Jvc KWAVX 746 A Service Manual

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Jvc KWAVX 746 A Service Manual

Extracted text from Jvc KWAVX 746 A Service Manual (Ocr-read)


Page 1

1-2 (No.MA493) SPECIFICATION *1 Only for KW-ADV794/KW-AVX748/KW-AVX740 *2 Only for KW-ADV794/KW-AVX740/KW-AVX640. Design and specifications are subject to change without notice. If a kit is necessary for your car, consult your telephone directory for the nearest car audio speciality shop. KW-ADV794J/KW-AVX748JW/KW-AVX740J/KW-AVX640J AMPLIFIER Power Output 20 W RMS × 4 Channels at 4 -„¦ and -‰¤ 1% THD+N Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4 -„¦) Load Impedance 4 -„¦ (4 -„¦ to 8 -„¦ allowance) Equalizer Control Range Level ±12 dB Audio Output Level FRONT OUT, REAR OUT, SUBWOOFER OUT Line-Out Level/Impedance 4 V/20 k-„¦ load (full scale) Output Impedance 1 k-„¦ Video Output (composite) VIDEO OUTColor System PAL/NTSC Video-Out Level/Impedance 1 Vp-p/75-„¦ Other Terminals Input LINE IN, VIDEO IN, CAMERA IN, USB input, MIC IN*1, AUX, Antenna input Others Expansion port*2, OE REMOTE, RGB input FM/AM TUNER Frequency Range FM with channel interval set to 200 kHz 87.9 MHz to 107.9 MHz with channel interval set to 50 kHz 87.5 MHz to 108.0 MHz AM with channel interval set to 10 kHz 530 kHz to 1 700 kHz with channel interval set to 9 kHz 531 kHz to 1 611 kHz FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 -„¦) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 -„¦) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 40 dB AM Tuner Sensitivity/Selectivity 20 µV/40 dB DVD/CD Signal Detection System Non-contact optical pickup (semiconductor laser) Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz VCD/CD 16 Hz to 20 000 Hz Dynamic Range 93 dB Signal-to-Noise Ratio 95 dB Wow and Flutter Less than measurable limit USB USB Standards USB 2.0 Full Speed Data Transfer RateFull Speed Maximum 12 Mbps Low Speed Maximum 1.5 Mbps Compatible Device Mass storage class Compatible File System FAT 32/16/12 Max. Current DC 5 V 1A BLUETOOTH (Only for KW-ADV794/KW-AVX748/KW-AVX740) Version Bluetooth 2.0 certified Output Power +4 dBm Max. (Power class 2) Service Area Within 10 m (10.9 yd) ProfileHFP (Hands-Free Profile) 1.5 OPP (Object Push Profile) 1.1 A2DP (Advanced Audio Distribution Profile) 1.2 AVRCP (Audio/Video Remote Control Profile) 1.3 PBAP (Phone Book Access Profile) 1.0 MONITOR Screen Size 6.1 inch wide liquid crystal display Number of Pixel 1 152 000 pixels : 800 (horizontal) × 3 (RGB) × 480 (vertical) Drive Method TFT (Thin Film Transistor) active matrix format Color System NTSC/PAL Aspect Ratio 16:9 (wide) GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Grounding System Negative ground Allowable Storage Temperature -10°C to +60°C (14°F to 140°F) Allowable Operating Temperature 0°C to +40°C (32°F to 104°F) Dimensions (W × H × D) Installation Size (approx.) 182 mm × 111 mm × 160 mm (7-3/16 × 4-3/8 × 6-5/16) Panel Size (approx.) 188 mm × 117 mm × 10 mm (7-7/16 × 4-5/8 × 7/16) Mass (approx.) 2.3 kg (5.1 lbs) (including the Trim plate and Sleeve)

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(No.MA493)1-3 * Only for KW-AVX740,KW-AVX746 Design and specifications are subject to change without notice.KW-AVX740E/KW-AVX640E/KW-AVX746EU/KW-AVX646EU AMPLIFIER Maximum Power Output Front/Rear 50 W per channel Continuous Power Output (RMS) Front/Rear 20 W per channel into 4 -„¦, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion Load Impedance 4 -„¦ (4 -„¦ to 8 -„¦ allowance) Equalizer Control Range Level ±12 dB Signal-to-Noise Ratio 70 dB Audio Output Level FRONT OUT, REAR OUT, SUBWOOFER OUTLine-Out Level/Impedance4 V/20 k-„¦ load (full scale) Output Impedance1 k-„¦ Video Output (composite) VIDEO OUTColor System PAL/NTSC Video-Out Level/Impedance 1 Vp-p/75 -„¦ Other Terminals Input LINE IN, VIDEO IN, CAMERA IN, USB input, MIC IN*, AUX, Aerial input Others OE REMOTE, RGB input FM/AM TUNER Frequency Range FM 87.5 MHz to 108.0 MHz AM (MW) 531 kHz to 1 611 kHz (LW) 153 kHz to 279 kHz FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 -„¦) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 -„¦) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 40 dB MW Tuner Sensitivity/Selectivity 20 µV/40 dB LW Tuner Sensitivity 50 µV DVD/CD Signal Detection System Non-contact optical pickup (semiconductor laser) Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz VCD/CD 16 Hz to 20 000 Hz Dynamic Range 93 dB Signal-to-Noise Ratio 95 dB Wow and Flutter Less than measurable limit USB USB Standards USB 2.0 Full Speed Data Transfer Rate Full Speed Maximum 12 Mbps Low Speed Maximum 1.5 Mbps Compatible Device Mass storage class Compatible File System FAT 32/16/12 Max. Current DC 5 V 1A BLUETOOTH (Only for KW-AVX740A/KW-AVX746) Version Bluetooth 2.0 certified Output Power +4 dBm Max. (Power class 2) Service Area Within 10 m ProfileHFP (Hands-Free Profile) 1.5 OPP (Object Push Profile) 1.1 A2DP (Advanced Audio Distribution Profile) 1.2 AVRCP (Audio/Video Remote Control Profile) 1.3 PBAP (Phone Book Access Profile) 1.0 MONITOR Screen Size 6.1 inch wide liquid crystal display Number of Pixel 1 152 000 pixels : 800 (horizontal) × 3 (RGB) × 480 (vertical) Drive Method TFT (Thin Film Transistor) active matrix format Color System PAL/NTSC Aspect Ratio 16:9 (wide) GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Grounding System Negative ground Allowable Storage Temperature -10°C to +60°C Allowable Operating Temperature 0°C to +40°C Dimensions (W × H × D) Installation Size (approx.) 182 mm × 111 mm × 160 mm Panel Size (approx.) 188 mm × 117 mm × 10 mm Mass (approx.) 2.3 kg (including the Trim plate and Sleeve)

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(No.MA493)1-5 * Only for KW-AVX746 Design and specifications are subject to change without notice.KW-AVX746A/KW-AVX746U,UT/KW-AVX646U,KW-AVX648UF AMPLIFIER Maximum Power Output Front/Rear 50 W per channel Continuous Power Output (RMS) Front/Rear 20 W per channel into 4 -„¦, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion Load Impedance 4 -„¦ (4 -„¦ to 8 -„¦ allowance) Equalizer Control Range Level ±12 dB Signal-to-Noise Ratio 70 dB Audio Output Level FRONT OUT, REAR OUT, SUBWOOFER OUTLine-Out Level/Impedance4 V/20 k-„¦ load (full scale) Output Impedance1 k-„¦ Video Output (composite) VIDEO OUTColor System PAL/NTSC Video-Out Level/Impedance 1 Vp-p/75 -„¦ Other Terminals Input LINE IN, VIDEO IN, CAMERA IN, USB input, MIC IN*, AUX, Aerial input Others OE REMOTE, RGB input FM/AM TUNER Frequency Range FM 87.5 MHz to 108.0 MHz AM 531 kHz to 1 611 kHz FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 -„¦) 50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 -„¦) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 40 dB AM Tuner Sensitivity/Selectivity 20 µV/40 dB DVD/CD Signal Detection System Non-contact optical pickup (semiconductor laser) Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz VCD/CD 16 Hz to 20 000 Hz Dynamic Range 93 dB Signal-to-Noise Ratio 95 dB Wow and Flutter Less than measurable limit USB USB Standards USB 2.0 Full Speed Data Transfer Rate Full Speed Maximum 12 Mbps Low Speed Maximum 1.5 Mbps Compatible Device Mass storage class Compatible File System FAT 32/16/12 Max. Current DC 5 V 1A BLUETOOTH (Only for KW-AVX746) Version Bluetooth 2.0 certified Output Power +4 dBm Max. (Power class 2) Service Area Within 10 m ProfileHFP (Hands-Free Profile) 1.5 OPP (Object Push Profile) 1.1 A2DP (Advanced Audio Distribution Profile) 1.2 AVRCP (Audio/Video Remote Control Profile) 1.3 PBAP (Phone Book Access Profile) 1.0 MONITOR Screen Size 6.1 inch wide liquid crystal display Number of Pixel 1 152 000 pixels : 800 (horizontal) × 3 (RGB) × 480 (vertical) Drive Method TFT (Thin Film Transistor) active matrix format Color System PAL/NTSC Aspect Ratio 16:9 (wide) GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Grounding System Negative ground Allowable Storage Temperature -10°C to +60°C Allowable Operating Temperature 0°C to +40°C Dimensions (W × H × D) Installation Size (approx.)182 mm × 111 mm × 160 mm 180 mm × 100 mm × 160 mm (KW-AVX648) Panel Size (approx.) 188 mm × 117 mm × 10 mm Mass (approx.) 2.0 kg

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1-12 (No.MA493) 3.1.11 Removing the Panel-B board (See Fig.18) (1) Disconnect the card wires from Panel-A board connected to connector CN603 of the Panel-B board. (2) Disconnect the card wires from Panel-B board connected to connector CN604 of the Panel-B board. (3) Disconnect the FPC connected to connectors CN604 and CN605 of the Panel-B board. (4) Remove the four screws V attaching the Panel-B board. Fig.18 3.1.12 Removing the Panel-A board (See Fig.19) (1) Disconnect the FPC connected to connector CN501 of the Panel-A board. (2) Remove the four screws W attaching the Panel-A board. 3.1.13 Removing the SW board (See Fig.19) (1) Remove the volume knob (2) Remove the one screw X attaching the SW board. Fig.193.2 DVD mechanism assembly section 3.2.1 Removing the Traverse mechanism assembly (See Fig.1 to 6) (1) Solder the short land section on the flexible wire of pickup. (See Fig.1) Caution: * Solder the short land section on the flexible wire of pickup before disconnecting the flexible wire form the connector CN101 on the Front end board. If the flexible wire is disconnected without attaching the solder, the pickup may be destroyed by static electricity. * When attaching the Traverse mechanism assembly, re- move the solder from the short land section after connection the flexible wire to the connector CN101 on the Front end board. Fig.1 (2) Voltage supply to TP79 and TP81 approx DC 3.0V until Clamper is shift to loading complete position. (See Fig.2) (3) Disconnect the flexible wires from Traverse mechanism assembly connected to connector CN1 and CN101 of the Front end board. (See Fig.2 ) Fig.2 CN606 VV V CN605 CN604 CN603 CN501 WX Solder short part CENTER R21 D- DGND_7 R312 R317 WOOFERTP67 R357TP79 TP81 TP92 Voltage supply position CN1CN101 TP81 TP79