JVC JVC AV-29VS24 29VX74 2984V CHASSIS free download

File name jvc_av-29vs24_29vx74_2984v_chassis_cw_sch.pdf

SCHEMATIC DIAGRAMS FLAT COLOUR TELEVISION AV-29VS24 AV-29VX74 /G AV-2984V /E CD-ROM No. SML200406 BASIC CHASSIS CW [AV-29VX74/G] [AV-2984V/E] [AV-29VS24] COPYRIGHT © 2004 Victor Company of Japan, Limited No.YA102 2004/6 AV-29VS24, AV-29VX74/G, AV-2984V/E NOTE ON USING CIRCUIT DIAGRAMS 1. SAFETY The components identified by the symbol and shading are critical for safety. For continued safety replace safety critical components only with manufactures recommended parts. STANDARD CIRCUIT DIAGRAM · Type No indication MY MM P P MPP MF TF BP TAN : Ceramic capacitor : Mylar capacitor : Metalized mylar capacitor : Polypropylene capacitor : Metalized polypropylene capacitor : Metalized film capacitor : Thin film capacitor : Bipolar electrolytic capacitor : Tantalum capacitor : [µH] : As specified : B1 : B2(12V) : 3.3V : 5V values are indicated 2. SPECIFIED VOLTAGE AND WAVEFORM VALUES The voltage and waveform values have been measured under the following conditions. (1) Input signal : Colour bar signal (3) Coils (2) Setting positions of each knob/button and No unit variable resistor : Original setting position when Others shipped (4) Power Supply (3) Internal resistance of tester : DC 20k/V (4) Oscilloscope sweeping time : H 20µs/div :V 5ms/div : Others S w e e p i n g t i m e i s specified (5) Voltage values : All DC voltage values Respective voltage Since the voltage values of signal circuit vary to some extent (5) Test point according to adjustments, use them as reference values. : Test point 3. INDICATION OF PARTS SYMBOL [EXAMPLE] · In the PW board · · · : R1209 R209 : Only test point display (6) Connecting method : Connector : Wrapping or soldering : Receptacle (7) Ground symbol : LIVE side ground : ISOLATED(NEUTRAL) side ground : EARTH ground : DIGITAL ground 4. INDICATIONS ON THE CIRCUIT DIAGRAM (1) Resistors Resistance value No unit : [] k : [k] M : [M] Rated allowable power No indication : 1/16 [W] Others : As specified Type No indication : Carbon resistor OMR : Oxide metal film resistor MFR : Metal film resistor MPR : Metal plate resistor UNFR : Uninflammable resistor FR : Fusible resistor 5. NOTE FOR REPAIRING SERVICE This model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND and the ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be taken for the following points. (1) Do not touch the LIVE side GND or the LIVE side GND and the ISOLATED(NEUTRAL) side GND simultaneously. If the above caution is not respected, an electric shock may be caused. Therefore, make sure that the power cord is surely removed from the receptacle when, for example, the chassis is pulled out. (2) Do not short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or never measure the LIVE side GND and ISOLATED(NEUTRAL) side GND at the same time with a measuring apparatus ( oscilloscope, etc.). If the above precaution is not respected, a fuse or any parts will be broken. Composition re