《Onkyo-ASV610PRO-avr-sm维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《Onkyo-ASV610PRO-avr-sm维修电路原理图.pdf(50页珍藏版)》请在收音机爱好者资料库上搜索。
1、RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN
2、 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库
3、RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN
4、 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 NPN Transistor with Positive supply and +ve bias. Rectangular box shows DVM This typical circuit often seen in amplifier and power supply is a common approach to general application circuit design. This circuit is a normal configuration oft
5、en used in amplifiers having an inverted output. The output of Q1 at its emitter shall have a loss up to 650mv depending on the transistor gain. The circuit shall have an output proportional of input, less switching loss. The bias voltage is dependant on R3 value, which also defines Q1 emitter outpu
6、t DC voltage. Other condition may exist depending on the value of R4 and R5. Fig2 Fig3 Fig4 Unlike Fig 1, 2, and 3 fig 4 shows non- inverting output whose collector voltage can be switching opposite of the vb for Q1. The higher the vb at Q1 the lower the collector voltage will be. That is because mo
7、re biasing will cause Q1 to conduct more as the current flow through R4 is nominal compared the current to be drawn through R5. RadioFans.CN 收音机爱 好者资料库 PNP transistor used with Positive Power supply to Emitter and +ve biased. Rectangular box shows DVM In this kind of configuration the transistor is
8、biased by Positive voltage. Do to the characteristic of the PNP transistor reaction to a Positive supply at the emitter, the collector voltage will retain above the 600mv minimum switching voltage. Even when the vb (base bias voltage) reaches near 0vdc, the lowest the collector voltage will get is 6
9、50mv. Such configuration of a transistor is good where a circuit is expected to operate at high frequency and need not idle below the switching voltage. It also provides none inverting output. The transistor output is dependant of vb value, which can be trimmed by the resistor R3. Such circuit is of
10、ten used in video and like high frequency buffer circuit. It can also be used as sensory circuit or low-level amplifier. RadioFans.CN 收音机爱 好者资料库 ONKYO USA CORPORATION INFO/RESET_ALL 02/27/01 Technical Tip: The procedure given above will clear all consumer saved setup. It is therefore important to do
11、cument customer settings before performing reset. MODEL# FIRST SECOND COMPONENT DISPLAY TX-DS474/484 VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-DS555 CD POWER RECEIVER CLEAR TX-DS575/575X VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-DS656 CD POWER RECEIVER CLEAR TX-DS676 VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-DS747 CD
12、 POWER RECEIVER CLEAR TX-DS777 VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-DS787 VIDEO-1 REC OUT RECEIVER CLEAR TX-DS838 VIDEO-1 SPEAKER RECEIVER CLEAR TX-DS939 CD VIDEO-1 RECEIVER CLEAR TX-DS989 VIDEO-1 STAND-BY RECEIVER CLEAR DR-90 VIDEO-1 SPEAKER-A RECEIVER/DVD CLEAR LS-V900 SPEAKER- A/B STAND-BY RECEIVE
13、R/DVD CLEAR TX-SV210 CD POWER RECEIVER CLEAR TX-SV343/A-SV240 VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-SV373 VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-SV424/A-SV640 CD POWER RECEIVER CLEAR TX-SV434 CD POWER RECEIVER CLEAR TX-SV444/454 VIDEO-1 SPEAKER-A RECEIVER CLEAR TX-SV525/535 VIDEO-1 POWER RECEIVER CLEAR T
14、X-SV545/A-SV610 CD POWER RECEIVER CLEAR A-SV620/ VIDEO-1 POWER RECEIVER CLEAR TX-SV636 VIDEO-1 POWER RECEIVER CLEAR TX-SV646/A-SV420 CD POWER RECEIVER CLEAR TX-SV727 VIDEO-1 POWER RECEIVER CLEAR TX-SV828THX VIDEO-1 POWER RECEIVER CLEAR TX-SV919THX CD POWER RECEIVER CLEAR TX-SV303PRO MEMORY POWER REC
15、EIVER TEST TX-SV313PRO MEMORY POWER RECEIVER CLEAR TX-SV414PRO MEMORY POWER RECEIVER CLEAR TX-SV515PRO CD POWER RECEIVER CLEAR TX-SV515PROII CD POWER RECEIVER CLEAR TX-SV717PRO CD POWER RECEIVER CLEAR TX-SV909PRO CD POWER RECEIVER CLEAR TX-8210 STANDBY CD RECEIVER CLEAR TX-8211 TAPE-1 SELECT CTRL RE
16、CEIVER CLEAR TX-8410PRO VIDEO-1 POWER RECEIVER CLEAR TX-8511 VIDEO-1 SPEAKER-A RECEIVER CLEAR Technical Question only: Email to RadioFans.CN 收音机爱 好者资料库 Model: All What is a PCB ? Solution: PCB means Printed Circuit Board In early 1960, most (if not all) electronic assemblies were assembled in a poin
17、t-to-point fashion. All of the components were strung through the air, literally supported by their wire leads. Big parts were bolted or soldered to a heavy steel chassis and the smaller parts were strung between them. These assemblies proved to be nightmarish to assemble Q1 is biased by the supply
18、voltage -ve, variable depending on the value of R3. In such configuration Q1 can be turned off completely. The output of Q1 collector is equal to the vb less the 600mv loss within the transistor. Output should be expected to invert. Such configuration may be used as Voltage dependant switching and c
19、ontrol such as amplifier bias stage, ALC, and sensory circuits. The ability to vary the output of Q1 collector form zero to its maximum given supply voltage less the component switching loss, makes the circuit widely usable in the audio, video and general power supply manufacturing industry. The configuration is normal for PNP transistor with a negative voltage supply at its Emitter. RadioFans.CN 收音机爱 好者资料库