Kenwood KD-CBT-838-U, KD-CBT-8141-U, KD-CBT-8041-U, KD-CBT-7539-U Service Manual

CD RECEIVER

KDC-BT7539U/BT8041U /BT8141UY/BT838U

SERVICE MANUAL

TDF SPARE-PANEL

MODEL TDF PANEL No. TDF NAME KDC-BT838U Y33-2970-60 TDF-BT89D KDC-BT8041U/BT8141UY Y33-2970-61 TDF-BT8041U KDC-BT7539U Y33-2970-62 TDF-BT7539U

KDC-BT7539U

(M type)

Bluetooth

KDC-BT8041U KDC-BT8141UY

(E type)

Bluetooth

KDC-BT838U

(K type)

Bluetooth

CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05

KDC-BT7539U

Panel assy (A64-4447-02)

KDC-BT8041U

Panel assy KDC-BT8041U: (A64-4445-02) KDC-BT8141UY: (A64-4446-02)

KDC-BT838U

DC cord (K,M type) (E30-6428-05)

DC cord (E type) (E30-6671-05)

Microphone (W01-1718-05)

Plastic cabinet assy (M type) (A02-2755-13)

Carrying case (K,E type) (W01-1710-05)

Screw set (K,M type) (N99-1757-15)

Remote controller assy (A70-2085-05)

RC-547

Compact disc (W01-1723-15)

Screw (K,M type) (N84-4016-48)

This product complies with the

SIZE AA BATTERY (Not supplied)

Lever (D10-7012-04) x2

This product uses Lead Free solder.

RoHS directive for the European market.

Panel assy (A64-4444-02)

Escutcheon (B07-3245-01)

Mounting hardware assy (J21-9716-03)

KDC-BT7539U/BT8041U

/BT8141UY/BT838U

(X34- )

FRONT-END

E2PROM

FST

DAC

CD MECHA

IC700

SUB u-COM (USB/CD)

iPod AUTHENTICATION

ROM CORR

MPX

RDS

for

AM+B

PON5V

SERVO+B A8V BU5V

BU3.3V

VBUS OC

+12dB/LPF

BT3.3V

ANT

A8V

BLUETOOTH MODULE

A8V

PON5V

IC451

FM/AM

MD(BT)

ROM CORR

LEVEL SHIFT

PON5V

TEL BOOK

A8V

MIC

SPE ANA

AGC

E-VOL

DC ERR

RDS DECODER

LX BUS

(K,M TYPE)

AUX

WININ OFFSET

MUTE 0,1,2

MUTE A MUTE C

I2S

RESET IC

RESET SW

ROTARY ENCODER

KEY KEY MATRIX

LED DRIVER

MUTE A

MUTE C

BU5V

RST

BU5V

IC601

MUTE 0,1,2

SYSTEM u-COM

EJE/SRC SW

PANEL OPEN/CLOSE DET

BACK

MUTE DRIVER

RST

ROM CORR

USB5V

PWIC MUTE

PREM/SW M

IC1

STBY

CONNECTOR

USB I/F

to USB u-COM

REMOTE CONTROL

PANEL u-COM

FL+B

USB5V

VBUS OC

SW DC/DC FL+B

HI-SIDE SW

PAN5V

(FL)

DC/DC (D5V)

PAN5V SW

PAN5V BT3.3V

PRE MUTE

SW16V

DC/DC (BT3.3V)

PON5V

BU5V

SERVO

ILL+B

SW16V

FDC

IC501

A8V

POWER IC

B.U/SERGE DET

P-CON

ANT-CON

ILLUMI

LINE MUTE

ACC DET

SW14V

A8V

SW5V

BU5V

SERVO +B+B

SW14V

ILL+B

SW14V

SW16V

AUX IN

USB

PRE OUT (F/R SW)

SP OUT (FL/FR/RL/RR)

BACK UP

P-CON

ANT CON

ILLUMI

LINE MUTE

ACC

WIRED REMO (K,M TYPE)

BLOCK DIAGRAM

(X16- )

LED

ILL+B

FL+B

BLOCK DIAGRAM

KDC-BT7539U/BT8041U /BT8141UY/BT838U

DPU1

ACB

FO COIL

TR COIL

DM1

LOADING & SPINDLE MOTOR

DM2

LOADING & SLED MOTOR

CD PLAYER UNIT (X32-6130-00)

IC4

SIGNAL A,B,C,E,F

APC

IC3

FO OUT

TR OUT

MOTOR DRIVER

DM OUT

FM OUT

VREF

FO OUT

TR OUT

DM OUT

FM OUT

CLOCK

16.934MHz

RF AMP

SERVO PROCESSOR

MP3 DECODER

WMA DECODER

AAC DECODER

1M bit SRAM

MOTHER BOARD (X34- )

SRAMSTB

BUCK

CCE

PIO0

MRST MRST

BSIF ST REQ

BSIF GATE

BSIF DATA

BSIF BCK

BSIF LRCK

R-ch

L-ch L-ch

C88,R82

CR FILTER

C87,R83

CR FILTER

SRAMSTB

BUCK

CCE

PIO0

BSIF ST REQ

BSIF GATE

BSIF DATA

BSIF BCK

BSIF LRCK

R-ch

Q13

REVERSAL CIRCUIT

IC5

SW1.5V REG

A8V

A.GND

BU5V P.ON

D GND

BU1.5V

ZDET MUTE L/R

A3.3V

AGND

SW1.5V

SW3.3V

IC6

IC11

SW3.3V REG

BU1.5V REG

D.GND

LOS-SW

12EJE-SW

LOE-SW

8EJE-SW

DRV MUTE

LO/EJ

MOTOR

S7.5V

S.GND

KDC-BT7539U/BT8041U /BT8141UY/BT838U

COMPONENTS DESCRIPTION

SWITCH UNIT (X16-638x-xx)

●

Ref. No. Application / Function Operation / Condition / Compatibility

IC1 Panel μ-COM

IC3 Remote Control IC Remote control receiver

Q1 Triangle Red LED SW Triangle LED lights when Q1’s base level goes Hi.

Q3 Blue LED SW (Vol left) Blue LED brightness control (PWM).

Q4 Blue LED SW (FL Top & ATT Key) Blue LED lights when Q4’s base level goes Hi.

Q5 Blue LED SW (FL under) Blue LED brightness control (PWM).

Q6 Blue LED SW (Multi function Key) Blue LED brightness control (PWM).

Q11 VFD Filament Voltage (-) VFD Cut-off bias (5-7.5V) supply.

ELECTRIC UNIT (X34-597x-xx)

●

Ref. No. Application / Function Operation / Condition / Compatibility

IC11 Audio8V Ref Power Supply Output 1.27V.

IC21 Regulator Power supply for IC700. (USB μ-com)

IC61 Switching Regulator Power supply for D5V. (to USB/PANEL)

IC71 Switching Regulator Power supply for FL+B. (to PANEL)

IC211 Hi-side SW Detection of USB Over Current

IC301 RDS decoder IC RDS decoder. (only E type)

IC331 OPAMP For AGC of the Spectrum Analyzer

IC451 Eelectrical Volume & Source Selecter Controls the source, volume, and tone.

IC501 Power IC Ampliﬁ es the front L/R and the rear L/R to 50W maximum.

IC601 System μ-com Controls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone.

IC602 Reset IC “L” when detection voltage goes below 3.6V or less.

IC603 ROM CORRECTION For Main program correcting emergency (EEP_ROM)

IC604 Muting logic IC Controls logic for muting.

IC605 Logic IC Level Shift (3.3V→5V)

IC607 Logic IC Level Shift (5V→3.3V)

IC608 EEP_ROM Memory of TEL BOOK for “Blue Tooth”

IC700 Sub μ-com USB/CD mechanism control

IC750 iPod Authentication Coprocessor iPod Authentication

IC751 ROM CORRECTION For USB program correcting emergency (EEP_ROM)

IC964 OP AMP +12dB Gain AMP & L.P.F for BT Output

IC965 Switching Regulator Power supply for BT3.3V. (to BT Module)

Q11 Audio8V AVR When Q13 & Q12’ go ON, A8V AVR outputs 8.0V.

Q12 Audio8V AVR SW When Q13’Base goes Hi, Supply current to IC11.

Q13 Audio8V AVR SW When Q13’Base goes Hi, Q12 & Q11 are ON.

Q21,22 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V.

Q23,24 PON5V When Q24’base goes Hi, PON5V outputs +5V.

Q31,32 SERVO+B AVR When Q33 & Q34’ go ON, AVR outputs 8V.

Q33,34 SERVO+B SW When Q34’Base goes Hi, Q33 is ON.

Q41,42 Illumination+B AVR When Q43 & Q44’ go ON, AVR outputs 10V.

Q43,44 Illumination+B SW When Q44’Base goes Hi, Q43 is ON.

Q51,52 SW16V When Q9 & Q34’ go ON, The voltage appears. (~16V)

Q71,72 FDC+B AVR When Q43 goes ON, AVR outputs 9V. (FL Filament)

Q81,82 FL+B SW When Q81’Base goes Hi, FL+B outputs 53V.

KDC-BT7539U/BT8041U /BT8141UY/BT838U

COMPONENTS DESCRIPTION

Ref. No. Application / Function Operation / Condition / Compatibility

Q121 B.U Detected SW When Q121’base gose Hi, B.U voltage is detected.

Q122 Surge Detect SW When Q122’base goes Hi, Surge voltage is detected.

Q123 ACC Detect SW When Q123’base gose Hi, Acc voltage is detected.

Q141,144 P-CON SW When Q144’base goes Hi, AVR outputs 14V.

Q142,143 P-CON Protect Protect Q141 by turning on when P-CON output is grounded.

Q145,146 Power Antenna SW When Q146’base goes Hi, power antenna switch outputs 14V.

Q151 Small-lamp Detect SW When Q151’base goes Hi, Small-lamp is detected.

Q321,322 AM+B SW When Q322’base gose Hi, AM+B is outputs.

Q331 AGC CONTROL (for SPE. ANA.) AGC GAIN CONTROL

Q401~406 Pre-out mute SW When a base gose Hi, Pre-out is set to mute.

Q407,408 Pre-out mute driver When a base gose Lo, mute driver is turned on.

Q602,603 LEVEL SHIFT System μ-com (5V) to Sub μ-com (3.3V)

Q680 Invertor When a base gose Hi, BT RESET is ON.

Q681,682 PANEL +5V SW When Q682’base gose Hi, PANEL +5V is outputs.

Q683,684 LEVEL SHIFT CD mechanism (3.3V) to Sysytem μ-com (5V)

Q702,703 3.3V_AVR_for_IC700 (ﬂ ash_type) When base of Q702 is “H”, 3.3V_On.

Q704 Decoder SRAM standby control Buffer When base of Q704 is “L”, SRAM_STBY.

Q705 CD “LOE_LIM” SW_Buffer When base of Q705 is “H”, Loading_End.

Q900 L.P.F L.P.F for BT Output (Rch)

Q901 L.P.F L.P.F for BT Output (Lch)

CD PLAYER UNIT (X32-6130-00)

●

Ref. No. Application / Function Operation / Condition / Compatibility

IC3 4ch BTL Driver

IC4 Servo DSP with built-in Audio DAC With built-in MP3/WMA/AAC decoder and 1M-bit-SRAM.

IC5 D1.5V REG. Power supply for digital 1.5V.

IC6 D3.3V REG. Power supply for digital 3.3V.

IC11 BU1.5V REG. Power supply for back-up 1.5V.

Q1 APC (Auto Power Control) Drives LD (Laser Diode).

Q13 Inverter Inverts ZDET signal.

D2 Laser Diode Protection Prevents reverse bias which is applied to laser. Laser destruction prevention.

D3,4 Static Electricity Countermeasure Prevents malfunction by static electricity.

Driver for focusing & tracking coil, driver for sled & spindle motor, and operation

for disc loading & ejection.

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

SYSTEM μ-COM: 30626FHP3A7GP (X34-597: IC601)

●

Pin No.

1 WIRED_REMO I Remote controller input Pulse width detection

2 RDS_QUAL I RDS decoder QUAL input terminal

2 NC O Not used (Models without RDS) Output is ﬁ xed to L

3 S_SYS_DATA O

3 CD_SI O CD mechanism serial output

4 S_SOC_DATA I

4 CD_SO I CD mechanism serial input

5 S_SOC_CLK I Host is SOC, CLK from SOC 400k

5 CD_CLK O 6E Mechanism serial clock output f=1MHz

6 BYTE

7 CNVSS

8 XCIN 32,768Hz

9 XCOUT 32,768Hz

10 RESET

11 XOUT 12MHz

12 VSS

13 XIN 12MHz

14 VCC1

15 NMI I Not used

16 RDS_CLK I RDS clock input terminal RDS clock input terminal

16 NC O Not used (Models without RDS) Output is ﬁ xed to L

17 PANEL_DET I

18 SRC_KEY I Source key input H: OFF, L: ON

19 RDS_DATA I RDS decoder DATA input terminal

19 NC O Not used (Models without RDS) Output is ﬁ xed to L

20 CD_DRIVEMUTE O CD motor driver mute output

20 NC O Not used (Models with USB) Output is ﬁ xed to L

21 EJECT_KEY I Eject key input H: OFF, L: ON

22 PANRST O Panel reset terminal H: Normal, L: Reset

23 CD_PIO0 I

23 NC O Not used (Models with USB) Output is ﬁ xed to L

24 PON_CD I/O CD mechanism power supply control

24 NC O Not used (Models with USB) Output is ﬁ xed to L

25 F_SEL1 I/O

25 NC O Not used (Models without BT) Output is ﬁ xed to L

26 PWIC_BEEP O Beep output 2kHz 1kHz

27 TUN_SCL I/O F/E I2C clock I/O terminal MAX 400k

28 TUN_SDA I/O F/E I2C data I/O terminal MAX 400k

29 PAN_SYS_DATA O

Pin Name I/O Application

Data from system μ-com to SOC

(System μ-com → SOC)

Data from SOC to system μ-com

(SOC → System μ-com)

Panel connector attach/detach detection

terminal

Command I/F

Communication request terminal from

mechanism DSP

SW_REG frequency setup terminal 1

(Models with BT)

Data from system μ-com to panel

(System μ-com → Panel)

Truth

value table

400k

H: Panel detach, L: Panel attach

H: Data request

H: CD mechanism power supply ON

Hi-Z: Power supply OFF

H: When receiving MW

Hi-Z: When receiving other frequency than MW

UART MAX 500k

Processing Operation Description

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

30 PAN_PAN_DATA I

31 PAN_SYS_REQ O

32 PAN_PAN_REQ I

33 BT_SYS_DATA O

33 NC O Not used (Models without BT) Output is ﬁ xed to L

34 BT_BT_DATA I

34 NC O Not used (Models without BT) Output is ﬁ xed to L

35 NC O Not used Output is ﬁ xed to L

36 PON_ILL I/O

37 NC O Not used Output is ﬁ xed to L

38 PON_PANEL I/O

39 ROMCOR_DET I ROM correction writing request H: Can re-write ROM correction (I2C open)

39 EPM I

40 CD_MOTOR O CD motor control terminal

42 CD_LOS_SW I CD loading detection terminal L: Ejection completed

43 CD_DISC12_SW I CD disk detection terminal (12cm) L: 12cm disc

44 PAN_SC_CON O

45 CD_LOEJ I/O CD motor control terminal

46 S_SOC_REQ I

46 NC O Not used (Models without USB) Output is ﬁ xed to L

47 SOC_SSTOP O SOC stop terminal H: Normal, L: Stop SOC

47 CD_SRAMSTB O

48 SOC_SRST O SOC reset terminal H: Normal, L: Reset (Bolero)

48 CD_RST O CD mechanism μ-com RST terminal H: Normal, L: Reset

49 S_SYS_REQ O

49 CD_CCE O

50 SOC_MUTE I DAC mute request H: Mute request, L: In normal condition

50 CD_MUTE I DAC mute request L: Mute request, H: In normal condition

51 PON_D5V I/O

52 PON I/O Power supply control terminal H: ON, Hi-Z: OFF

53 NC O

Pin Name I/O Application

Data from panel to system μ-com

(Panel → System μ-com)

Communication request from system

μ-com to panel (System μ-com → Panel)

Communication request from panel to

system μ-com (Panel → System μ-com)

Data from system μ-com to BT module

(System μ-com → BT module)

Data from BT module to system μ-com

(BT module → System μ-com)

Panel LED

FL bias power supply control

Power supply for panel μ-com

Supply FL_VDD

EPM input terminal for re-writing

Rewritable when EPM input terminal is “L”

when starting to re-write.

CD_LOE_LIM_SW

OEM_DISP_DATA

I CD detection terminal (Chucking SW) H: Loading completed, L: No disc

Panel operation control terminal

CE when re-writing system μ-com

Communication request from SOC to

system μ-com (SOC → System μ-com)

Decoder SRAM STANDBY control

(Models without USB)

Communication request from system

μ-com to SOC (System μ-com → SOC)

Command I/F

CD mechanism chip enable terminal

For USB /FDC 5V power supply control

terminal

I/O External display DATA External display

Not used (Models without BT/Models

without OEM_DISP)

Truth

value table

Processing Operation Description

UART MAX 500k

H: Power ON

Hi-Z: When panel is detach and power is OFF

H: Power ON

Hi-Z: When panel is detach and power is OFF

H: In normal condition, L: Stop the panel

L: SRAM standby (6E**)

H: ON, Hi-Z: OFF

Output is ﬁ xed to L

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

54 OEM_DISP_CLK I/O External display CLK External display

54 NC O

55 OEM_DISP_CE I/O External display control request External display

55 NC O

56 P_CON I/O PCON control terminal

57 ANT_CON O ANTCON control terminal

58 NC O Not used (Models without EXT_AMP) Output is ﬁ xed to L

59 ILLUMI_DET I Dimmer illumi detection L: ON, H: OFF

60 VCC2 -

61 MUTE_0 O EVOL FRONT MUTE control

62 VSS -

63 MUTE_1 O EVOL REAR MUTE control

64 MUTE_2 O IC-2 SW MUTE control

65 LINE_MUTE I Line mute detection TEL MUTE: 1V or less, NAVI MUTE: 2.5V or more

66 NC O Not used Output is ﬁ xed to L

67 BT_RST O BT module reset terminal H: Normal, H: BT reset

67 NC O Not used (Models without BT) Output is ﬁ xed to L

68 NC O Not used Output is ﬁ xed to L

69 MUTE_SA I/O

70 PWIC_DC_DET I DC offset detection terminal

71 ACC_DET I ACC detection ACC detected: L, ACC not detected: H

72 BU_DET I BU detection

73 LX_REQ_S I Communication request from slave unit

73 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

74 MUTE_AFS I/O

75 SDA/EVOL_SDA I/O

75 PBOOK_SDA I/O Data for BT telephone book memory

75 SDA/E2P_SDA I/O I2C data for ROM correction Communication speed 200-400k

76 SCL/EVOL_SCL I/O

76 PBOOK_SCL I/O Clock for BT telephone book memory

76 SCL/E2P_SCL I/O I2C clock for ROM correction Communication speed 200-400k

77 PWIC_MUTE O Power IC MUTE terminal

78 PWIC_STBY O Power IC standby terminal POWER ON: H, POWER OFF: L

Pin Name I/O Application

Not used (Models without BT/Models

without OEM_DISP)

Not used (Models without BT/Models

without OEM_DISP)

IC-2 MUTE_A control

Spectrum analyzer MUTE

IC-2 MUTE_C control

AFS MUTE

MUTE_AFS

(Not-used)

I Not used Input is ﬁ xed to Hi-Z

Data output from system μ-com to E.VOL

(System μ-com → E.VOL data output)

Output from system μ-com to EVOLCLK

(System μ-com → EVOLCLK output)

Truth

value table

Processing Operation Description

Output is ﬁ xed to L

POWER ON: H, POWER OFF: Hi-Z

STBY source: Hi-Z

TUNER source (including while receiving RDS): H

POWER OFF: L, STBY source: L

L: Mute ON, Independent setup of time constant 10ms,

H: In normal condition

L: Mute ON, Independent setup of time constant 10ms,

H: In normal condition

L: Mute ON, Independent setup of time constant 10ms,

H: In normal condition, Shall be shared with MUTE_

PRE_SW, IC2 shock noise measure

L: Mute ON, Independent setup of time constant 0.5ms,

Hi-Z: In normal condition

BU detected: L

BU not detected/Reduced voltage/Over-voltage: H

L: Mute ON, Independent setup of time constant 0.5ms,

Hi-Z: In normal condition

Communication speed 200-400k

While in STANDBY source, or momentary power down: L

While TEL MUTE: L

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

79 LX_REQ_M O Communication request to slave unit

79 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

80 LX_MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF

80 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

81 LX_CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF

81 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

82 LX_RST O Hardware-reset to slave unit H: Reset, L: Normal

82 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

83 MUTE_PRE_FR O External PREOUT_MUTE F/R 0bit, “L” during momentary power down

84 MUTE_PRE_SW O

85 PON_AM I/O AM+B power supply control terminal H: ON when receiving AM, Hi-Z: OFF in other cases

86 TUN_IFC_OUT I F/E IFC OUT input terminal H: Station found, L: Station not found

87 TUN_SMETER I S meter voltage detection terminal

88 RDS_NOISE I FM noise voltage detection terminal

88 NC O Not used (Models without RDS) Output is ﬁ xed to L

89 RDS_AFS_M I/O

89 NC O Not used (Models without RDS) Output is ﬁ xed to L

90 TYPE_1 I A/D 5 patterns

90 NC O Not used (Models without USB) Output is ﬁ xed to L

91 TYPE_2 I A/D 5 patterns

91 NC O Not used (Models without USB) Output is ﬁ xed to L

92,93 NC O Not used Output is ﬁ xed to L

94 AVSS -

95 NC O Not used Output is ﬁ xed to L

96 VREF -

97 AVCC -

98 LX_DATA_S I Data from slave unit

98 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

99 LX_DATA_M O Data to slave unit

99 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

100 LX_CLK I/O LX BUS clock

100 NC O Not used (Models not-supporting LX-BUS) Output is ﬁ xed to L

Pin Name I/O Application

External PREOUT_MUTE SUB

MUTE_2 shock noise measure

Time constant switching when noise is

detected

Truth

value table

Processing Operation Description

0bit, “L” during momentary power down

Use in addition to MUTE_2.

L: During AF search, Hi-Z: In normal condition

Refer to “Destination table”

Truth value table

Destination setting

Model name

KDC-BT838U 1 1 × 22k × 22k BT BLUE

KDC-BT8041U 1 5 × 22k 22k × BT BLUE

KDC-BT8141UY 1 4 × 22k 22k 47k BT BLUE

KDC-BT7539U 1 2 × 22k 47k 22k BT BLUE

Type1

Type2

Type1 (90) Type2 (91)

FeaturesPull up Pull down Pull up Pull down

R645 R644 R643 R642

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

SUB μ-COM: 92CD28AFG6VV1 (X34-597: IC700)

●

Pin No. Pin Name I/O Application Processing Operation Description

1 MRST - Reset L: RESET, H: Normal

2 MSTOP I

3 REQ_S I REQ signal from system μ-com L: Request

4 IPOD_RDY I RDY signal of iPOD authentication IC

5 BSIF_ST_REQ I BSIF

6 VCC - Power supply terminal (For PC port and PMC circuit)

7 XT1 -

8 XT2 -

9 PWE - External power supply control output L: STOP

10 DVSS - GND terminal

11 DVCC1B - Power supply terminal for built-in SRAM

12 RVOUT1 -

13 RVIN -

14 RVIN -

15 RVOUT2 -

16 DVCC1A - Power supply terminal for built-in logic

17 DVSS - GND terminal

18~22 NC O Not used Output is ﬁ xed to L

23 CD_CCE O Command I/F. CD mechanism chip enable terminal

24 CD_RST O RESET. CD mechanism RST terminal H: Normal, L: Reset

25 NC O Not used Output is ﬁ xed to L

26 DVSS - GND terminal

27 DVCC3A - Power supply terminal for peripheral I/O

28 CD_REQ I

29 CD_SRAMSTBY O Decoder SRAM STANDBY control L: SRAM standby (6E**)

30 CD_DRIVEMUTE O CD motor driver mute output

31 CD_PON O CD mechanism power supply control output H: Power ON (6E**), Hi-z: Power OFF

32~43 NC O Not used Output is ﬁ xed to L

44 DVSS - GND terminal

45 DVCC3A - Power supply terminal for peripheral I/O

46~61 NC O Not used Output is ﬁ xed to L

62 DVSS - GND terminal

63 DVCC3A - Power supply terminal for peripheral I/O

64 NC O Not used Output is ﬁ xed to L

65 ZDET_IN I ZDET. 0Bit Mute request terminal L: Mute request, H: In normal condition

66 CD_MUTE O Mute request to system μ-com L: Mute request, H: In normal condition

67 REQ_M O REQ signal to system μ-com L: Request

STOP signal from system μ-com (Momentary power down detec-

tion / Recovery to low power consumption mode)

Low frequency oscillator connection terminal

Sub-clock 32.768kHz

Low frequency oscillator connection terminal

Sub-clock 32.768kHz

Built-in regulator 1.5V output

(Flash version does not output voltage)

Built-in regulator power supply input

(Flash version has power supply terminal).

Built-in regulator power supply input

(Flash version has power supply terminal).

Built-in regulator 1.5V output

(Flash version does not output voltage)

Command I/F

Communication request terminal from mechanism DSP

H: Normal, L: SOC stop

H: Data request

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application Processing Operation Description

68 IPOD_RST O RESET

69 BOOT I For writing data in Flash

69,70 NC O Not used Output is ﬁ xed to L

71 BSIF_LRCK - BSIF

72 AM1 - Operation mode: Fixed to “1”.

73 X2 -

74 DVSS - GND terminal

75 X1 -

76 DVCC3A - Power supply terminal for peripheral I/O

77 USB_OC I USB over current detection L: Detected, H: Normal

78 USB_PON O USB PON output

79 USB_D+ - USB data connection terminal

80 USB_D- - USB data connection terminal

81 AM0 - Operation mode: Fixed to “1”

83 DVSS - GND terminal

84 DATA_M O Serial I/F with system μ-com (Sending)

85 DATA_S I Serial I/F with system μ-com (Receiving)

86 CLK O Serial I/F with system μ-com (Clock output) f=1M or less

87 CD_SO O Command I/F. Serial I/F (Sending)

87 FLSH_UO O For writing data in Flash

88 CD_SI I Command I/F. Serial I/F (Receiving)

88 FLSH_UI I For writing data in Flash

89 CD_CLK O Command I/F. Serial I/F (Clock output) f=1MHz, L during other source

90 ROMCOR_SDA I/O E2PROM I2C data I/O terminal for ROM correction

90 IPOD_SDA I/O I2C iPOD authentication data I/O terminal

91 ROMCOR_SCLK I/O E2PROM I2C clock output terminal for ROM correction

91 IPOD_SCLK I/O I2C iPOD authentication clock output terminal f=80kHz

92 BSIF_BCK - BSIF L during other source

93 BSIF_DATA - BSIF L during other source

94 BSIF_GATE O BSIF

95 DVCC3A - Power supply terminal for peripheral I/O

96 NC I Not used

96 ROMCOR_DET I ROMCOR writing detection H: Writing

97~99 NC I Not used

100 DVSS - GND terminal

CD_LOE_LIM_SW

High frequency oscillator connection terminal. Main-clock 9.00MHz

I CD detection terminal (Chucking SW) L: Loading completed, H: No disc

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

PANEL μ-COM: 30624MWPB81GP/30626MJPA23GP (X16-638: IC1)

●

Pin No. Pin Name I/O Application

1 REMO

2 NC - Not used Output L ﬁ xed

3 FL SI1 O FL display serial data output Pulse output

4 NC - Not used Output L ﬁ xed

5 FL CLK O FL display serial clock output

6 BYTE - GND

7 CNVSS -

8,9 NC - Not used Output L ﬁ xed

10 RESET - Reset

11 XOUT - Resonator 12MHz

12 VSS - GND

13 XIN - Resonator 12MHz

14 VCC1 - Power supply (5V) Connects PAN5V

15 NMI I Not used Input ﬁ xed

16~19 NC - Not used Output L ﬁ xed

21 NC - Not used Output L ﬁ xed

22 FL BK O FL display blanking control H: FL display OFF, L: FL display ON

23 FL LAT O FL display latch control H: Data through, L: Data latch

25 NC - Not used Output L ﬁ xed

27,28 NC - Not used Output L ﬁ xed

29 PAN DATA

30 SYS DATA

31 SYS REQ I System μ-COM communication request input H: Data communicated

32 PAN REQ O Panel communication request output H: Data communicatied

33 FL SI2 O FL display serial data output Pulse output

34 NC - Not used Output L ﬁ xed

35 CLK IN I/O FL display serial clock input Inputs FL display clock

36~38 NC - Not used Output L ﬁ xed

39 ROMCOR DET I ROM correction writing mode

39 EPM I For rewriting in ﬂ ash ROM (EPM) Input ﬁ xed

40~43 NC - Not used Output L ﬁ xed

44 FLASH CE I For rewriting in ﬂ ash ROM (CE)

45,46 NC - Not used Output L ﬁ xed

LED CONT RTY2

LED CONT

BLUE

LED CONT UNDEROLED side luminescence (Under FL display) PWM output

LED CONT RED

LED CONT RTY1

LED CONT GREEN

LED CONT FLTOP

I Remote control signal input Pulse width detection

O LED rotary (Multi-key side) PWM output H: LED ON, L: LED OFF

O Vari blue PWM output H: LED ON, L: LED OFF

O Vari RED PWM output H: LED ON, L: LED OFF

O LED rotary (VOL side) PWM output H: LED ON, L: LED OFF

O Vari GREEN PWM output H: LED ON, L: LED OFF

O Data transmission from panel

I Data reception from system μ-COM

I/O LED side luminescence (Above FL display) SW H: LED ON, Hi-Z: LED OFF

Truth

value table

Processing Operation Description

H: Except when data is written

(Including STANDBY)

Being controlled by system μ-COM

H: Normal, L: Reset

H: LED ON, L: LED OFF

H: Authorization to rewrite in ROM correction

(I2C opened)

KDC-BT7539U/BT8041U /BT8141UY/BT838U

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Application

48 LED CONT TRI I/O Triangle LED luminescence SW H: LED ON, Hi-Z: LED OFF

49,50 NC - Not used Output L ﬁ xed

51 SDA I/O

52 SCL

53~55 NC - Not used Output L ﬁ xed

56 ROTALY2 CW

57 ROTALY2 CCW

58 ROTALY1 CW

59 ROTALY1 CCW

60 VCC2 - Power supply (5V) Connects PAN5V

61 NC - Not used Output L ﬁ xed

62 VSS - GND

63~70 NC - Not used Output L ﬁ xed

71 SC CON I

72 NC - Not used Output L ﬁ xed

73 KR2

74 KR1

75 NC - Not used Output L ﬁ xed

76 KS1

77 KS2

78 KS3

79 KS4

80 KS5

81~90 NC - Not used Output L ﬁ xed

91 SA RST

92 SA CLK O Clock output for spectrum analyzer

93 SA IN I Data input for spectrum analyzer

94 AVSS - GND

95 NC - Not used Output L ﬁ xed

96 VREF - A/D analog reference voltage Connects PAN5V

97 AVCC - Power supply (5V) Connects PAN5V

98~100 NC - Not used Output L ﬁ xed

Data transmission and reception for ROM correction

I/O Clock for ROM correction Output except when clock data is read

I Rotary (Multi key) B input

I Rotary (Multi key) A input

I Rotary (VOL) B input

I Rotary (VOL) A input

System μ-COM communication

Panel operation control

I Key return input

I/O Key scan output

O Reset output for spectrum analyzer H: Reset released, L: Reset

Truth

value table

Processing Operation Description

Output except when data is read

Pulse width detection

1-pulse/2-click, 15-pulse/360°

Pulse width detection

1-pulse/2-click, 15-pulse/360°

Pulse width detection

1-pulse/2-click, 15-pulse/360°

Pulse width detection

1-pulse/2-click, 15-pulse/360°

H: Panel operated,

L: Panel operation stopped

Switches between output-L and Hi-Z

Truth value table

KEY MATRIX

KR1 (Pin 74) KR2 (Pin 73)

KS1 (Pin 76) TI AM

KS2 (Pin 77) MENU <<

KS3 (Pin 78) AUDIO PLAY

KS4 (Pin 79) ATT >>

KS5 (Pin 80) N/A FM

KDC-BT7539U/BT8041U /BT8141UY/BT838U

TEST MODE

How to enter the test mode

●

Press and hold the [FNC] and [EJECT] keys and reset. (While “----” is being displayed, power can be ON for 30

minutes.)

How to clear the test mode

●

Reset, momentary power down, ACC OFF, Power OFF,

detach the panel.

Test mode default condition

●

• Source is STANDBY.

• Display lights are all turned on.

• The volume is at 30 (-10dB).

• LOUD is OFF.

• CRSC is off regardless of the availability of switching function.

• SYSTEM Q is NATURAL (=FLAT).

• BEEP should always function when the key is pressed brieﬂ y.

• AUX is ON

• DISPLAY TYPE is TYPE A, SIDE is Display Tag.

• TUNER source display shall be as shown below:

<For European models> Upper row = PS/Frequency,

Middle row = Spectrum analyzer/Clock, Lower row = Date

<For models of destination “K” and “M”> Upper row =

SNPS, Middle row = Spectrum analyzer/Clock, Lower row = Date

• CD/USB source display shall be as shown below:

Upper row = P-TIME, Middle row = Spectrum analyzer/

Clock, Lower row = Date

• SOURCE SELECT shall be “2”.

Speciﬁ cation of the test mode for tuner source

●

The frequency of 98.3MHz is received when the [4] key is

pressed in the TUNER FM mode.

(∗1) Only in the test mode, [1] key, [2] key, [3] key, [4] key,

[5] key and [6] key shall be displayed on the multifunction key.

1. Press the [FNC] key briefly to make the multi-

function display.

2. Rotate the control knob on the right side and use

the [ center.

3. Press the [

(∗2) Perform the same operations as above on the keys,

[1], [2], [3], [4], [5], and [6] of the remote controller.

] / [ ] keys to display the target key in the

] key brieﬂ y to ﬁ nalize the display.

TUNER Setup adjustment mode speciﬁ cation

●

1. Use [FM] / [AM] key to select TUNER band.

2. Press and hold [ adjustment mode. At the same time, set FM receive frequency to 98.3MHz.

3. Use [FM] / [AM] key to change between the adjustment items.

FM Key

Seek Stop Level adjustment (manual)

(Note) The ﬁ rst item shall be Soft Mute adjustment. But, in the case of AM band, the ﬁ rst item shall be

Seek Stop Level adjustment (auto) because there is no Soft Mute adjustment for AM band.

4. Proceed with the following steps for every adjustment item:

Soft Mute Adjustment ∗ This item exists only in TUNER FM. Make adjustment

under the condition when VOLUME=30 and LOUD is OFF.

(Display) SMD–x___ : Adjustment values, 0~F, are

a. Use [

tinuously held) to set the value between 0 (18dBμ) and F (36dBμ).

b. After the completion of the adjustment, press and hold

[ values in E2PROM. At the successful completion of the writing, “EP_WRITE” is displayed

Seek Stop Level Adjustment (Auto)

(Display) ATN_4.32V : When at Normal (Local OFF)

(Display) ATL_3.45V : When at Local (Local ON)

Current receive level

a. In the band in which Local Seek ON/OFF is selectable,

Press [AUTO] / [TI] key brieﬂ y to change between Lo- cal Seek ON and OFF.

] / [ ] key (which can be pressed and con-

] key for 2 seconds to start writing the adjustment

] key for 2 seconds to enter TUNER

Soft Mute adjustment

FM Key

AM Key

←

AM Key

FM Key

shown in “x”.

Seek Stop Level adjustment (auto)

TEST MODE

KDC-BT7539U/BT8041U /BT8141UY/BT838U

b. Press and hold [ ] key for 2 seconds to make the cur-

rent receive level to be the seek stop level in order to start writing the adjustment values in E2PROM. At the successful completion of the writing, “EP_WRITE” is displayed. (In this step, use Local Seek ON/OFF setup to change the destination of the writing.)

Seek Stop Level Adjustment (Manual)

(Display) MNN_3.98V : When at Normal (Local OFF)

(Display) MNL_4.44V : When at Local (Local ON)

Adjustment values

Contents written in E2PROM as

a. In the band in which Local Seek ON/OFF is selectable,

Press [AUTO] / [TI] key brieﬂ y to change between Lo- cal Seek ON and OFF.

b. Use [

tinuously held) to manually adjust the seek stop level between 0.00 and 4.49V (K/M), and between 0.00 and

4.70V (E), depending on the destination. The key keeps functioning downwards after the level

∗

c. Press and hold [

age that is adjusted in the above step to be the seek stop level and to start writing the voltage in E2PROM. At the successful completion of the writing, “EP_ WRITE” is displayed. (In this step, use Local Seek ON/ OFF setup to change the destination of the writing.)

5. Press [ mode (and to keep running the Test mode).

] / [ ] key (which can be pressed and con-

becomes 0.00V but in the meantime the level will become 0.00V as it is displayed.

] key briefly to exit from TUNER Adjustment

←

the initial values are displayed.

] key for 2 seconds to make the volt-

K3I forced switching

●

Every time when [6] key is pressed in tuner FM band,

switched in the following order: AUTO→Forced WIDE

Forced MIDDLE→Forced NARROW→AUTO. Default

→

status is AUTO, and displayed as shown below.

• AUTO

• Forced WIDE

• Forced MIDDLE

• Forced NARROW

CD source test mode speciﬁ cation

●

• Jumps to the following tracks by pressing the [ ] key. 9→15→10→11→12→13→22→14→9 (recursive) Note that when playing a CD-DA disc and MP3 / WMA

• Pressing the [

• While in CD source, press the [1] key ([1] and [FM] keys

• While in CD source, press the [2] key brieﬂ y to jump to

• While in CD source, press the [3] key brieﬂ y to display

Press the [3] key brieﬂ y again to return to the normal dis-

…

/ AAC / WAV discs with 8 ﬁ les or less, the disc is played from the 1 track in the normal order.

] key goes back by 1 track from the track

being played.

are for CD-DA) brieﬂ y to jump to No.28.

No.14.

CD mechanism model name and the version.

play. (Time code display)

6E20 V0123

SERV V1.23

BOOT V1.23

aF1 98.1

wF1 98.1

…

mF1 98.1

…

nF1 98.1

RDS automatic measurement (European model)

●

Add the process to replace the visual inspection of PS

display previously done in the production line.

When it is conﬁ rmed that the PS data has been received

and that the content of the PS is “RDS_TEST”, force to OFF the P-CON terminal. ( The symbol, “_” indicates the blank. )

→ Make this as the process dedicated for the test mode. P-CON is recovered by Power OFF→ON.

Special display in tuner sourse

●

Error is found in front-end, etc. if indications below are

displayed while in tuner sourse.

• “TNE2P_NG”…… E2PROM (inside front–end) values are

still default (not determined)

• “TNCON_NG”…… Cannot communicate with the front-

end.

• While in CD source, press the [6] key ([6] and [AM] keys are for CD-DA) brieﬂ y to jump to No.15. At this time, the volume value is set to 27 (2V PRE).

(∗1) Only in the test mode, [1] key, [2] key, [3] key and [6]

key shall be displayed on the multi-function key.

1. Press the [FNC] key briefly to make the multi-

function display.

2. Rotate the control knob on the right side and use

the [ center.

3. Press the [

(∗2) Perform the same operations as above on the keys,

[1], [2], [3], and [6] on the remote controller.

AUDIO adjust mode

●

• Press the [AUD] key brieﬂ y to enter the audio adjustment mode.

] / [ ] keys to display the target key in the

] key brieﬂ y to ﬁ nalize the display.

KDC-BT7539U/BT8041U /BT8141UY/BT838U

TEST MODE

• Press the remote control [∗] key and [AUD] key to enter the audio adjustment mode.

• Both AUDIO FUNCTION MODE and SETUP MODE adjustment items are included.

• By pressing [AUD] and [FM] key brieﬂ y, switch the item to be adjusted in the following order. (Only in forward rotation)

The default item shall be Fader, and then the item

is forwarded in the following order: Balance→Bass Level→Middle Level→Treble Level→HPF Front→HPF Rear→LPF Sub Woofer (thereafter arbitrary).

• Continuous forwarding by remote control is prohibited.

• Fader is adjusted by the VOL knob and [ in 3 steps: R15↔0↔F15. (Default value: 0)

• Balance is adjusted by the VOL knob and [ keys in 3 steps: L15↔0↔R15. (Default value: 0)

• Bass/Middle/Treble Level are adjusted by the VOL knob and [

• HPF Front / Rear is adjusted by the VOL knob and [ [ value: Through)

• LPF Sub Woofer is adjusted by the VOL knob and [

/ [

value: Through)

• Sub Woofer Phase is adjusted by the VOL knob and [ / [ Normal)

• Volume Offset (other than the internal AUX) is adjusted by the VOL knob and [ (Default value: 0)

• Volume Offset (the internal AUX) is adjusted by the VOL knob and [ value: 0)

• Loudness ON/OFF is adjusted by the VOL knob and [ / [

• Dual Zone ON / OFF is adjusted by the VOL knob and [ OFF)

• Bass f / Bass Q / Bass EXT / Middle f / Middle Q / Treble f are not displayed in the audio adjustment menu.

• SYSTEM Q curve selection is not displayed in the audio adjustment menu.

] / [ ] keys in 3 steps: -8↔0↔8. (Default value:

] keys in 2 steps: Through↔180Hz (or 220Hz). (Default

] keys in 2 steps: 60Hz (or 50Hz) ↔Through. (Default

] keys in 2 steps: Reverse↔Normal. (Default value:

] / [ ] keys in 2 steps: -8↔0.

] / [ ] keys in 3 steps: -8↔0↔+8. (Default

] keys in 2 steps: OFF↔ON. (Default value: OFF)

] / [ ] keys in 2 steps: OFF↔ON. (Default value:

] / [ ] keys

] / [ ]

] /

• Continuous forwarding by remote control is prohibited.

• Only in the Test mode, add [PH-SEL] (Phone Selection) in the multi-function display of the STANDBY source and this shall be included in the initial item (and shall be located at the top of the item).

• The initial item in TUNER source MENU source during the Test mode shall be selectable between Seek ON and OFF. (European model)

• Only in the Test mode, it shall be made possible to show “ROM Write Mode” and “ROM Read Mode” items in the STANDBY source MENU to allow the ROM data transfer process.

Bluetooth

●

• Connect the unit with the Test mode counterpart unit and follow the below procedure to do the Audio Loop Back test.

• While in the source is STANDBY, press and hold the [ATT] key for 1 second to initialize the BT memory information to the factory setup.

During the initialization, the message “Initialize....” blinks

(at the period of 1Hz) and at the completion of the initial-

]

ization the message, “BT_MEM_INIT_OK” is displayed.

(In the case of unsuccessful initialization, the message,

“BT_MEM_INIT_NG” is displayed.)

• Factory setup

Pairing information (Flash Memory) cleared Telephone number preset (E2PROM) cleared Friendly name “KENWOOD BT CD/R-2P2” written PIN code “0000” written

• Audio Loop Back

Audio Loop Back test can be carried out with BT Audio

source in the Test mode.

(Note: After the Audio Loop Back test, “CK5050” is add-

ed to the list of registered units. After the completion of the test, without fail reset to the factory setup using the above procedure.)

1. Add [PH-SEL] (Phone Selection) in the multi-function of the STANDBY source in the test mode, and the [PH-SEL] shall be included in the initial item.

●

• Press the [FNC] key briefly to make the multi-function display and press the [

• Press the remote control [DNPP/SBF] key and the [DIRECT] key to enter the MENU.

] key brieﬂ y to enter the MENU.

2. While in the source is STANDBY, press the [FNC] key brieﬂ y to show the multi-function display and press the [

] key brieﬂ y to enter the Phone Selection mode (Coun-

terpart unit selection mode).

+ 36 hidden pages