JVC KD-R440J, KD-R440JW, KD-R441E, KD-R441EN, KD-R441EU Service manual

...

SERVICE MANUAL

CD RECEIVER

MA538<Rev.003>20135SERVICE MANUAL

KD-R440J, KD-R440JW, KD-R441E, KD-R441EN, KD-R441EU,

KD-R441EY, KD-R442E, KD-R442EN, KD-R442EY, KD-R443E,

KD-R443EN, KD-R443EY, KD-R444UI, KD-R445U, KD-R445UN,

KD-R446EU, KD-R446U, KD-R446UN, KD-R446UP, KD-R446UT,

KD-R447EE, KD-R449E, KD-R449EE, KD-R449UR, KD-R540J,

KD-R541E, KD-R541EN, KD-R541EY, KD-R547EE

For US

For Asia,Europe

KD-R440

For US

KD-R541

For Erope

(RU,UK)

DETACHABLE PANEL

Model ModelParts number

KD-R440J KD-R440JW KD-R441E KD-R441EY KD-R441EN KD-R441EU KD-R442E KD-R442EY KD-R442EN KD-R443E KD-R443EY KD-R443EN KD-R444UI KD-R445U

CP-R440JD CP-R440JD CP-R441ED CP-R441ED CP-R441ED CP-R441ED CP-R442ED CP-R442ED CP-R442ED CP-R443ED CP-R443ED CP-R443ED CP-R444UID CP-R445UD

KD-R445UN KD-R446EU KD-R446U KD-R446UN KD-R446UP KD-R446UT KD-R447EE KD-R449E KD-R449EE KD-R540J KD-R541E KD-R541EY KD-R541EN KD-R547EE

Parts number

CP-R445UD CP-R446UD CP-R446UD CP-R446UD CP-R446UD CP-R446UD CP-R447EED CP-R449EED CP-R449EED CP-R540JD CP-R541ED CP-R541ED CP-R541ED CP-R547EED

Mounting sleeve (GE20316-001A)

Hook (GE40643-001A) x2

Hard case assy * (GE32320-001A)

Trim plate * (GE2031x-001A)

Lead free solder used in the board (material: Sn-Ag-Cu, melting point: 219 Centigrade)

Lead free solder used in the board (material: Sn-Cu, melting point: 230 Centigrade)

DC cord * (QAM1344-00x)

Tap screw (2x8) * (QYSDSF2008ZA)

DC cord * (QAM13xx-001)

* It uses it by some models. Refer to the parts list.

Remocon unit (RM-RK52) * (RM-RK52xx)

No.MA538<Rev.003>

2013/5

SPECIFICATION

For US

Audio amplifier

Power Output 20 W RMS x 4 Channels at 4 Ω and ≤ 1% THD+N Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4Ω) Line-Out or Subwoofer-Out Level/Impedance 2.5 V/10 kΩ load (full scale) Output Impedance ≤ 600Ω

Tuner

FM Frequency Range 87.9 MHz to 107.9 MHz (200 kHz step)

87.5 MHz to 108.0 MHz (50 kHz step)

Usable Sensitivity 9.3 dBf (0.8 µV/75Ω) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75Ω)

Alternate Channel Selectivity

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 40 dB

AM Frequency Range 530 kHz to 1 700 kHz (10 kHz step)

Sensitivity/Selectivity 20 µV/40 dB

CD player

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response 5 Hz to 20 000 Hz

Signal-to-Noise Ratio 98 dB

Wow and Flutter Below measurable limit

USB

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Devices Mass storage class

Compatible File Systems FAT 32/16/12

Playable Audio Formats MP3/WMA

Maximum Supply Current DC 5 V 1 A

General

Power Requirement (Operating Voltage) DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C (32°F to 104°F) Dimensions (W × H × D) Installation Size (approx.) 182 mm × 53 mm × 159 mm (7-3/16” × 2-1/8” × 6-5/16”)

Panel Size (approx.) 188 mm × 59 mm × 13 mm (7-7/16" × 2-3/8" × 9/16")

Weight (excluding accessories) 1.2 kg (2.6 lbs)

65 dB (at 400 kHz)

531 kHz to 1 611 kHz (9 kHz step)

• Subject to change without notice.

(No.MA538<Rev.003>)2/18

SPECIFICATION

For Asia

Audio amplifier

Maximum Power Output 50 W per channel

Continuous Power Output (RMS) 20 W per channel into 4Ω, 40 Hz to 20 000 Hz at less than 1% total harmonic distortion Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out or Subwoofer-Out Level/Impedance 4.8 V/10 kΩ load (full scale) Output Impedance ≤ 600Ω

Tuner

FM Frequency Range 87.5 MHz to 108.0 MHz (50 kHz step)

Usable Sensitivity 9.3 dBf (0.8 µV/75Ω) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75Ω)

Alternate Channel Selectivity 65 dB (at 400 kHz)

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 40 dB

AM Frequency Range MW : 531 kHz to 1 611 kHz (9 kHz step)

SW1 : 2 940 kHz to 7 735 kHz (5 kHz step) SW2 : 9 500 kHz to 10 135 kHz/11 580 kHz to 18 135 kHz (5 kHz step)

Sensitivity/Selectivity 20 µV/40 dB

CD player

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response 5 Hz to 20 000 Hz

Signal-to-Noise Ratio 98 dB

Wow and Flutter Below measurable limit

USB

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Devices Mass storage class

Compatible File Systems FAT 32/16/12

Playable Audio Formats MP3/WMA

Maximum Supply Current DC 5 V 1 A

General

Power Requirement (Operating Voltage) DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C

Dimensions

(W × H × D)

Weight (excluding accessories) 1.2 kg

Installation Size (approx.) 182 mm × 53 mm × 159 mm Panel Size (approx.) 188 mm × 59 mm × 13 mm

• Subject to change without notice.

(No.MA538<Rev.003>)3/18

SPECIFICATION

For Europe

Audio amplifier

Power Output 50 W per channel

Continuous Power Output (RMS) 20 W per channel into 4Ω, 40 Hz to 20 000 Hz at less than 1% total harmonic distortion Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out or Subwoofer-Out Level/Impedance For KD-R547/KD-R541/KD-R449 : 2.5 V/10 kΩ load (full scale) Output Impedance ≤ 600Ω

Tuner

FM Frequency Range For KD-R541/KD-R443 /KD-R442/KD-R441/KD-R449 : FM: 87.5 MHz to 108.0 MHz

For KD-R547/KD-R449 /KD-R447 : FM: 87.5 MHz to 108.0 MHz / FM-LO: 65.0 MHz to

74.0 MHz

Usable Sensitivity 9.3 dBf (0.8 µV/75Ω) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75Ω)

Alternate Channel Selectivity 65 dB (at 400 kHz)

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 40 dB

AM Frequency Range MW : 531 kHz to 1 611 kHz

LW : 153 kHz to 279 kHz

Sensitivity/Selectivity MW : 20 µV/40 dB

LW : 50 µV/-

CD player

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response 5 Hz to 20 000 Hz

Signal-to-Noise Ratio 98 dB

Wow and Flutter Below measurable limit

USB

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Devices Mass storage class

Compatible File Systems FAT 32/16/12

Playable Audio Formats MP3/WMA

Maximum Supply Current DC 5 V 1 A

General

Power Requirement (Operating Voltage) DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C

Dimensions

(W × H × D)

Weight (excluding accessories) 1.2 kg

Installation Size (approx.) 182 mm × 53 mm × 159 mm Panel Size (approx.) 188 mm × 59 mm × 13 mm

• Subject to change without notice.

(No.MA538<Rev.003>)4/18

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of this product contains special hardware and

many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

(2) Alterations of the design or circuitry of the product should

not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.

(4) The leads in the products are routed and dressed with ties,

clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassembling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check.

• Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).

• Alternate check method Plug the AC line cord directly into the AC outlet. Use an

AC voltmeter having, 1,000Ω per volt or more sensitivity in the following manner. Connect a 1,500Ω 10W resistor paralleled by a 0.15µF AC-type capacitor between an ex-

posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC

voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).

AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity)

0.15 F AC TYPE

Place this probe on

1500 10W

Good earth ground

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal responsibility of the repairer to ensure that

these safety standards are maintained.

(3) Repairs must be made in accordance with the relevant

safety standards.

(4) It is essential that safety critical components are replaced

by approved parts.

(5) If mains voltage selector is provided, check setting for local

voltage.

1.3 Caution

Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.

1.4 Critical parts for safety

In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)

each exposed metal part.

(No.MA538<Rev.003>)5/18

1.5 Preventing static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

1.5.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed.

(1) Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.

(2) Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron palate

(3) Handling the optical pickup

• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)

• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode.

1.6 Handling the traverse unit (optical pickup)

(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a

time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

SOLDER

(No.MA538<Rev.003>)6/18

1.7 Important for laser products

1.CLASS 1 LASER PRODUCT

2.CAUTION :

(For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments.

3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.

4.CAUTION : This laser product uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able to function.

6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure.

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

(No.MA538<Rev.003>)7/18

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 Identifying the CD Mechanism

This unit is equipped with one of the two CD mechanism types below.

• FLM-HC3-1D

• FLM-HC5-1D Before sending the mechanism for repair, please check the following and refer to the corresponding materials.

SPECIFICATION

MODEL NAME STAMP No.

FLM-HC3-1D H31

FLM-HC5-1D H51

Chassis Stamp Print on Right Side of Mechanism

(No.MA538<Rev.003>)8/18

SECTION 3

DISASSEMBLY

3.1 Main body (Used model: KD-R441E)

3.1.1 Removing the Bottom chassis (See Fig.1)

(1) Disengage the 7 hooks a engaging the Bottom chassis. (2) Slide the Bottom chassis backward to remove it.

Fig.1

3.1.2 Removing the Front chassis (See Fig.2)

(1) Disengage the 4 hooks b engaging both sides of the Front

chassis.

(2) Remove the 2 screws B attaching both sides of the Top

chassis. (See Fig.4)

Fig.4

(3) Remove the 2 screws C and 1 clamp attaching the Electric

unit. (See Fig.5)

Clamp

Fig.2

3.1.3 Removing the Electric unit (See Fig.3, 4 and 5)

Remove the 1 screw A attaching the Top chassis. (See Fig.

(1)

Fig.5

(4) Disconnect the FFC wire connected to connector CN101

the CD mechanism. (See Fig.6)

CN101

Fig.6

Fig.3

(No.MA538<Rev.003>)9/18

3.1.4 Removing the CD mechanism (See Fig.7)

(1) Remove the 2 screws D attaching the CD mechanism.

Fig.7

3.1.5 Removing the Switch unit (See Fig.8)

(1) Remove the Volume knob. (2) Remove the 4 screws E attaching the Rear cover. (3) Disengage the 12 hooks c engaging the Rear cover.

3.2 CD mechanism assembly section

3.2.1 Removing the Mecha control board

(1) Solder the short land on the pickup. (See Fig. 1)

SOLDER

Fig.1

(2) Remove the 8 wires from the Mecha control board. (See

Fig.2)

Fig.8

Fig.2

(3) Disconnect the flexible wire from the pickup connected to

the connector CN102 Fig.3)

(4) Remove the 2 screws A attaching the Mecha control board.

(See Fig.3)

on the Mecha control board. (See

BLACK

RED

WHITE

YELLOW

ORANGE

CN102

(No.MA538<Rev.003>)10/18

Fig.3

3.2.2 Removing the Traverse mechanism (See Fig.4, 5)

(1) Remove the 5 springs from the traverse mechanism. (See

Fig.4)

Fig.4

(2) Remove the 3 screws B attaching the bottom frame as-

sembly. (See Fig.5)

(3) Remove the 3 dumpers from the bottom frame assembly.

(See Fig.5)

(2) Remove the shaft from the TM base. (See Fig.7) (3) Disengage the hook a on the pickup from the TM base.

(See Fig.7)

shaft

Fig.5

3.2.3 Removing the Pickup (See Fig.6, 7)

(1) Remove the 2 screws C attaching the feed bracket assem-

bly. (See Fig.6)

Fig.7

3.2.4 Removing the Spindle motor (See Fig.8. 9)

(1) Remove the HC CL. Spring from the HC CL. base and the

TM base, and then lift up the HC CL. base. (See Fig.8)

HC CL. spring

[ SIDE VIEW ]

Fig.8

Fig.6

(No.MA538<Rev.003>)11/18

(2) Remove the HC CL. base from the holes on the TM base.

(See Fig.9)

Fig.9

(3) Remove the 2 screws D attaching the spindle motor. (See

Fig.10)

3.2.5 Removing the Loading motor

(1) Remove the roller arm assembly from the bottom frame as-

sembly. (See Fig.11)

Fig.11

(2) Remove the 2 screws E attaching the loading motor as-

sembly, and then remove the loading motor assembly in the direction of the arrow. (See Fig.12)

Fig.10

Fig.12

(No.MA538<Rev.003>)12/18

SECTION 4

ADJUSTMENT

4.1 Service Test mode

4.1.1 Default status immediately after the mode activation

Operating Key: [MENU] + [] (7sec) Press and hold.

4.1.2 How to release each Test mode

• Reset

•Acc off

• Power off

• Panel Detach

4.1.3 Mode content

Syscon shall display the following information after entering this mode. The operation shown below shall be workable.

Display content Detail

S R V T E S T

The display is released when another operation is executed.

4.1.4 Common operation mode for all sources.

means Press and hold.

Operation Display content Detail

[EQ]

CD error information display

Transit to CD error information display mode

mode

[MENU]

Syscon version display

S Y S #

@ @ @

# = Display of destination. J = USA R = EUROPE E = EASTERN-EUROPE U = OTHERS(e.g. ASIA) @@@ = Syscon version number

Power ON duration display

[2]

Disc operation duration display

[1]

P O N T M 0 H X X

P O N T M X X X X X

C D T M 0 H X X

C D T M X X X X X

00 - 50 are displayed in " XX ". For less than 1 hour, the display is indicated per 10 minutes.

00001 - 10922 are displayed in " XXXXX ". MAX 10922 (hours).

00 - 50 are displayed in " XX ". For less than 1 hour, the display is indicated per 10 minutes.

00001 - 10922 are displayed in " XXXXX ". MAX 10922 (hours).

[DISP]

[DISP]

Disc eject number of times

Disc eject number of times clear

E J C N T X X X X X

E J C N T 0 0 0 00

00001 - 99999 are displayed in "XXXXX"

Clear Disc Eject number of times by pressing for 2 seconds when it is displayed.

[]

Force Power OFF information display

P O F F - --

P O F F P N L

No force Power OFF

Force Power OFF due to SysconPanel communication error. Will not show in JK12 Models.

[]

Force Power OFF information clear

P O F F - --

Clear Force Power OFF information by pressing for 2 seconds when it is displayed. Will not show in JK12 Models.

(No.MA538<Rev.003>)13/18

4.1.5 CD error information display mode

Operation Display content Detail

CD mecha error log display

Mecha error history 1,2,3 (latest) # = History No. (1,2,3) XX : kind of errors, " -- " when there is none. 00: No Error 04: TOC read Error

M E C H E R #AXX

05: Unknown CD 06: Heat Error 0A: Update Error 0D: Hold Error 15: Unknown Disc 99: Mecha Error

CD load error information display

L O A D E R # X X

Load error switch 1,2 # = History No. (1,2) XX: numbers of errors, " -- " when there is none History No. 2 is un-used

CD eject error information display

Eject error switch 1,2,3,4 # =History No. (1,2,3,4) XX: numbers of errors, " -- "when there

Move

between

[DISP]

(Forward

search)

i t e m w i t h

[] / []

CD time code error count information display (count skip)

E J E C T E R # X X

C N T L O S E

C D D A XX

is none History No.3 is un-used History No.1: Eject before SW1 is on. History No.2: Eject until SW1 and SW2 is on. History No.3: Eject between SW2 on and Eject end

CD-DA error count number information

CD-DA error count numbers XX: numbers of errors and " -- " when there is none Can only be checked via debugger by jap member

CD-ROM (compressed file) error count numbers XX: numbers of errors and " -- " when there

C D R O M X X

is none Can only be checked via debugger by jap member

CD time code error count information display (no count update)

C N T S T A Y

C D D A XX

CD time code error count information (count not updated) mode display

CD-DA error count numbers XX: numbers of errors and " -- " when there is none

CD-ROM (compressed file) error count numbers

C D R O M X X

XX: numbers of errors and " -- " when there is none

[EQ]

CD error information clear

CD error information all clear Clear CD error information by pressing

M E C H A E R 1 - -

for 2 seconds when it is displayed.

[EQ] Mode release CD error information display mode release Back to default status, All lights on

(No.MA538<Rev.003>)14/18

4.2 Service Information Clear Mode

4.2.1 Default status immediately after the mode activation

* The receiver is connected with the DC power supply (with the power supply turned off). Operating Key: [BACK] + [POWER] Press and hold + DC power supply turned ON

4.2.2 How to release each Test mode

• Reset

•Acc off

• Power off

• Panel Detach

4.2.3 Mode content

After entering this mode, Syscon shall clear the information stored for service and output the result to the display tube. CD will be ejected upon process ended. Preset Frequencies and Tagging (HD models) information shall be cleared.

Display content Detail

D A T A C L R O K

When normal end

When error end

D A T A C L R N G

Display blinks with 250ms interval.

The following table shows the data that is cleared.

Information for data clearing Detail Storage area

CD mecha log display E2PROM

CD load error information display E2PROM

CD mecha information

CD eject error information display E2PROM

CD time code error count information display (count skip) E2PROM

CD time code error count information display (no count update) E2PROM

Service information

DC error information

CD EJECT number of times display E2PROM

Force Power OFF information display E2PROM

DC error 1 display (wrong connection & other detection information in detecting duration) E2PROM

DC error 2 display (capacitor leakage detection number information) E2PROM

Tuner Area Setting E2PROM

Preset information

Preset Frequency E2PROM

Preset PI code E2PROM

Preset HD Station Name and Sub-Channel Number (HD models) E2PROM

SXM Preset Channel SID E2PROM

Sirius XM information (Sirius models)

SXM Lock SID E2PROM

SXM Last Channel ID E2PROM

SXM Channel Lock Code E2PROM

Tagging information (HD models) Token data memory index E2PROM

(No.MA538<Rev.003>)15/18

4.3 DC error information mode

4.3.1 Default status immediately after the mode activation

* The receiver is connected with the DC power supply (with the power supply turned off). Operating Key: [MENU] + [] Press and hold + DC power supply turned ON

4.3.2 How to release each Test mode

• Reset

•Acc off

• Power off

• Panel Detach

4.3.3 Mode content

Syscon shall display the following information after entering this mode. The operation shown below shall be workable.

Display content Detail

D C E R R

D C O K

When DC error is detected (in case that one of capacitor leakage, wrong connection or other detection is found).

When DC error is not detected (in case that none of capacitor leakage, wrong connection or other detection is found).

4.3.4 Mode operation specification

means Press and hold

Operation Display content Detail

[]

[]

DC ERR1 display

DC ERR1 clear

D C 1 E R R

D C 1 O K

When wrong connection & DC error in other detection duration is detected.

When wrong connection & DC error in other detection duration is not detected.

Clear detection information when wrong connection & DC error in other detection duration is displayed.(Clear data flash)

[]

[]

DC ERR2 display

DC ERR2 clear

D C 2 4

D C 2 0

Display detecting number of times in capacitor leakage detection duration (0 - 4)

Clear number of times for detection information in capacitor leakage detection duration.(Clear data flash)

(No.MA538<Rev.003>)16/18

4.4 DC offset error description

4.4.1 DC offset detection circuit design

•Purpose: To prevent breakdown, burning and emitting smoke from customer's car speaker when occur DC offset between speaker output "+" and "-".

• Target: Detect DC offset, then stop the Power Amp operation and shift to specified condition.

4.4.2 Possible causes of DC offset at speaker output lines

(1) Mis-connection for speaker output for example touch to car

body or battery line. (2) Current leak of coupling capacitor for Power IC input. (3) Current leak of Ac-GND capacitor for Power IC Ac-GND. (4) Capacitor shorted of above parts due to foreign object.

C-tc

E-Vol

Win_TC

Win_In

DC Error

C-in

C-ac2C-ac1

Sw5V

Audio Pwr Amp

In 1

In 2

In 3

In 4

AcGnd

Offset Detect Out

Micon

ADC In

4.4.5 Manipulate after detect DC offset

• If detected error 10 consecutive times, and 10th error occurred in "Mis-connect detection period", judge as "Mis-connect".

• If detected error 10 consecutive times, and 10th error occurred in "Capacitor leak detection period", judge as "Capacitor leak ".

• If detected error 10 consecutive times, and 10th error occurred in "Other detection period" and detected another 10 errors consecutively, then judge as "Other".

• If judge as "Mis-connect".

- turn off speaker output.

- display "MIS WIRING" → "CHK WIRING" → "THEN RESET"

→ "UNIT".

- key access disable except button of Eject, Reset and service

mode

- record error in EEPROM "DC1 ERR"

- Set is able to be recovered by Reset button.

• If judge as "Capacitor leak ".

- turn off speaker output.

- display "WARNING" → "CHK WIRING" → "THEN RESET"

→ "UNIT".

- key access disable except button of Eject, Reset and service

mode

- record error in EEPROM "DC2 #" (# means counter number)

- Set can be recovered by pressing the Reset button before

the capacitor leak error counter reach "DC2 4". After that, only clear the counter back to "0" can recover the set.

• If judge as "Other" (manipulation same as mis-connect)

SECTION 5

4.4.3 Type of checking

4.4.3.1 To detect DC offset Error

• Mis-connection

- Short any one speaker out line to GND or Vcc

• Capacitor leak

- Parallel 330kΩ to either any one of coupling cap or Ac-GND

cap (to simulate current leakage of capacitor)

- Shorted either any one of coupling cap or Ac-GND cap.

4.4.4 Detection Timing chart

PWIC_STBY

PWIC_MUTE

UD_MUTE

2.0sec or more

Missconnect detection period

1.5sec or more

0.8sec

0.7sec or more

1.0sec

Capacitor leak

detection period

Other (miss detection etc.) detection period

50ms

or more

TROUBLESHOOTING

5.1 How to cancel DC offset error

Check to be sure the terminals of the speaker leads are covered with insulating tape properly, then reset the unit. If an error message does not disappear even after a reset, there is a need for internal repair.

5.2 How to clear DC offset error recorded in EEPROM

DC Error Information Mode is started. [MENU] + [] Press and hold + DC power supply turned ON

DC1 ERR → [] Press and hold.→ DC1 OK DC2 1-4 → [] Press and hold.→ DC2 0

(No.MA538<Rev.003>)17/18

JVC KENWOOD Corporation

Car Electronics Business Group 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525, Japan

(No.MA538<Rev.003>)

Printed in Japan

VSE

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