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
µ 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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AV
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]
(C) [SHEET-3/3]
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
E1
E2
E3
V
V
V,Y,C
V,Y,C V,Y,C
Y,Pb,Pr
Y,Pb,Pr
Y,Pb,Pr
HD,VD
L/R
V6(TV1)
V7(TV2)(BS) VYC1(E1) VYC2(E2 VYC3(E3)
CY1(CS1)
CY2(CS2
L/R
L/R
L/R
QA01
M306V2ME
(Micro)
flash
E2P
ROM
reset
VAL_L VAL_R
L/R
L/R
SP_MUTE MUTE_A EXT_MUTE
A_MUTE MAIN_AFT PIP_AFT
Q510
TA1360AFG
Pb,Pr
Y
Ys,Ym,R,G,B
BUS1
BUS2
V_OUT_BLK
V_STOP_BLK
AFC
ABL
H_PHA_COM
ABL_SW
H_OUT
VP
NEW QS01 MM1631AJBE
HYPER SIGNAL board
HDMI module
Y,Pb,Pr Y,Pb,Pr
HDMI Analog_Audio
NEW QY501 TA1383
QY100 TC90A45 F
V(Y),C,Cb,Cr
V
V,(Y)
V(Y),C,Cb,Cr
V(Y),C,Cb,Cr
Y
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
O1
OUT2 (MON)
L/R
L/R
OUT1 (SPK)
L/R
L/R
L/R
L/R
MONO
IF & AUDIO board
sync_on_g
CS-2
CPT D-com
R,G,B,VM
H002:MVUS51A
To 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
HV mix Comp Sync
HD,VD
Analog
Filter
(Discrete)
QZ501 TC90A92AF G
Mechanical_SW
L/R
L/R

(SR81) (D801)
(D811~814)
(SR83)
Degauss Coil
Q840
MIP290
T840
Q801
STR-F6629B
T862
133V
26.5V
12V
8V
(HDMI)
(Micon Circuit), SR81
Degauss Relay
Deviation Circuit
Audio Circuit
Signal Processing Circuit
Signal Processing Circuit
Signal Processing 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
AV

(2/52)
2.5
2.5
2.5
5.0
5.0
3
45
34 5
1
1
2
2
34HF84
BEP (1/3)
SHEET-1/3

(3/52)
5.0
34HF84
BEP (2/3)
SHEET-2/3

(4/52)
321
1
2
3
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

(7/52)
34HF84
MICON (3/8)
SHEET-3/8

(8/52)
34HF84
MICON (4/8)
SHEET-4/8

(9/52)
34HF84
MICON (5/8)
SHEET-5/8

(10/52)
34HF84
MICON (6/8)
SHEET-6/8

(11/52)
34HF84
MICON (7/8)
SHEET-7/8

(12/52)
34HF84
MICON (8/8)
SHEET-8/8

(13/52)
34HF84
G-Hyper (1/3)
SHEET-1/3

(14/52)
34HF84
G-Hyper (2/3)
SHEET-2/3

(15/52)
34HF84
G-Hyper (3/3)
SHEET-3/3

(16/52)
1
2
3
1
2
3
34HF84
AD-CONVERTER (A)
SHEET-1/3