Pioneer-VSX59TXI-avr-sm维修电路原理图.pdf

ORDER NO. PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER CORPORATION 2003 STANDBY/ON OFFON STANDBY DVD/LDTV/DVDSATVIDEO VIDEOAUDIO DVR/VCR1VCR2VCR3CDTUNERPHONO CD-R/ TAPE1/MD MULTI CH INPUT LISTENING MODE SELECTOR TURN/PUSH MASTER VOLUMEINPUT SELECTOR VSX-59TXiAUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-59TXi RRV2856 AUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-59TXi THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower RequirementRemarks VSX-59TXiKU/CAAC120V For details, refer to Important symbols for good services . T-ZZR DEC. 2003 printed in Japan RadioFans.CN 收音机爱 好者资料库 VSX-59TXi2 1234 1234 C D F A B E SAFETY INFORMATION This service manual is intended for qualified service technicians it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. ; Improperly performed repairs can adversely affect the safety and reliability of the product and mayvoid the warranty. If you are not qualified to perform the repair of this product properly and safely, youshould not risk trying to do so and refer the repair to a qualified service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health if the resistance between the drain and source of a channel is 0 ohm, and the drain resistance is ohms, that channel is in failure. You can also visually confirm the channel in failure from a damage scar on the surface of the part generated as a result of opening of the drain resistor. If one of the paired MOS-FETs in a push-pull circuit is damaged, another MOS- FET may be damaged even if the resistance measured by a tester shows no sign of short-circuiting of that MOS-FET. Replace both parts when either needs to be replaced. 2. Damage to the voltage amplifier section The voltage amplifier section may be damaged by oscillation caused by unusual load connection, high-frequency output outside the audible frequency range with high amplitude, or the effect of damage to the power amplifier section. One possible part to be damaged is the IC, and two power resistors and four output resistors may be open. As a MOS-FET and IC are simultaneously damaged in most cases, both the MOS-FET and IC must be replaced when the MOS-FET is damaged. Therefore, if either the N-ch MOS-FET, P-ch MOS-FET, or IC needs to be replaced, replace all of them. In a rare case when only the IC was damaged, the channel in failure can be identified by searching for a channel that outputs DC voltage when the power is turned on. If is recommended that failure diagnosis of the power amplifier of this unit be performed with the power off, because the power amplifier section, which has a small number of components, can be easily repaired by replacement of semiconductors or according to measurement of resistance values. If failure diagnosis of the voltage amplifier section must be performed while the power is on, be sure to disconnect the connection between the voltage amplifier section and the MOS-FET. If a measuring instrument touches the gate of the MOS-FET being powered, the MOS-FET may be damaged by its oscillation. 3. Damage to other parts If the power amplifier is damaged, the bias protection diodes may be degraded or open. After repairing the power amplifier, check that the four bias protection diodes of the channel in failure are not degraded or open by measuring their Vf (forward voltage drop) with a tester. If these diodes are degraded, distortion may appear or the frequency characteristics may be affected. If they are open, when any abnormality occurs in the power amplifier next time, the damage to the MOS-FETs may be expanded. Drain resistor Open Drain resistor Power resistor Output resistor Output resistor Bias protection diodes To MOS-FET Power resistor Nch MOS-FET Short-circuiting between the drain and source Pch MOS-FET Power-amplifier output RadioFans.CN 收音机爱 好者资料库 VSX-59TXi152 1234 1234 C D F A B E 7.1.3 PROTECTION CIRCUIT CONTROL SPECIFICATIONS PROTECT CHECK DC003 PROTECT CHECK OVER000 PROTECT CHECK TEMP000 (1) Fan control Valid with European and other general-area models only. 1. Fan on/off If the temperature at the transformer rises, the TRANS_DET port becomes L. Detecting L, the microcomputer starts the fan. 2. Fan detection If the fan is forcibly stopped, the FAN_DET port becomes H. Detecting H, the microcomputer performs the following operations: 1. System muting on 2. Protection relays off The warning indication FAN STOP appears (flashing) on the FL display. If this status continues for more than 3 seconds, the power is turned off (for Standby mode) and Standby indicator blinks. If the port becomes L within 3 seconds, the unit resets automatically. (2) Temperature detection If the temperature at the heat sink rises, the TEMP1 port becomes H. Detecting H, the microcomputer performs the following operations: 1. System muting on 2. Protection relays off The warning indication OVER HEAT appears on the FL display. If the temperature fall down and the port becomes L, the unit resets automatocally. (3) Overload detection (abnormality detection) If the speaker terminals are short-circuited or low-load driving is detected, the OL_DET port becomes H Detecting H edge interrupt in an interrupt process, the microcomputer performs the following operations: 1. System muting on 2. All relays off (expander output off) The expander output is turned off to perform detection during the interrupt. As the AC relay is also turned off, no warning indication appears on the FL display. 3. Power off (Standby mode) Standby indicator blinks. (4) DC detection (defect detection) Only DC detection is enabled 2 seconds after power-on. If there is a fault in the power amplifier or a high-level signal lower than 5 Hz is input, the DC_DET port becomes H Detecting H the microcomputer performs the following operations: 1. System muting on 2. Speaker relay off (Control with the display microcomputer) The warning indication AMP ERR appears on the FL display. If this status continues for more than 3 seconds, the power is turned off (for Standby mode) and Standby indicator blinks. If the port becomes L within 3 seconds, the unit resets automatically. When the power is turned off owing to DC detection (also when a user prompted by the warning indication turns off the switch on the primary side), key inputs are disabled for 60 seconds. The microcomputer backs up the value of the 60-second timer. The unit will only enter Standby mode, and power will not be turned on within 60 seconds in response to a key input after power-off on the primary side. (When the switch on the primary side is turned on again, key inputs will be limited for 60 seconds even if the timer value is less than 60 seconds.) After DC detection, power-on from the multiroom side is also disabled for 60 seconds. If the unit resets within 3 seconds (before the power is turned off) after DC detection, the normal operation is restored. (5) Diagnostic mode This mode is only for servicing and checking the circuit design, and not open to users. When the DNR key and VSEL key are both held pressed for 3 seconds in Standby mode, the power is turned on, and the number of times of each defect or abnormality detection is sequentially displayed on the FL display. Displayed items: DC detection Overload detection Fan detection Temperature detection Hold the DNR key and VSEL key pressed for 3 seconds in Standby mode. There is no specific mode for clearing the above-mentioned diagnostic mode. Diagnostic mode is only cleared with an all-reset operation. RadioFans.CN 收音机爱 好者资料库 VSX-59TXi153 5678 56 7 8 C D F A B E MOTHER CN5819-13 IC5801 MAIN u-COM 73-pin Vcc R5859 R5860 C5857 D5814 D5815 VR however, depending on the status of the sending device (type of media, etc.), jitterless transmission may not be possible. Media for which jitterless transmission is supported and those for which it is not (only normal transmission is supported) are shown below: Jitterless transmission: DVD-A, SACD, CD, DTS-CD Normal transmission only : DVD-V, DVD-RW, VCD, MP3 Depending on the specifications of the sending device, it may not support jitterless transmission, even for those media for which it can be supported. As to copyright protection, IEEE 1394 employs the DTCP (Digital Transmission Content Protection) system, which consists of the following: 1. Copy-control information 2. Authentication and key exchange 3. Encryption 4. System renewability The procedures for copy protection are basically as follows: After authentication and key exchange for encryption/decryption, the sending device will send the data encrypted using the keys. The receiving device in turn will decipher the data using the exchanged keys. Media whose data can be encrypted: DVD-V, DVD-A, SACD, DVD-RW Media whose data cannot be encrypted: CD, DTS-CD, VCD, MP3 Operational Outline of the IEEE 1394 Unit This unit supports the A however, depending on the status of the sending device (type of media, etc.), jitterless transmission may not be possible. Media for which jitterless transmission is supported and those for which it is not (only normal transmission is supported) are shown below: Jitterless transmission: DVD-A, SACD, CD, DTS-CD Normal transmission only : DVD-V, DVD-RW, VCD, MP3 Depending on the specifications of the sending device, it may not support jitterless transmission, even for those media for which it can be supported. As to copyright protection, IEEE 1394 employs the DTCP (Digital Transmission Content Protection) system, which consists of the following: 1. Copy-control information 2. Authentication and key exchange 3. Encryption 4. System renewability The procedures for copy protection are basically as follows: After authentication and key exchange for encryption/decryption, the sending device will send the data encrypted using the keys. The receiving device in turn will decipher the data using the exchanged keys. Media whose data can be encrypted: DVD-V, DVD-A, SACD, DVD-RW Media whose data cannot be encrypted: CD, DTS-CD, VCD, MP3 RadioFans.CN 收音机爱 好者资料库 VSX-59TXi157 5678 56 7 8 C D F A B E IEEE 1394 Error Indications No.MessageError CodeCause and Actions to be takenRemarks 1 WRITING CONFIG E7 The Config ROM data are being written to flash memory. Do NOT turn off the power while this message is displayed. While this message is displayed, the Standby button on the main unit is disabled. This message is displayed when a unit whose host board was replaced with a new one is turned on for the first time. 2 MODEL ID ERROR CO The MODEL ID stored in flash memory on the host board and that stored in the main unit do not match. Download the GUID again. This error is generated when a host board for the wrong destination is mounted in the unit, and it will only be generated during servicing. The message will remain displayed until the error is corrected. 3 CONFIG ERROR C1 The Config ROM data are erroneous. Download the GUID again. This message is displayed when the power is turned off while the Config ROM data are being written. As this is generated while the unit is operated online, this error will only be generated during servicing. The message will remain displayed until the error is corrected. Note: If downloading of the GUID cannot be performed for corrective measures for messages 1 and 2, replace the host board with a new one. RadioFans.CN 收音机爱 好者资料库 VSX-59TXi158 1234 1234 C D F A B E 7.1.5 TROUBLE SHOOTING OF THE DSP ASSY When a sound is not out in the surround mode with the digital signal input (SPDIF input) Step 1 : Connection Function: DVD/LD Suppose coils, capacitors and resistors to be poor contact and that is not damaged. START Connector (CN706, CN707) inserted tight ? Insert it tight END Step 2 : Power supply START 5V No Yes Connector (CN701-CN703) inserted tight ? Insert it tight No Yes Jumper wire (CN704) inserted tight ? Insert it tight Is there the input of 5V to IC781-pin 1 ? UCOM Is 3.3V outputting it from IC781-pin 3 ? Confirm the poor contact of lead wire of CN704-pin 2 ? Confirm the poor contact of lead wire of CN501-pin 2 ? Yes Yes Yes No No Replace IC781 No Check the LOCAL SUPPLY Assy and so on No 3rd 5V Is there the input of 5V to IC505-pin 1 ? 3rd 3.3V Is 3.3V outputting it from IC505-pin 3 ? Yes Yes No Replace IC505 No 3rd 1.8V Is 1.8V outputting it from IC508-pin 3 ? Yes Replace IC508 No 1st 3.3V Is 3.3V outputting it from IC305-pin 3 ? Yes Replace IC305 No 1st 1.8V Is 3.3V outputting it from IC307-pin 3 ? Yes Replace IC307 No 1st 1.8V Is 1.8V outputting it from IC306-pin 3 ? Yes Replace IC306 No 2nd 3.3V Is 3.3V outputting it from IC415-pin 3 ? Yes Replace IC415 No 2nd 1.8V Is 1.8V outputting it from IC416-pin 1 ? Yes Replace IC416 No Digital Is 5V outputting it from Q101-collector ? Yes Replace Q101 No A RadioFans.CN 收音机爱 好者资料库 VSX-59TXi159 5678 56 7 8 C D F A B E Step 3 : DIR END Confirm the poor contact of lead wire of CN703-pin 4 ? START Coax 1 in MCK Is SPDIF signal coming to IC101-pin 42 ? Is outputting it from IC101-pin 23 ? Is there the signal of IC102-pin 5 ? Is there the signal of IC106-pin 6 ? YesYes IC102-pin 1 Is input signal L ? IC101-pin 31 Is input signal H ? Yes Replace IC101 Replace IC102 Replace IC106 Replace IC705 Replace IC704 Replace IC704 Yes Yes Yes No No No No IC101-pin 10 Is input signal L ? No Yes Replace IC101 or X101 IC101-pin 29 Is oscillating it ? No No Confirm the poor contact of JA108 No Demodulator(Only Demodulator input) Is 5V outputting it from Q210-collector ? Yes Replace Q210 No Demodulator RF Amp Is there the input of 5V to Q212-emitter ? Yes Confirm the poor contact of lead wire of CN703-pin 6 ? NoCheck the MOTHER Assy and so on No Is 5V outputting it from Q212-collector ? Yes Replace Q212 No Is there the input of -5V to Q213-emitter ? Yes NoCheck the MOTHER Assy and so on No Is -5V outputting it from Q213-collector ? Yes Replace Q213 No A B RadioFans.CN 收音机爱 好者资料库 VSX-59TXi160 1234 1234 C D F A B E Step 3 : DIR Go to another step by input format afterward. LRCK Opt 4 in Coax 2 in SDTO BCK Is SPDIF signal coming to IC101-pin 3 ? Is outputting it from IC101-pin 24 ? Is there the signal of IC105-pin 6 ? Yes YesYes Coax 3 in Is SPDIF signal coming to IC101-pin 7 ? Yes No No No Replace IC101 Replace IC101 Replace IC101 Replace IC105 Replace IC104 Is outputting it from IC101-pin 25 ? Yes No Is outputting it from IC101-pin 26 ? Yes No Confirm the poor contact of JA107 Conf