The AEL (accessible emission level )of the laser power output is less than CLASS 1 but the laser component is capable of emitting radiation exceeding the limit for CLASS 1. A specially instructed person should do servicing operation of the apparatus. DEH-2500UI/XNUC...
Page 3
CAUTION Danger of explosion if battery is incorrectly replaced. Replaced only with the same or equivalent type recommended by the manufacturer. Discord used batteries according to the manufacturer's instructions. DEH-2500UI/XNUC...
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting temperatures (hard to melt/easy to harden). The following lead-free solders are available as service parts: Parts numbers of lead-free solder: GYP1006 1.0 in dia. GYP1007 0.6 in dia. GYP1008 0.3 in dia. DEH-2500UI/XNUC...
2. SPECIFICATIONS 2.1 SPECIFICATIONS DEH-2500UI/XNUC CD player General System........Compact disc audio system Power source......14.4 V DC (10.8 V to 15.1 V allowable) Usable discs .......Compact disc Grounding system ....Negative type Signal-to-noise ratio....94 dB (1 kHz) (IHF-A network) Maximum current consumption Number of channels ...2 (stereo)
Page 7
Signal-to-noise ratio....62 dB (IEC-A network) Gain ......+6 dB to –24 dB Phase......Normal/Reverse LW tuner Frequency range ....153 kHz to 281 kHz Usable sensitivity....28 µV (S/N: 20 dB) Signal-to-noise ratio....62 dB (IEC-A network) Note Specifications and the design are subject to modifications without notice. DEH-2500UI/XNUC...
Page 8
Specifications and the design are subject to MP3 decoding format ..MPEG-1 & 2 Audio Layer 3 modifications without notice. WMA decoding format ..Ver. 7, 7.1, 8, 9, 10, 11, 12 (2 ch audio) (Windows Media Player) WAV signal format....Linear PCM & MS ADPCM (Non-compressed) DEH-2500UI/XNUC...
Item to be checked regarding audio Distortion Noise Volume too low Volume too high Volume fluctuating Sound interrupted 3.2 PCB LOCATIONS CD Core Unit (S11.6STD) Tuner Amp Unit Keyboard Unit A:DEH-2500UI/XNUC B:DEH-2500UI/XNEW5 C:DEH-2500UI/XMEW5 D:DEH-2550UI/XNES E:DEH-2550UI/XMES F:DEH-2550UI/XMES1 G:DEH-2590UI/XNID Unit Number QWM3458(A) Unit Number QWM3457(B,C)
CD Mechanism Module 3.4 CLEANING Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools: Portions to be cleaned Cleaning tools CD pickup lenses Cleaning liquid : GEM1004 Cleaning paper : GED-008 DEH-2500UI/XNUC...
In case of the above signal, the communication Source keys with Grille microcomputer may fail. operative If the time interval is not 300 msec, the oscillator may be defective. Source ON SYSPW <- H Pin 8 Completes power-on operation. (After that, proceed to each source operation) DEH-2500UI/XNUC...
: Servo-related errors CD Off, Eject, ACC Off, Back-up Off, Communication reset, Reset Load NG/Eject NG(50) : Reload, Eject, ACC Off, Back-up Off, Communication reset, Reset Failure in retried turning for ejection : CD On, Eject, ACC Off, Back-up Off, Communication reset, Reset DEH-2500UI/XNUC...
Page 16
NOT FOUND No related Transfer songs to more than maxi- use it. Turn the songs. the iPod. mum allowable ignition switch to current. OFF, then to ACC or ON and then connect only compliant USB storage devices. DEH-2500UI/XNUC...
Conf. LCD pattern 1 ILM(2) BAND Draw 3 (* And change ILM color) (If not have, ILM(1) light on) Conf. LCD pattern 2 ROTARY center Draw 4 ILM(1) Drawings Style Draw1 ALL light up Draw2 ALL light off Draw3 Draw4 DEH-2500UI/XNUC...
The screen gets still when entering this item. On (an initial value or On (state when setting value of default entering test mode) Switching to next display menu) by pressing “ 1 ” + “ 3 ” buttons together. DEH-2500UI/XNUC...
The display is continued until the power supply is turned OFF. If the power supply is turned ON again, the display is not changed. The upgrading using USB is disabled, so it is necessary to write programs in serial Flash using E10A. DEH-2500UI/XNUC...
When the power is turned on/off the gain of the RFAMP is reset to 0 dB. At the same time all the self-adjusting values shall return to the default setting. Do not do Tracking Servo Close before doing Focus Servo Close. (Because the overcurrent flows) DEH-2500UI/XNUC...
Slide the Tuner Amp Assy in the direction of the arrow. Lift off the Tuner Amp Assy from the Heat Sink side. The Tuner Amp Assy is fixed into the ditch. Disconnect the FFC and then remove the CD Mechanism Module. CD Mechanism Module Fig.2 DEH-2500UI/XNUC...
Page 23
Tuner Amp Unit Remove the two screws. Remove the two screws and then remove the Tuner Amp Unit. Fig.3 - Attention of removing (Fig.4) Don’t remove this screws excluding the dismantlement of the CD Mechanism Module. CD Mechanism Module Fig.4 DEH-2500UI/XNUC...
Page 24
1. Attach the button from the front side of the panel. Fig.7 2. Attach the spring to the arm as shown in the figure. The bended tip of the spring is set to this side. Hitch the spring to the groove. Fig.8 DEH-2500UI/XNUC...
Page 25
4. Fit the boss on the lower side of the arm in the lower hole of the panel, and then warp the rib on the panel in the direction shown in the figure and fit the boss of the arm in the panel. Fig.9 DEH-2500UI/XNUC...
Page 26
2. Be careful not to hold the solid line portions or the CRG mecha part or insert foreign substances, to prevent distortion. 3. When holding the sides of the upper chassis, do not apply excessive force to prevent distortion. (Approx. 8N or less) Handling OK Handling NG DEH-2500UI/XNUC...
Page 27
Fig 3 Fig 4 [Incorrect built-in state] The chassis is not nipped between Outer holder Normal built-in state the PU case and the PU rack. Rear end of feeding screw DEH-2500UI/XNUC...
1k ohms in series. The load and eject operation is not guarantied with the mechanism upside down. If the mechanism is blocked due to mistaken eject operation, reset the product or turn off and on the ACC to restore it. DEH-2500UI/XNUC...
Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the average angle. Hint Reloading the disc changes the clamp position and may decrease the "wobble". DEH-2500UI/XNUC...
The frequency of the clock signal is 600 kHz that is divided by 20th of the oscillation frequency of X601 (12MHz). The clock signal should be 600 kHz(- 25 Hz, + 25 Hz). If the clock signal is out of the range, the X'tal (X601) should be replaced with new one. DEH-2500UI/XNUC...
(In the case of no amount instructions,apply as you think it appropriate.) 9.1 PACKING 2500UI/XNUC 2500UI/XNEW5 2550UI/XNES 2500UI/XMEW5 2550UI/XMES 2500UI/XNEW5 2550UI/XMES1 2500UI/XMEW5 2590UI/XNID 2500UI/XNUC 2500UI/XNEW5 2550UI/XNES 2500UI/XMEW5 2550UI/XMES 2550UI/XNES 2550UI/XMES1 2550UI/XMES 2590UI/XNID 2550UI/XMES1 2590UI/XNID 2500UI/XNUC 2500UI/XNUC 2500UI/XNUC 2550UI/XNES 2550UI/XMES 2550UI/XMES1 2590UI/XNID DEH-2500UI/XNUC...
Page 33
13-3 Service Network See Contrast table (2) Handle QNC3021 Screw See Contrast table (2) (2) CONTRAST TABLE DEH-2500UI/XNUC, DEH-2500UI/XNEW5, DEH-2500UI/XMEW5, DEH-2550UI/XNES, DEH-2550UI/XMES, DEH- 2550UI/XMES1 and DEH-2590UI/XNID are constructed the same except for the following: Mark Description DEH-2500UI/XNUC DEH-2500UI/XNEW5DEH-2500UI/XMEW5 DEH-2550UI/XNES Cord Assy CDP1480...
Page 35
See Contrast table (2) Heat Sink See Contrast table (2) > Fuse (10 A) YEK5001 (2) CONTRAST TABLE DEH-2500UI/XNUC, DEH-2500UI/XNEW5, DEH-2500UI/XMEW5, DEH-2550UI/XNES, DEH-2550UI/XMES, DEH- 2550UI/XMES1 and DEH-2590UI/XNID are constructed the same except for the following: Mark Description DEH-2500UI/XNUC DEH-2500UI/XNEW5DEH-2500UI/XMEW5 DEH-2550UI/XNES Cord Assy CDP1480...
R805 AUXL R803 R806 SOURCE R807 R804 AUXR L801 NOTE : AUXGND Symbol indicates a resistor. DEH-2500UI/XNUC RGBST/ILMCLR2 No differentiation is made between chip resistors and DEH-2500UI/XNEW5 CTF17 discrete resistors. RGBCK/ILMCLR1 DEH-2500UI/XMEW5 US5V Symbol indicates a capacitor. USB5V CN1931 DEH-2550UI/XNES...
Page 39
R812 RGBCK/ILMCLR1 R961 RGBDT/DIMMER R813 2.2k DIAG MASK C330 Dim off 12.13 V R814 2.2k Q875 KYDT Dim on 8.03 V TPD1052F DPDT LTC043EEB R816 2.2k ROT0 ILMPW B.REM&A.ANT R817 2.2k ROT1 SWVDD L851 IC801 DPDT OUTY TC7SET08FUS1 SWVDD DEH-2500UI/XNUC...
1 V/div fRFAGC 500 mV/div 500 mV/div 500 mV/div 9TIN 500 mV/div Focus Search waveform Track Open waveform 100 Track Jump waveform (32 Track Jump x 3) Ref.: Ref.: Ref.: REFO REFO REFO Mode: Mode: Mode: TEST TEST TEST DEH-2500UI/XNUC...
Page 49
12 cm CD Eject operation 12 cm CD Eject operation Ref.: Ref.: Mode: Mode: Normal Normal 500 μs/div fRFAGC 1 V/div 9TIN 1 V/div 1 V/div aFIN 1 V/div μ Black Dot (800 m) during play Ref.: REFO Mode: Normal DEH-2500UI/XNUC...
The expression of the unit in this manual is shown by u instead of µ. Please do not make a mistake. Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. A:DEH-2500UI/XNUC IC 552 (A,106,24) IC BD2232G-G B:DEH-2500UI/XNEW5...
Page 59
R 309 (A,86,121) RS1/16SS103J R 638 (A,104,92) RS1/16SS473J R 311 (A,86,123) RS1/16SS473J R 312 (A,99,129) RS1/16SS103J R 639 (A,97,91) RS1/16SS472J R 401 (A,161,106) RS1/16SS221J R 640 (A,98,91) RS1/16SS472J R 402 (A,161,100) RS1/16SS751J R 643 (A,99,82) RS1/16SS104J R 644 (A,98,79) RS1/16SS101J DEH-2500UI/XNUC...
Page 60
C 307 (A,77,129) CKSRYB224K16 R 874 (A,147,58) RS1/10SR391J C 313 (A,83,130) CKSRYB105K16 R 875 (A,149,58) RS1/10SR473J C 314 (A,135,126) CKSRYB104K16 R 877 (A,121,27) RS1/16SS1R0J C 317 (A,60,129) (A,B,D,G) XCEVW100M16 (A,60,129) (C,E,F) CEVW100M16 R 878 (A,124,26) RS1/10SR473J R 879 (A,156,67) RS1/10SR122J DEH-2500UI/XNUC...
Page 61
C 461 (A,145,104) CKSSYB104K16 C 531 (A,91,93) CKSSYB104K10 C 913 (A,131,43) CKSSYB102K50 C 532 (A,93,93) CKSSYB104K10 C 914 (A,156,56) 1 000 uF/16 V CCH2024 C 915 (A,132,42) CKSRYB104K16 C 551 (A,13,121) (A,B,D,G) XCEVW221M16 C 916 (A,146,43) 4.7 uF CCG1201 DEH-2500UI/XNUC...
Page 62
(B,70,25) Ceramic Resonator 5.00 MHz CSS1547 CN701 (A,25,29) Connector CKS6146 CSD1168 S 1830 (A,37,20)Encoder(MULTI-CONTROL) CN1911 (A,156,25) Connector CKS6443 RESISTORS CN1931 (B,109,10) Connector CKS6451 R 101 (B,6,57) RS1/10SR2R4J JA1921 (A,155,9) Jack CKN1094 R 102 (B,8,57) RS1/10SR2R4J V 1801 (A,142,32) Segment LCD CAW2024 DEH-2500UI/XNUC...
Page 63
C 210 (B,33,43) CKSSYB104K10 C 211 (B,33,41) CKSSYB104K10 C 212 (B,22,28) CKSSYB104K10 C 213 (B,18,26) CKSSYB332K50 C 214 (B,17,26) CKSSYB473K16 C 215 (B,19,28) CKSSYB104K10 C 216 (B,12,33) CKSSYB182K50 C 217 (B,10,34) CCSSCH560J50 C 218 (B,10,36) CCSSCH4R0C50 C 219 (B,14,34) CKSSYB104K10 DEH-2500UI/XNUC...