Toshiba 34HF84 Quick start guide

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 capacitor 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.

MODEL : 34HF84

SCHEMATIC DIAGRAM

SCHEMATIC DIAGRAM STRUCTURE:

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BEP (1/3) [SHEET-1/3]

(2/3) [SHEET-2/3]

(3/3) [SHEET-3/3]

MICON (1/8) [SHEET-1/8]

(2/8) [SHEET-2/8]

(3/8) [SHEET-3/8]

(4/8) [SHEET-4/8]

(5/8) [SHEET-5/8]

(6/8) [SHEET-6/8]

(7/8) [SHEET-7/8]

(8/8) [SHEET-8/8]

G-Hyper (1/3) [SHEET-1/3]

(2/3) [SHEET-2/3]

(3/3) [SHEET-3/3]

AD-CONVERTER (A) [SHEET-1/3]

(B) [SHEET-2/3]

TC90A92A-1

TC90A92A-2

GC-REG

TC90A92A-3

GNESIS (1/3) [SHEET-1/3]

(2/3) [SHEET-2/3]

(3/3) [SHEET-3/3]

SDRAM (Gm6010)

GNESIS OUT

GNESIS REG

CPU

PIP

Color Dec. (1/3) [SHEET-1/3]

(2/3) [SHEET-2/3]

(3/3) [SHEET-3/3]

Connector (1/3) [SHEET-1/3]

(2/3) [SHEET-2/3]

(3/3) [SHEET-3/3]

AV_Terminal (BANKAN) [SHEET-1/7]

(Tuner/IF_TIF) [SHEET-2/7]

(JACK) [SHEET-3/7]

(V_SW) [SHEET-4/7]

(A_SW) [SHEET-5/7]

(AUDIO_OUT) [SHEET-6/7]

(REG) [SHEET-7/7]

POWER/DEF (CONNECTOR) [SHEET-1/6]

(EW&VERTICAL) [SHEET-2/6]

(HORIZONTAL) [SHEET-3/6]

(PROTECTOR) [SHEET-4/6]

(MAIN POWER) [SHEET-5/6]

(SUB POWER) [SHEET-6/6]

CRT-D

CONTROL

LED

CIRCUIT BLOCK DIAGRAM (MAIN)

H001

ELA52LX4

=DEVICE CHANGE

NEW =NEW PARTS

SYNC_DET(sub)

SYNC_DET(main)

I2Bus

QX310 SD_RAM

V(Y),C

QX300

Gm6010

MST9883

24bit(4:4:4)

HD,VD

To C/C slicer(WSS DECORDE)

NEW

QV01 MM1630AQ

OUT2

(Bport)

OUT1

(Aport)

OUT4

(MON)

monitor out

CS-1

To V-chip slicer

(sub)

Y,C

V,Y,C

Y,Pb,Pr

HD,VD

L/R

V6(TV1)

V7(TV2)(BS)

VYC1(E1)

VYC2(E2

VYC3(E3)

CY1(CS1)

CY2(CS2

L/R

QA01

M306V2ME

(Micro)

flash

E2P

ROM

reset

VAL_L

VAL_R

L/R

SP_MUTE MUTE_A EXT_MUTE

A_MUTE MAIN_AFT PIP_AFT

Q510

TA1360AFG

Pb,Pr

Ys,Ym,R,G,B

BUS1

BUS2

V_OUT_BLK

V_STOP_BLK

AFC

ABL

H_PHA_COM

ABL_SW

H_OUT

NEW

QS01

MM1631AJBE

HYPER SIGNAL board

HDMI

module

Y,Pb,Pr

HDMI

Analog_Audio

NEW

QY501

TA1383

QY100

TC90A45

V(Y),C,Cb,Cr

V,(Y)

V(Y),C,Cb,Cr

Cb,Cr

HD,VD

Y,Cb,Cr,HD,VD

Y,Cb,Cr

HD,V

Y,C,Cb,Cr

IN1(TV1)

IN2(TV2)

IN3(E1)

IN4(E2)

IN5(E3)

IN6(CS1

IN7(CS2)

HDMI

OUT2

(MON)

L/R

OUT1

(SPK)

L/R

MONO

IF & AUDIO board

sync_on_g

CS-2

CPT

D-com

R,G,B,VM

H002:MVUS51A

Power/Def

HY01

ENG36A18GF

TV1 L,R in

L,R

out

QS102

VARI-AMP

RST

Q670

AUDIO OUT

L in

R in

L out

R out

CY3(CS3

8bit(656)or 16bit(601)

VYC4(E4) for Japan

OUT3

(Aport S)

Y,C

mix

Comp

Sync

HD,VD

Analog

Filter

(Discrete)

QZ501

TC90A92AF

Mechanical_SW

L/R

(SR81) (D801)

(D811~814)

(SR83)

Degauss Coil

Q840

MIP290

T840

Q801

STR-F6629B

T862

133V

26.5V

12V

(HDMI)

(Micon Circuit), SR81

Degauss Relay

Deviation Circuit

Audio Circuit

Signal Processing Circuit

Q832

9VRegulator

Q831

5V-2Regulator

Q838

3.3V2Regulator

Q833

5V-3Regulator

Q834

5V-4Regulator

5V-1

CIRCUIT BLOCK DIAGRAM (POWER SUPPLY)

(1/52)

34HF84

(2/52)

2.5

5.0

34 5

34HF84

BEP (1/3)

SHEET-1/3

(3/52)

5.0

34HF84

BEP (2/3)

SHEET-2/3

(4/52)

321

34HF84

BEP (3/3)

SHEET-3/3

(5/52)

34HF84

BEP (3/3)

SHEET-3/3

34HF84

MICON (1/8)

SHEET-1/8

(6/52)

34HF84

MICON (2/8)

SHEET-2/8

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