JVC AV-21L81B free download

File name 51853sch.pdf

AV-21L81B AV-25L81B AV-29L81B SCHEMATIC DIAGRAMS COLOUR TELEVISION BASIC CHASSIS CH AV-21L81B (-BK) AV-25L81B (-BK) AV-29L81B (-BK) CD-ROM No. SML200111 DISPLAY POWER DISPLAY POWER MENU SUPER BASS SUPER BASS MENU CHANNEL VOLUME CHANNEL VOLUME SYSTEM COLOUR SOUND MUTING SYSTEM COLOUR SOUND MUTING TV/VIDEO 1 4 7 2 5 8 0 3 6 9 -/-OFF TIMER TV/VIDEO 1 4 7 2 5 8 0 3 6 9 -/-OFF TIMER I/II I/II PICTURE MODE PICTURE MODE CHANNEL SCAN RETURN CHANNEL SCAN RETURN ECO SENSOR ECO SENSOR RM-C358 REMOTE CONTROL UNIT RM-C358 REMOTE CONTROL UNIT RM-C358-1C RM-C358-1C [AV-21L81B (-BK), AV-25L81B (-BK)] [AV-29L81B (-BK)] COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. No. 51853 Oct. 2001 AV-21L81B (-BK) AV-25L81B (-BK) AV-29L81B (-BK) STANDARD CIRCUIT DIAGRAM q 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. AV-21L81B AV-25L81B AV-29L81B · Type No indication MY MM PP MPP MF TF BP TAN (3) Coils No unit Others (4) Power Supply : B1 : B2(12V) : 9V : 5V : 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 2. SPECIFIED VOLTAGE AND WAVEFORM VALUES The voltage and waveform values have been measured under the following conditions. (1) Input signal : Colour bar signal (2) Setting positions of each knob/button and variable resistor : Original setting position when shipped (3) Internal resistance of tester : DC 20kШ/V (4) Oscilloscope sweeping time : H 20µS/div :V 5mS/div : Others Sweeping time is specified. (5) Voltage values : All DC voltage values 9 Since the voltage values of signal circuit vary to some extent according to adjustments, use them as reference values. 9Respective voltage values are indicated (5) Test point : Test point : 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 3. INDICATION OF PARTS SYMBOL [EXAMPLE] · In the PW board : R1209 R209 4. INDICATIONS ON THE CIRCUIT DIAGRAM (1) Resistors · Resistance value No unit : [Ш] k : [kШ] M : [MШ] · 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 : Non-Flammable 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(NEUT