mute input 38 mtl I Metal sense input 39 NC Not used 40 n R O C Normal reverse output 41 PLAY O C Tape MS filter select output 4...

Page 52: ...tion PE5086A 80 1 20 21 40 41 60 61 Pin No Pin Name I O Format Function and Operation 71 GND GND 72 NC Not used 73 TESTIN I Test program mode input 74 AVDD A D converter analog power supply VDD 75 AVREF0 I A D converter standard voltage input 76 SL I Signal level input 77 78 MODEL2 1 I Model select input 79 80 NC Not used Format Meaning C C MOS ...

Page 53: ...REM I Remote control reception 18 RXD I System micro computer UART communication data input 19 rst I System reset 20 TXD O System micro computer UART communication data output 21 MODA GND 22 X0 Crystal oscillator connection pin 23 X1 Crystal oscillator connection pin 24 VSS GND 25 26 KD3 4 I Key data input 27 28 KS6 5 O Key strobe output 29 55 SEG39 13 O LLCD segment output 56 VCC Power supply 57 ...

Page 54: ...47 KEH P490 P4900 P4950 7 2 2 DISPLAY CAW1563 SEGMENT COMMON ...

Page 55: ...hite To system control terminal of the power amp or Auto antenna relay control terminal Max 300 mA 12 V DC Power amp sold separately To vehicle metal body Rear speaker Front speaker Black ground Red Yellow White White black Gray Gray black Green Green black Violet Violet black Rear output Fuse Left Right System remote control Front speaker Rear speaker Rear speaker Rear speaker Perform these conne...

Page 56: ...ontrol terminal of the power amp or Auto antenna relay control terminal Max 300 mA 12 V DC Power amp sold separately To vehicle metal body Rear speaker Front speaker Black ground Red Yellow White White black Gray Gray black Green Green black Violet Violet black Rear output Fuse Left Right System remote control Front speaker Rear speaker Rear speaker Rear speaker Perform these connections when usin...

Page 57: ...minal of the power amp or Auto antenna relay control terminal Max 300 mA 12 V DC 16 Power amp sold separately 6 To vehicle metal body 20 Rear 19 Front 5 Black ground 7 Red 9 Yellow 21 White 22 White black 23 Gray 24 Gray black 25 Green 26 Green black 27 Violet 28 Violet black 2 Rear output 11 Fuse 15 System remote control 17 Left speaker 18 Right speaker 19 Front 20 Rear 20 Rear 20 Rear 30 Perform...

Page 58: ...OCK button BAND button DISPLAY button EQ button AUDIO button button PAUSE button Press once to pause play 5 2 3 buttons CD button Press once to select a CD TAPE button Press once to select a tape BAND button TUNER button Press once to select the tuner ATT button This lets you quickly lower volume level by about 90 Press once more to return to the original volume level KEH P490 X1M UC ONLY ...

Page 59: ...en the AUX external input is set to OFF When this product s blue white lead is connected to the car s Auto antenna relay control terminal the car s Auto antenna extends when this product s source is switched ON To retract the antenna switch the source OFF 2 Raise or lower the volume 3 Turn the source OFF Hold for 1 second Each press changes the Source Basic Operation of Tuner Manual and Seek Tunin...

Page 60: ... Track Search and Fast Forward Reverse You can select between Track Search or Fast Forward Reverse by pressing the 2 3 button for a different length of time Track Search 0 5 seconds or less Fast Forward Reverse Continue pressing Disc Number Search for 6 Disc 12 Disc types You can select discs directly with the 1 to 6 buttons Just press the number corresponding to the disc you want to listen to Not...

Page 61: ... sec for C 60 Wow flutter 0 09 WRMS Frequency response 30 16 000 Hz 3 dB Stereo separation 45 dB Signal to noise ratio 61 dB IHF A network FM tuner KEH P490 X1M UC KEH P4900 X1M UC Frequency range 87 9 107 9 MHz Usable sensitivity 11 dBf 1 0 µV 75 Ω mono S N 30 dB 50 dB quieting sensitivity 16 dBf 1 7 µV 75 Ω mono Signal to noise ratio 70 dB IHF A network Distortion 0 3 at 65 dBf 1 kHz stereo Freq...

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