Kenwood K-525 Service Manual
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Kenwood K-525 Service Manual

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COMPACT HI-FI COMPONENT SYSTEM
K-525
SERVICE MANUAL
Front view
Top view
S : Silver
BK : Black
COPYRIGHT © 2011 Kenwood Corporation of Japan, Limited
REMOTE CONTROL UNIT (x1)
[RC-F0513E]
(A70-1768-08)
DANGER:
Please do not lock at the laser beam directly
during repair or operation check.
WINDOW
(B10-5679-08)
TOP CASE L
(A01-4819-08) : BK
(A01-4821-08) : S
Accessories
FM indoor antenna
(x 1)
(T90-0938-08)
2011
4
KA014<Rev.001>
SERVICE MANUAL
©
B53-4095-00
GRILLE ASSY
(A60-2578-08) : BK
(A60-2600-08) : S
CASE HOLDER
TOP CASE R
(B07-2802-08) : BK
(A01-4818-08) : BK
(B07-2801-08) : S
(A01-4820-08) : S
Power Cord (x 1)
(E30-7418-08) : (E) type
(E30-7419-08) : (X) type
This product complies with the RoHS directive for the European market.
2011-4 PRINTED IN JAPAN
KA014<Rev.001>
FOOT
(J02-1602-08)
REAR CASE
(A80-4653-08)
Remote control batteries
[LR03 (AAA) x 2]
This product uses Lead Free solder.

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  • Page 1 (A01-4818-08) : BK (A01-4821-08) : S (B07-2801-08) : S (A01-4820-08) : S S : Silver BK : Black COPYRIGHT © 2011 Kenwood Corporation of Japan, Limited Accessories REMOTE CONTROL UNIT (x1) FM indoor antenna Power Cord (x 1) Remote control batteries...

  • Page 2: Memory Back Up Function

    K-525 Caution Dealer’s Lock 1. Setting To set the unit to Dealer's Lock, hold down the [STOP] key on The marking of products using lasers the main unit, and press the [POWER] key on the remote control unit. CD ejection is disabled.

  • Page 3: Rear View

    K-525 Checking Microcomputer versions (1) Turn ON the power. (2) Hold down the [STOP] key on the main unit, and press the [1] key on the remote control unit. (3) The versions of the MAIN Microcomputer and the CD MECHA Microcomputer are displayed for 2 seconds.
  • Page 4 MCLK SPDIF0 MCLK OPTICAL Digital Audio Receiver DIR_I2S_DOUT SDATA_IN0 LRCK0 IC105 (Cirrus Logic) SPDIF1 BCK0 PWM1+ D-Class AMP CD BLOCK PWM1- MCLK LC OUTPUT 20W×2ch Filter for CD MECHA:TANASHIN TN-2007 LRCK1 IC203 PICK-UP:JVC OPTIMA726A2E EACH (TI) DP/DM OSC101 H-Bridge BCK1 DSP : IC8 PWM2+ iPod...
  • Page 5 C315 FB120 R135 Q201 C151 C305 Q123 R296 R304 R303 R302 C347 FB118 R301 C180 R323 R300 C170 U-K525/ K-525 [Kenwood] C173 X201 C171 R214 C290 C172 P/S:7020-07012-000-1S X202 IC206 CP209 C276 2011.02.18 CP122 CP208 Main (SIDE B) CP209 CP122...
  • Page 6 K-525 Audio (SIDE A) FB634 R636 C632 R634 C634 R632 R639 C650 R641 R638 R637 C651 R633 C631 C635 R635 FB602 FB616 JK601 R659 C647 FB613 Q603 C649 FB611 C617 R612 R613 C618 FB612 C648 R611 C616 C673 C627 R680...
  • Page 7 K-525 Audio (SIDE B) JK605 JK606 JK601 FB634...
  • Page 8 K-525 Front (SIDE A) Front (SIDE B) RMC401 R412 R414 C410 C413 R461 R460 R404 R459 R458 R403 R457 R456 R455 R410 R454 R453 R452 R411 R451 R450 R449 R448 R447 R446 R445 R444 R443 C405 R442 R441 R440 R439...
  • Page 9 K-525 iPod (SIDE A) JK701 [ IPOD ] D702 D704 FB708 D703 C702 D706 D705 C701 R718 L701 Q702 R717 U-K525 / K-525 R702 R703 R721 R720 Q701 R701 R704 R722 R719 C707 P/S:7020-07014-000-0S 2010.10.18 Rev 4.0 FB712 FB711 FB710...
  • Page 10 K-525 CD (SIDE A) U-K525 / K-525 P/N:7020-07013-000-0S [CD] 2010.10.18 Rev 5.0 R166 IC15 C101 CN23 R178 R111 R124 R121 R183 R19 R187 R23 R189 R24...
  • Page 11 K-525 CD (SIDE B) CN23 R127 R104 R160 C145 R105 R102 R162 R137 R161 R136 R140 C131 Rev 5.0 C132 R135 U-K525/K525[CD] P/N:7020-07013-000-0S 2010.10.18 R149 R150 R156 R154 R159 R157 R155 R158 C151 R134 C138 C109 C105 C104 C110 R123...
  • Page 12 K-525 Main 1 IC104 C141 R162 C136 MA_4052_R_IN C140 R164 C137 C196 C187 R165 CP103 C135 MA_HP_R_OUT MA_4052_L_IN R163 MA_HP_L_OUT MA_HP_SELECT_IN MA_REC_R_OUT MA_REC_L_OUT MA_4052_R_IN C195 MA_4052_L_IN MA_4052_B MA_4052_A MA_SPDIF_DIN0 C182 MA_D-LINK_CTRL MA_VDD9_A MA_VCC5 MA_VCC33 MA_-VCC33 MA_-VCC33 MA_VCC33 MA_RDATA MA_RCLK MA_TUNED...
  • Page 13 K-525 MA_VDD9_A MA_VDD9_A MA_VCC9 MA_VCC9 MA_VCC5 MA_VCC5 MA_VCC33 MA_VCC33 IC104 MA_-VCC33 MA_-VCC33 MA_A-MUTE MA_A-MUTE MA_4052_A MA_4052_A MA_4052_B MA_4052_B MA_TST MA_TST MA_RDATA MA_RDATA MA_RCLK MA_RCLK C186 C144 MA_TUNED MA_TUNED MA_T_SDA MA_T_SDA MA_T_SCL MA_T_SCL MA_USB_DETECT MA_USB_DETECT MA_ADC_MCLK MA_ADC_LRCK MA_ADC_BCK MA_ADC_DOUT C182 IC106...
  • Page 14 K-525 Main 2 FB202 C219 MA_PWRSNS MA_MVCC33 C349 MA_+4.3V(VFD+) MA_VFD- C207 MA_-27V(VKK) MA_VD_GND FB203 MA_VCC5 MA_VCC9 MA_VCC33 C323 IC302 Q201 MA_PVDD20 AO_GND FB208 MA_M_GND R202 MA_PWR_CTRL C338 MA_VCC5 CP203 C339 C202 C332 C337 C327 MA_AMP_MCLK MA_DSP_MCLK MA_DSP_MCLK R203 MA_DAC_MCLK MA_DSP_BCK...
  • Page 15 K-525 FB218 MA_VDD9_A IC301 MA_PVDD20 C221 R229 R230 C222 IC303 AVSS C217 R228 C216 C316 R343 L205:1 FB204 MA_VCC33 R227 MA_SYSRST C223 CP201 C337 C324 C325 R340 R218 MA_TASPD C227 L205:2 C228 R327 R341 MA_SDATA2 MA_TASMUT C231 R260 MA_SDATA1 MA_AMP_LRCK...
  • Page 16 K-525 Audio SF101 FB616 R640 JK601 C632 R632 R636 FB601 IC602:B C601 C636 FB602 C602 SF102 IC602:A C637 C633 R637 R633 FB634 FB617 R649 C638 FB603 R645 R648 JK602 IC603:B C644 FB604 IC603:A C640 C643 R651 R650 JK603 FB605 ZD601...
  • Page 17 K-525 FB616 R640 VDD9_JK IC602:B C636 IC602:A VCC5_JK C637 FB617 R649 VDD9_JK IC601 C621 C622 R615 C623 R624 C628 C626 C619 R616 C624 IC603:B R618 R625 C644 C629 R619 C620 C627 R630 R623 R631 IC603:A C640 JK_D-LINK_CTRL JK_SPDIF_DOUT0 VCC33_JK JK_TUNER_L_OUT...
  • Page 18 K-525 Display CN402 LCD_VFL+ LCD_VFL- C415 C414 R409 R401 CN401 R402 R405 R406 R407 R408 C404 Q401 Q402 LD401 R414 RMC401...
  • Page 19 K-525 FL401 LCD_GR1 LCD_SG35 R401 LCD_SG34 LCD_SG33 LCD_SG32 LCD_SG31 LCD_SG30 IC401 LCD_SG29 LCD_SG28 LCD_SG27 LCD_SG26 LCD_SG25 LCD_SG24 LCD_SG23 LCD_SG22 LCD_SG21...
  • Page 20 K-525 iPod IPD_D+ IPD_D- FB706 L701 JK701 FB703 IPD_D+ IPD_VBUS IPD_D- IPD_ACC_ID R718 R717 IPD_VBUS Q701 IPD_ACC_ID FB708 R719 IPD_ACC_PW IPD_ACC_PW R709 IPD_RX IPD_TX IPD_ACC_DE IPD_IPOD_GND IPD_IPOD_AGND Q702 IPD_ACC_DE IPD_GND_SENSE R721 R722 IPD_IPOD_GND CN501 To Main 2 SW501 SW505 CP208...
  • Page 21 K-525 CN702 IPD_IPOD_SGND R720 IPD_D+ IPD_D- CN703 R715 FB709 IPD_GND_SENSE IPD_GND_SENSE1 FB710 IPD_IPOD_AGND IPD_IPOD_AGND1 FB711 IPD_IPOD_EN IPD_IPOD_GND IPD_IPOD_GND1 FB712 FB707 IPD_IPOD_EN IPD_IPOD_EN1...
  • Page 22 K-525 3V3DP FE_VREF BUS01 FE_MD_LAS C145 FCO- FCO+ TKO+ TKO- R160 R161 FE_LD_LAS R162 FE_LD1_LAS TP15 GND(GR) TP16 INNER(GR) INNER_SW R109 3V3VIN TP17 SLO-(YL) SLO- R128 TP18 SLO+(OR) SLO+ EJECT_SW TP19 R103 SW2(WH) EJECT_SW TP20 GND(BR) R105 TP21 SW1(RE) INSERT_SW...
  • Page 23 K-525 IC14 DR_DQ0 DR_DQ15 DR_DQ1 DR_DQ14 DR_DQ2 DR_DQ13 DGND DR_DQ3 DR_DQ12 DR_DQ4 DR_DQ11 DR_DQ5 DR_DQ10 DR_DQ6 DR_DQ9 3V3DD DR_DQ7 DR_DQ8 LDQM DR_WE UDQM DR_CAS DR_CLK DR_RAS DR_CKE TP10 GPB10 GPB9 DR_BA0 DR_AQ11 DR_D12 DR_DQ12 DR_BA1 DR_AQ9 DR_D13 DR_DQ13 DR_D14 DR_DQ14...
  • Page 24 (E)TYPE (X)TYPE...

  • Page 25: General Assembly

    K-525 General Assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local A60-2578-08 GRILLE ASSY K-525-BK A60-2600-08 GRILLE ASSY K-525-S A21-5548-08 PANEL BOTTOM K-525-BK A21-5549-08 PANEL BOTTOM K-525-S A80-4653-08 REAR CASE K29-8795-08 FUNCTION BUTTON K-525-BK K29-8796-08 FUNCTION BUTTON...

  • Page 26: Electrical Parts List

    K-525 Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] C163 CK73GB1H103K C CAPACITOR 0.01uF 50V  Symbol No. Part No. Part Name Description Local C164 C90-5906-08 E CAPACITOR 220uF 16V C165...
  • Page 27 K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C293 CK73GB1H104K C CAPACITOR 0.1uF 50V C227 C90-5910-08 C CAPACITOR 0.22uF 50V C228 C90-5908-08 C CAPACITOR 1uF 50V C294 C90-5903-08 E CAPACITOR...
  • Page 28 K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R135 RK73GB2A154J RESISTOR 150kΩ 1/16W R208 RK73GB2A222J RESISTOR 2.2kΩ 1/16W R209 RK73GB2A102J RESISTOR 1kΩ 1/16W R136 RK73GB2A103J RESISTOR 10kΩ 1/16W R137...

  • Page 29: Audio Board

    K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R273 RK73GB2A101J RESISTOR 100Ω 1/16W R343 RK73GB2A151J RESISTOR 150Ω 1/16W R274 RK73GB2A101J RESISTOR 100Ω 1/16W R344 RK73GB2A151J RESISTOR 150Ω 1/16W R275...
  • Page 30 K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C604 CC73GCH1H101J C CAPACITOR 100pF 50V C671 CK73GB1H104K C CAPACITOR 0.1uF 50V C605 C90-5903-08 E CAPACITOR 100uF 16V C672 CK73GB1H104K C CAPACITOR 0.1uF 50V...

  • Page 31: Front Board

    K-525 Front board  Symbol No. Part No. Part Name Description Local Block No. [0][3] R661 RK73GB2A103J RESISTOR 10kΩ 1/16W R663 R92-4882-08 RESISTOR 2.2kΩ 1/10W  Symbol No. Part No. Part Name Description Local R664 R92-4840-08 RESISTOR 470kΩ 1/16W R665...

  • Page 32: Ipod Board

    K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R443 RK73GB2A101J RESISTOR 100Ω 1/16W R720 RK73GB2A472J RESISTOR 4.7kΩ 1/16W R444 RK73GB2A101J RESISTOR 100Ω 1/16W R721 RK73GB2A472J RESISTOR 4.7kΩ 1/16W R445...
  • Page 33 K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local CC73GCH1H100D C CAPACITOR 10pF 50V C109 CK73GB1C105K C CAPACITOR 1uF 16V CC73GCH1H100D C CAPACITOR 10pF 50V C110 CK73GB1C105K C CAPACITOR 1uF 16V...
  • Page 34 K-525  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local RK73GB2A103J RESISTOR 10kΩ 1/16W CN23 E41-4029-08 CONNECTOR 22PIN RK73GB2A103J RESISTOR 10kΩ 1/16W C90-5914-08 E CAPACITOR 33uF 25V R110 RK73GB2A153J RESISTOR 15kΩ 1/16W...
  • Page 35 K-525 <MEMO>...

  • Page 36: Specifications

    • The system may be unable to manifest the full performance Recording output (REC OUT LEVEL 0)..900 mV / 10 kΩ in an extremely cold place (under the water freezing temper- ature). Kenwood Corporation [Tuner section] FM tuner Tuning frequency range ....87.50 MHz ~ 108.00 MHz Antenna impedance........75 Ω...

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