AV-28ED5BN, AV-28ED5SN CD-ROM

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2 AV-28ED5BN, AV-28ED5SN STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY The components identified by the symbol and shading are critical for safety. For continued safety replace safety ciritical components only with manufactures recommended parts. 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 3.INDICATION OF PARTS SYMBOL [EXAMPLE] In the PW board : R209 R209 : Original setting position when shipped (3)Internal resistance of tester : DC 20kΩ/V (4)Oscilloscope sweeping time : H 20µs / div : V 5ms / div : Othters Sweeping time is specified (5)Voltage values : All DC voltage values Since the voltage values of signal circuit vary to some extent according to adjustments, use them as reference values. Type No indication MM PP MPP MF TF BP TAN (3)Coils No unit Others (4)Power Supply : 9V : 5V Respective voltage values are indicated (5)Test point : Test point : Only test point display (6)Connecting method : Ceramic capacitor : Metalized mylar capacitor : Polypropylene capacitor : Metalized polypropylene capacitor : Metalized film capacitor : Thin film capacitor : Bipolar electrolytic capacitor : Tantalum capacitor : [µh] : As specified : B1 : Connector : Wrapping or soldering : Receptacle : B2 (12V) 4.INDICATIONS ON THE CIRCUIT DIAGRAM (1)Resistors Resistance value No unit : [Ω] K : [kω] M : [MΩ] 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 Composition resistor 1/2 [W] is specified as 1/2S or Comp. (2)Capacitors Capacitance value 1 or higher : [pf] less than 1 : [µf] Withstand voltage No indication : DC50[V] Others : DC withstand voltage [V] AC indicated : AC withstand voltage [V] Electrolytic Capacitors 47/50[Example]: Capacitance value [µf]/withstand voltage[v] (7)Ground symbol : LIVE side ground : ISOLATED(NEUTRAL) side ground : EARTH ground : DIGITAL ground 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 with a measuring apparatus measure with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND at the same time. If the above precaution is not respected, a fuse or any parts will be broken. Since the circuit diagram is a standard one, the circuit and circuit constants may be subject to change for improvement without any notice. NOTE Due improvement in performance, some part numbers show in the circuit diagram may not agree with those indicated in the part list. When ordering parts, please use the numbers that appear in the Parts List. (No.YA316)2-1

3 CONTENTS SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM FEATURE BOX PWB CIRCUIT DIAGRAM SIDE CONTROL PWB CIRCUIT DIAGRAM CRT SOCKET PWB CIRCUIT DIAGRAM SWITCH PWB CIRCUIT DIAGRAM LED PWB CIRCUIT DIAGRAM PATTERN DIAGRAMS MAIN PWB PATTERN FEATURE BOX PWB PATTERN CRT SOCKET PWB PATTERN LED PWB PATTERN SIDE CONTROL PWB PATTERN SWITCH PWB PATTERN USING P.W. BOARD P.W.B ASS Y name MAIN P.W. BOARD FEATURE BOX P.W. BOARD LED P.W. BOARD SIDE CONTROL P.W. BOARD SWITCH P.W. BOARD CRT SOCKET P.W. BOARD SEMICONDUCTOR SHAPES AV-28ED5BN VE VE VE VE VE VE AV-28ED5SN TRANSISTOR BOTTOM VIEW FRONT VIEW TOP VIEW CHIP TR E C B C ECB B C E E C B (G) (D) (S) E C B B E IC BOTTOM VIEW FRONT VIEW TOP VIEW OUT E IN IN E OUT 1 N 1 N 1 N CHIP IC TOP VIEW 1 N 1 N 2-2(No.YA316)

4 BLOCK DIAGRAM MAIN TUNER (PLL) PIP TUNER (PLL) PIP OPTION Saw Filter Video Saw Filter Saw Filter Sound TDA 9885/86 TDA 9885/86 27W401 (EPROM) GENERAL BLOCK DIAGRAM OF 11 AK 52 (VSP9405/07) Feature Box Module D0-D7 8 A0-A18 18 SDA5550M (MicroController) SDA SCL A0-A W32 (E2PROM) SRAM SMPS MC (MOTOROLA) + ACTIVE PFC MC (MOTOROLA) HORIZONTAL 150V/160V +22V +14V +14V(audio) -14V(audio) +8V +5V +3.3V +3.3V (ST-BY) +2.5V(ST-BY) KV 12V Horz. Yoke FOCUS SCREEN SC1_RGB 3 PIP_CVBS IF_CVBS TXT_CVBS 8 HORZ. DRIVE EW E/W DRIVE E/W -Vert.Sup -Vert.Sup Lin. +130V Heater VSP9405/07 ITU656 Output 2000 TXT RGB,FB YPbPr OSD RGB,FB DDP3315C VERT+ VERT- SENSE CRT BOARD TDA6109 Heater G2 SWM COIL FOCUS 30KV C R G SVM SCART3_CVBS B VERTICAL STAGE FAV_CVBS BSVM TDA8177F (VERT. OUT) Vert. Yoke SVHS Y,C SCART2 RGB 2 3 YPbPr SCART 1 SCART 2 SCART 3/ Back_AV Front_AV Back_V Back_A Front_V Front_A S3 S1 S2 MONO IN QSS C SVHS_C C_SW SCL SVHS SVHS_Y SC2_R(Scart2_C) SDA TDA L R HEADPHONE Center Surround AUDIO AMPLIFIER TDA 7480 L 8 ohm 12W R 8 ohm 12W QSS MSP 34XX AUDIO AMPLIFIER TDA 7480 C 8 ohm 12W MONO IN L R MAIN_R SR 8 ohm 12W MAIN_L (No.YA316) (No.YA316)

5 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/4) MAIN PWB ASS'Y (1/4) VE (No.YA316) (No.YA316)

6 MAIN PWB CIRCUIT DIAGRAM (2/4) MAIN PWB ASS'Y (2/4) VE (No.YA316) (No.YA316)

7 MAIN PWB CIRCUIT DIAGRAM (3/4) MAIN PWB ASS'Y (3/4) VE (No.YA316) (No.YA316)

8 MAIN PWB CIRCUIT DIAGRAM (4/4) MAIN PWB ASS'Y (4/4) VE (No.YA316) (No.YA316)

9 FEATURE BOX PWB CIRCUIT DIAGRAM (1/3) FEATURE BOX PWB ASS'Y (1/3) VE (No.YA316) (No.YA316)

10 FEATURE BOX PWB CIRCUIT DIAGRAM (2/3) NOTE : Refer to the part list for the part number of IC750 and IC751. FEATURE BOX PWB ASS'Y (2/3) VE (No.YA316) (No.YA316)

11 FEATURE BOX PWB CIRCUIT DIAGRAM (3/3) FEATURE BOX PWB ASS'Y (3/3) VE (No.YA316) (No.YA316)

12 SIDE CONTROL PWB CIRCUIT DIAGRAM SIDE CONTROL PWB ASS'Y VE (No.YA316) (No.YA316)

13 CRT SOCKET PWB CIRCUIT DIAGRAM SWITCH PWB CIRCUIT DIAGRAM CRT SOKECT PWB ASS'Y VE SWITCH PWB ASS'Y VE LED PWB CIRCUIT DIAGRAM LED PWB ASS'Y VE (No.YA316) (No.YA316)

14 PATTERN DIAGRAMS MAIN PWB PATTERN FRONT (No.YA316) (No.YA316)

15 FEATURE BOX PWB PATTERN FRONT (No.YA316) (No.YA316)

16 CRT SOCKET PWB PATTERN [SOLDER SIDE] TOP CRT SOCKET PWB PATTERN [PARTS SIDE] TOP (No.YA316)2-27

17 LED PWB PATTERN TOP SIDE CONTROL PWB PATTERN [SOLDER SIDE] TOP SIDE CONTROL PWB PATTERN [PARTS SIDE] TOP SWICTH PWB PATTERN FRONT 2-28(No.YA316)

18 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, , Japan (No.YA316) Printed in Japan VPT

SCHEMATIC DIAGRAMS FLAT COLOUR TELEVISION. AV-25VS24, AV-25VS24/A, AV-25VS14/H, AV-25VX54/S, AV-2584V/E CD-ROM No.SML BASIC CHASSIS

SCHEMATIC DIAGRAMS FLAT COLOUR TELEVISION. AV-25VS24, AV-25VS24/A, AV-25VS14/H, AV-25VX54/S, AV-2584V/E CD-ROM No.SML BASIC CHASSIS YA4 24 8 SCHEMATIC DIAGAMS FLAT COLOU TELEVISION AV-2S24, AV-2S24/A, AV-2S4/H, AV-254/S, AV-2584V/E CD-OM No.SML24 ASIC CHASSIS CW [AV-254/S] [AV-2584V/E] [AV-2S24] [AV-2S24/A] [AV-2S4/H] COPYIGHT 24 Victor