Toshiba 25SZ5VX Kurzanleitung

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY

PRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL.

CAUTION: The international hazard symbols " " in the schematic diagram and the parts list designate components

which have special characteristics important for safety and should be replaced only with types identical to those in the

original circuit or specified in the parts list. The mounting position of replacements is to be identical with originals.

Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE on the MANUAL for this

model. Do not degrade the safety of the receiver through improper servicing.

NOTE:

1. RESISTOR Resistance is shown in ohm [K = 1.000, M = 1.000.000]. All resistors are 1/6W and 5% tolerance

carbon resistor, unless otherwise noted as the following marks.

1/2R = Metal or Metal oxide of 1/2 watt 1/2S = Carbon compsistion of 1/2 watt

1RF = Fuse resistor of 1 watt 10W = Cement of 10 watt

K = ±10% G = ±2% F = ±1%

2. CAPACITOR Unless otherwise noted in schematic, all capacitor values less than 1 are expressed in

F, and

the values more than 1 in pF.

All capacitors are ceramic 50V, unless otherwise noted as the following marks.

Electolytic capacito Mylar capacitor

3. The parts indicated with " " have special characteristics, and should be replaced with identical parts only.

4. Voltages read with DIGITAL MULTI-METER from point indicated to chassing ground, using a color bar signal with

all controls at normal, line voltage at 220 volts.

5. Waveforms are taken receiving color bar signal with enough sensitivity.

6. Voltage reading shown are nominal values and may vary ±20% except H.V.

SCHEMATIC DIAGRAM

– 44 –

MODEL : 25CSZ5TR/25SZ5ST/25SZ5VX

SCHEMATIC DIAGRAM STRUCTURE:

– MAIN Circuit TUNER [ SHEET– 1/9 ] ........................ 1/11

– AV SW [ SHEET– 2/9 ] ........................ 2/11

– VERT [ SHEET– 3/9 ] ........................ 3/11

– HDEF [ SHEET– 4/9 ] ........................ 4/11

– VCD/MICON [ SHEET– 5/9 ] ........................ 5/11

– A-PRO/AUDIO-AMP [ SHEET– 6/9 ] ........................ 6/11

– PROTECTOR [ SHEET– 7/9 ] ........................ 7/11

– POWER [ SHEET– 8/9 ] ........................ 8/11

– LOW B REG [ SHEET– 9/9 ] ........................ 9/11

– CRT DRIVE Circuit ........................................................................................................................ 10/11

– FRONT AV Circuit .......................................................................................................................... 11/11

– 45–

CIRCUIT BLOCK DIAGRAM

– +

TUNER IF

H001 U903

QV01

QA51

QA10

T862

Q826

Q801

D801

Q301

Q901,Q903,Q905

SP_L/W/R

TV_VIDEO

AUDIO_L/R

TV_L/R

AV IN

(1)

AV IN

(2)

MEMORY

C BUS R

HYBRID

CONVERTER TRANS.

+B VOLTAGE

VIDEO

VIDEO DRIVE R/G/BR/G/B

V. DRIVE

V_DY_Y

V_DY_G

Q402-Q404

H. DRIVE

Q460-Q463,Q465

EN F.B.T.

H.V.

D.Y.

CRT

AV SW

C BUS CONTROL BLOCK

MONITOR

OUTPUT

AV IN

(FRONT)

(3)

SDA

SCL

V OUT

H OUT

POWER ON/OFF

HEAD PHONE

Q610

V901

AUDIO AMP

COMPONENT

VIDEO INPUT

PB/CB

PR/CR

Q841,Q842

RESET

VIDEO

MICROPROCESSOR

VIDEO

CHROMA

DEF

COMB

TEXT

SPECIFIC INFORMATIONS

(1/11)

4.5V 4.5V 5.0V 32 .0V

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (TUNER)

SHEET-1/9

(2/11)

3.8V

4.0V

4.5V

4.0V

3.8V

9.0V

5.2V

4.0V

5.2V

3.5V

3.3V

5.2V

4.0V

3.8V

3.4V

0V 0V

3.4V

4.0V

4.0V 9.0V

9.0V

4.5V

9.0V

3.9V

2.0Vp-p

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (AV SW)

SHEET-2/9

(3/11)

27.0V 0V

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (VERT)

SHEET-3/9

(4/11)

27.0V

0.4V

23.0V

-2.0V

-10V

150V

82Vp-p(H)

1000Vp-p(H)

115

150Vp-p(H)

27Vp-p(H)

120Vp-p(H)

280Vp-p(H)

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (HDEF)

SHEET-4/9

(5/11)

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (VCD/MICON)

SHEET-5/9

(6/11)

2.2V 0V 2.2V 9.9V 21.0V 9.7V

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (A-PRO/AUDIO-AMP)

SHEET-6/9

(7/11)

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (PROTECTOR)

SHEET-7/9

(8/11)

1.5V 40mV 14V 0V

51.0V

6.7 V

14.0V 1.1V

450Vp-p

(AC=220V)

25CSZ5TR/25SZ5ST/25SZ5VX

MAIN (POWER)

SHEET-8/9

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