Kenwood KDC-348U Service Manual

Hide thumbs Also See for KDC-348U:

Brochure & specs (12 pages)

Instruction manual (41 pages)

Instruction manual (112 pages)

Table of Contents

Quick Links

Summary of Contents for Kenwood KDC-348U

Page 1 CD RECEIVER KDC-348U/4751SD KDC-BT41U/BT648U KDC-U4549/U4549SD/U549BT KDC-X395/X695 SERVICE MANUAL © 2011-4 PRINTED IN JA PAN B53-0844-00 ( N ) 303 Tuner setting adjustment after replacing E2PROM After replacing E2PROM (IC203 on X34), tuner setting adjustment is needed. The adjustment is that to perform the “TUNER Setting Adjustment Mode” (Page 13).
Page 2 ELECTRIC UNIT (X34- ) ∗ ∗ J921 J701 J601 IC801 DC-CN PRE-OUT FRONT L/R MIC CN LX-BUS POWER IC REAR L/R FRONT/REAR/NF Q301 P-CON P-CON P-ANT P-ANT BU DET BU3.3V BU-DET W551 OEM RC OEM RC Q707,708 MUTE MUTE Q701-706 Q102 ILLUMI ILLUMI...
Page 3: Block Diagram
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 BLOCK DIAGRAM MOTHER CD PLAYER UNIT (X32-6250-02) BOARD DPU1 (X34- ) SIGNAL A/B/C/E/F SRAM STB SRAM STB BUCK BUCK RF AMP VREF SERVO PIO0 PIO0 PROCESSOR FO COIL MP3 DECODER FO OUT LEVEL SHIFT FO OUT MRST MRST...
Page 4: Components Description
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-696x-xx) Ref. No. Application / Function Operation / Condition / Compatibility Power Supply IC Outputs 5Vx2, 8V, 8.3V, 10.3V, P-CON, P-ANT. IC21 3.3V AVR IC Power supply for BU+3.3V to μ-COM. IC51 SW REG Power supply for D+5.1V to USB and panel.
Page 5 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 COMPONENTS DESCRIPTION ● CD PLAYER UNIT (X32-6250-02) Ref. No. Application / Function Operation / Condition / Compatibility Driver for focusing & tracking coil, driver for sled & spindle motor, and operation 4ch BTL Driver for disc loading & ejection.
Page 6: Microcomputer's Terminal Description
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 MICROCOMPUTER’S TERMINAL DESCRIPTION ● System μ-COM : IC201 (X34- : ELECTRIC UNIT) Truth Value Pin No. Pin Name Application Processing / Operation / Description Table Not used Connects to GND even when A/D converter is AVSS Reference GND for A/D converter...
Page 7 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table ZDET IN 0-bit mute request H: Mute request, L: Normal play CD RST CD mechanism reset H: Normal, L: Reset CD CCE...
Page 8 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table L: Mute ON (Time constant solo setting: 0.5ms), MUTE AFS I/O AFS mute Hi-Z: Normal STANDBY source or momentary power down: L,...
Page 9 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table High frequency resonator connection Main clock: 12MHz DVCC3 Power supply DVSS/REGVSS USB D+ I/O USB data connection USB D- I/O USB data connection...
Page 10: Test Mode
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE 1. Panel SEARCH ACCENT RETURN 2. How to enter each Test Mode Test Mode name Operation Production Test Mode Press and hold [1] key and [3] key and reset. In the STANDBY source, while pressing and holding [2] key, press [6] key for 7 seconds.
Page 11: Power Off
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE Details Volume 30 (-10dB) BASS BOOST/LOUD NATURAL Various setting value Fader/Balance Center DEMO Mode Setting AUX Setting ● Mode structure Some Test Modes change according to the current source. The following table shows the current source in Set and the related test mode status.
Page 12 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE USB model Source Condition Operation iPod inserted iPod SRC Other than iPod SRC iPod not inserted Invalid ■ Invalid Invalid iPod SRC ■ iPod By Hand Mode ● Mode content Syscon shall display the following information after entering this mode. The operation shown below shall be workable.
Page 13 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE ● Tuner Test Mode Speciﬁ cation The following display shall be indicated according to the TUNER status. Status Display content Details Communication to TUNER IC not available (indicated unless TUNER IC Normal Error the mode is in Clock Display Mode).
Page 14 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE 3) Status display during adjustment Status Display content Details When the adjustment value write-in to E2PROM (IC203 on X34) Adjustment success has been completed. xx: Level offset value (HEX) When the adjustment value write-in to E2PROM (IC203 on X34)
Page 15 “Data ﬂ ash clear” function, and to write the speciﬁ c values to initialize it to its factory default condition. Factory default condition • Clearing of the pairing information (FLASH memory of the BT module) • Clearing of the preset telephone numbers (EEPROM) • Writing “KENWOOD BT CD/R-3P1” in the friendly name (FLASH memory of the BT module)
Page 16: Service Test Mode
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE • Writing “0000” in the PIN code (FLASH memory of the BT module) *2: Perform internal LOOP-BACK inspection to check the connection of the built-in microphone (component). This mode is cleared by reset. (Last status is not retained.) ●...
Page 17 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE Operation Display content Details 00~50 are displayed in “xx”. For less than 1 hour, the display is indicated per 10 Power ON duration minutes. display 00001~10922 are displayed in “xxxxx”. MAX 10922 (hours) 0~50 are displayed in “xx”.
Page 18: Version Display Mode
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE 6. Version Display Mode ● How to enter the version display mode While pressing and holding [RETURN] key, press [DISP] key. ● Default condition when the mode is started Same as normal start-up. ● Mode structure Version display mode can be executed independent of the current source.
Page 19: Forced Update Mode
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TEST MODE ● Mode operation speciﬁ cation Operation Display content Details When wrong connection & DC error in other detection duration is detected DC ERR1dis- play When wrong connection & DC error in other detection duration is not detected Clear detection information when wrong connection &...
Page 20: Pc Board (Component Side View)
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT J601 X34-696x-xx (J76-0730-12) LX BUS PRE OUT IC801 R804 R807 11 12 8 J701 IC802 C813 C815 R810 C806 J921 C716 C715 C713 C714 R808 C711 C712 R806 R809 C809 IC601...
Page 21 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 C808 Q104 D106 R104 R105 R125 X34-696x-xx Ref. No. Address R122 W106 R115 R113 R110 R109 IC51 Q102 IC71 C103 R152 R114 R151 IC201 IC203 IC261 W101 IC301 W107 IC401 IC601 IC602 IC801 IC802 IC51 IC921 W105 D903...
Page 22 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-696x-xx (J76-0730-12) R123 TP10 C816 C817 C818 R121 TP316 R819 C814 C812 TP315 D103 TP18 D101 TP103 TP17 TP104 C415 C454 R452 R451 TP54 TP52 SEL1 SEL2 C915 C913 C914 IC21...
Page 23 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TP316 R819 C604 R604 X34-696x-xx D604 D606 L602 D609 L601 D607 Ref. No. Address IC21 D608 IC202 IC501 C417 IC901 IC902 C415 D501 C416 R402 C528 C536 C454 R526 R513 R452 Q301 A-DC-ERR C530 Q302 C526 C525 C532...
Page 24: Switch Unit
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 PC BOARD (COMPONENT SIDE VIEW) SYNTHESIZER UNIT SWITCH UNIT X15-1552-70 (J76-0737-12) X16-707x-xx (J76-0731-02) X16-707x-xx Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
Page 25 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 PC BOARD (FOIL SIDE VIEW) SYNTHESIZER UNIT SWITCH UNIT X15-1552-70 (J76-0737-12) X16-707x-xx (J76-0731-02) R105 C100 L2/R106 CP14 X16-707x-xx Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
Page 26 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 PC BOARD (COMPONENT SIDE VIEW) X32 B/2 12EJE CD PLAYER UNIT X32-6250-02 A/2 (J76-0556-12) 3.3V IOP- AGND RFRP BU1.5 D1.5V DGND S.GND D3.3V S.7.5V MOTOR ZDET SLED IN/EJECT SLED OUT/LOAD X32-6250-02 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
Page 27 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 PC BOARD (FOIL SIDE VIEW) X32 B/2 CD PLAYER UNIT X32-6250-02 A/2 (J76-0556-12) C101 X32-6250-02 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
Page 28 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 ∗ ∗ MIC I/F REAR PRE OUT FRONT ELECTRIC UNIT (X34-69xx-xx) ∗ J921 REAR/SUB J701 R610 TP643 4.7K TP642 IC601 F719 PATTERN FUSE3 D922 D921 ∗ ∗ REAR/SUB FRONT REAR ∗ ∗ C715 C716 C713 C714 C711 C712...
Page 29 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 1 2 3 ∗ LX BUS SPE-ANA J601 C454 IC451 TP93 REQ M 5.0V R451 C453 R454 SWREG5V R610 TP94 R455 2.5V 4.7K 2.5V TP92 Q92,93 IC601 5.0V TP104 R456 2.5V C451 2.5V D611 R458 10K Q451 C458...
Page 30 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 1 2 3 1 2 3 SWREG5V ∗ Q92,93 4V PRE OUT +B AVR BU3.3V BU3.3V BU3.3V W106 Q93,94 CONT 1000P ∗ R620 ∗ for 4V C211 R617 R203 PRE OUT 100K ∗ R616 TP103 ∗ WIRED REMO 3.3V...
Page 31 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TP315 POWER IC BU3.3V BU3.3V 7.1V 3.3V C808 ∗ R620 3.3V 3.3V ∗ R616 R807 R821 C807 3.3V R802 3.3V 3.3V IC802 3.3V 3.3V 5.0V 3.3V R822 BU DET ILLUMI DET 3.3V 3.3V 3.3V to 5V 3.3V ∗...
Page 32 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 to DC CORD F1 10A (F52-0023-05) FUSE TP315 TP16 TP316 TP10 3300u16 D801 R103 D101 TP17 ∗ D103 R110 R109 R101 R117 R102 4.7K 4.7K C106 C102 MUTE 0.022 TP18 R112 D105 R107 CONT R118 100K Q104 ∗...
Page 33 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 2SC4081 KTA1046-P DAP202U DA204U TC7SET08FU-F CAUTION : For continued safety, re place safe ty critical com po nents only with manufacturer’s rec om mend ed parts (refer to parts list). Indicates safety critical com po nents. To reduce the risk of electric shock,...
Page 34 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 ANODE CONNECTION SWITCH UNIT (X16-707x-xx) NAME 0.9V col3 col3 col3 col1 col1 col1 Q21-23 GRID KEY SCAN REVERSING TIMING DRIVER ADJUST CP14 0.01 ILL GND 3.2V PAN 3.3V PAN3.3V 3.3V SW 3.3V SW3.3V 10.2V LED+B LED+B LED+B USB D+...
Page 35 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 col5 col3 col1 col3 col1 col3 col1 col6 col4 col2 col4 col2 col4 col2 (3G) (2G) (1G) (1G-3G) CP11 AUDIO BAND CAUTION : For continued safety, re place safe ty critical com po nents only with manufacturer’s rec om mend ed parts (refer to parts list).
Page 36 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 CD PLAYER UNIT (X32-6250-02) (A/2) MECHA. (X92- ) SLED OUT /LOAD TP28 4ch BTL DRIVER 1.7V TP345 7.5V D1.5V POWVCC1 R58 100 TP26 LOADING & POWGND1 SLED IN SLED /EJECT TP346 MOTOR SLIN VO1- R59 200K SPDL+ VO1+...
Page 37 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 TP44 FCS- TP47 TRK- D3.3V TP46 TRK+ D1.5V TP45 FCS+ TP111 RFRP TP84 DPU1 TP49 1.5V (X92- ) TP39 TP43 PD OPTICAL 2.2M TP42 C+D PICKUP R6 1K DVSS3R TP72 F 0.2V 1.6V TP41 A AVSS3 1.7V TP40 B DVDD3R 3.3V...
Page 38 KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 EXPLODED VIEW (CD MECHANISM) : N09-6108-15 : N09-6426-15 : N09-6735-05 : N09-6737-15 : N09-6738-15 : N19-2335-14 : N35-2003-48 : N39-1720-48 (X32) DPU1 (X32) Parts with the exploded numbers larger than 700 are not supplied.
Page 39: Exploded View (Unit)
KDC-348U/4751SD/BT41U/BT648U /U4549/U4549SD/U549BT/X395/X695 EXPLODED VIEW (UNIT) DME1 : N80-2006-48 : N09-6358-05 : N09-6758-05 : N35-2610-48 : N80-2008-43 : N86-2604-43 : N86-2606-48 : N80-3008-48 : N83-3005-48 (X34) : N84-3014-48 W551 : N86-2606-48 : N89-3010-48 (X34) (X16-) (X34-) (X15-) Depends on the models. Refer to the parts list.
Page 40: Parts List
SPRING (COMPRESSION) D52 -55 B30-1788-05 LED (1608,WHITE) M3M1M2 GE40505-002A SPRING (DETACH) D52 -55 B30-3210-05 LED (1608,BLUE) K1E1E3 K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 41 RK73GB2A225J CHIP R 2.2M J 1/10W QLF0202-001 FLUORESCENT INDICATOR TUBE RK73GB2A102J CHIP R 1.0K J 1/10W K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 42: Electric Unit (X34-696X-Xx)
0.10UF C530 CK73GB1H102K CHIP C 1000PF ✽ C90-6990-05 ELECTRO 220UF 10WV C531 CC73GCH1H070D CHIP C 7.0PF K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 43 RK73EB2E000J CHIP R J 1/4W K3M3K J601 E56-0855-05 CYLINDRICAL RECEPTACLE K2K3M3 RK73EB2E000J CHIP R J 1/4W K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 44 J 1/4W K2K3M3 R241 RK73HB1J332J CHIP R 3.3K J 1/16W R608 RK73EB2E101J CHIP R J 1/4W KK1M2 K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 45 J 1/10W KK1E1 D701,702 MC2846-T111 DIODE K2K3M3 R905,906 RK73GB2A223J CHIP R J 1/10W M1 D701,702 MC2846-T111 DIODE K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 46: Mechanism Assy (X92-6370-04) Dxm-9B24W
K2K3M3 G02-1588-04 FLAT SPRING Q701-706 RT1N430M-T111 TRANSISTOR KK1M2 G13-1297-04 CUSHION Q701-706 RT1N430M-T111 TRANSISTOR K2K3M3 G13-1299-14 CUSHION K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 47 PUSH SWITCH X94-2090-00 SPINDLE MOTOR ASSY X94-2100-00 FEED MOTOR ASSY (LOAD/SLED) DPU1 X93-2280-00 OPTICAL PICKUP ASSY K: KDC-BT648U K1: KDC-X695 K2: KDC-X395 K3: KDC-348U Indicates safety critical com po nents. M1: KDC-U549BT M2: KDC-U4549SD M3: KDC-U4549 E1: KDC-BT41U E3: KDC-4751SD...
Page 48 USB interface ........(10.5 V — 16 V allowable): 14.4 V USB standard ........USB1.1/ 2.0 (Full speed) KDC-X395/KDC-348U ..(11 V — 16 V allowable): 14.4 V Maximum supply current ........... 500 mA Maximum current consumption ........10 A File system .............FAT16/ 32 Installation size (W ×...
Page 49 Weight ................1.3 kg WMA decode .....Compliant with Windows Media Audio SD card section (KDC-U4549SD only) KENWOOD follows a policy of continuous advancements Compatible physical format ....... Version 2.00 in development. For this reason specifications may be Maximum memory capacity .........32 GB changed without notice.
Page 50 Weight ................1.3 kg SD card section (KDC-4751SD only) Compatible physical format ....... Version 2.00 KENWOOD follows a policy of continuous advancements Maximum memory capacity .........32 GB in development. For this reason specifications may be File System ............FAT 16/ 32 changed without notice.

This manual is also suitable for:

Kdc-bt41u Kdc-bt648u Kdc-u4549 Kdc-u4549sd Kdc-u549bt Kdc-x395 ... Show all

Kenwood KDC-348U Service Manual

Quick Links

Related Manuals for Kenwood KDC-348U

Summary of Contents for Kenwood KDC-348U

This manual is also suitable for:

Table of Contents