JVC LT-32SH6, LT-37SH6 Schematic
SCHEMATIC DIAGRAMS
LCD FLAT TELEVISION
LT-32SH6/A,
LT-37SH6
CD-ROM No.SML200607
[LT-37SH6/A]
/A
COPYRIGHT © 2006 Victor Company of Japan, Limited.
No.YA382
2006/7
LT-32SH6
/A
, LT-37SH6
/A
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)Internal resistance of tester
(4)Oscilloscope sweeping time
(5)Voltage values
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
: Original setting position
when shipped
: DC 20kΩ/V
: H
: V
: Othters
: All DC voltage values
20µs / div
5ms / div
Sweeping time is
specified
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board
: R1209
R209
Type
No indication
MM
PP
MPP
MF
TF
BP
TAN
(3)Coils
No unit
Others
(4)Power Supply
Respective voltage values are indicated
(5)Test point
: Test point
(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
: 9V
: Connector
: Receptacle
: Only test point display
: Wrapping or soldering
: B2 (12V
: 5V
)
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit : [Ω]
K
M
Rated allowable power
No indication : 1/16 [W]
Others : As specified
Type
No indication
OMR
MFR
MPR
UNFR
FR
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
Capacitance value
1 or higher : [pF]
less than 1
Withstand voltage
No indication : DC50[V]
Others : DC withstand voltage [V]
AC indicated
Electrolytic Capacitors
47/50[Example]: Capacitance value [µF]/withstand voltage[V]
: [kΩ]
: [MΩ]
: Carbon resistor
: Oxide metal film resistor
: Metal film resistor
: Metal plate resistor
: Uninflammable resistor
: Fusible resistor
: [µF]
: AC 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.YA382)2-1
CONTENTS
USING P.W.BOARD....................................................................................... 2-2
SEMICONDUCTOR SHAPES ...................................................................... 2-2
BLOCK DIAGRAM ........................................................................................ 2-3
CIRCUIT DIAGRAMS .................................................................................... 2-5
MAIN PWB CIRCUIT DIAGRAM ................................................................................................................ 2-5
IR PWB CIRCUIT DIAGRAM .................................................................................................................... 2-31
KEY PWB CIRCUIT DIAGRAM ................................................................................................................. 2-33
PATTERN DIAGRAMS .............................................................................. 2-35
MAIN PWB PATTERN .............................................................................................................................. 2-35
IR PWB PATTERN .................................................................................................................................... 2-37
KEY PWB PATTERN ................................................................................................................................ 2-37
USING P.W. BOARD
PWB ASS'Y name LT-32SH6/A LT-37SH6/A
MAIN P.W. BOARD
IR P.W. BOARD
KEY P.W. BOARD
DA-5097661600(PWB-0983-C) DA-5097661601(PWB-0983-C)
DA-5097661700(PWB-0984-C)
DA-5097663300(PWB-0994-C) DA-5097663301(PWB-0994-C)
DA-5097661701(PWB-0984-C)
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
CHIP TR
E
C
B
ECB
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
OUT
E
IN
IN OUTE
CHIP IC
N
N
B
(G)E(S)C(D)
TOP VIEW
1 N
1
ECB
ECB
1
1 N
C
BE
N
2-2(No.YA382)
N
1
N
N
BLOCK DIAGRAM
U601
TUNER
MAIN PWB
2IF/MPX 2IF/MPX
TUNER_OUT AVSV_L/AVSV_R MTS_L/MTS_R
CV_L/CV_R
PC_L/PC_R
DVB-AUDIO_L
DVB-AUDIO_R
P601
S-VIDEO
P601
V
P602
L/R
I033
AUDIO
CONTROL
TUNER_OUT
S_LUM S_CHR
COMP
I012
I020
AMP
KEY PWB
P008 P006
KPD KPD
P904 P611
L/R
SPEAKER(L)
L
P905
R
SPEAKER(R)
P903
HEADPHONE
IR PWB
REMOCON
RECIEVER
IR01
P603
Y/Pb/Pr
P603
L/R
PJ02
P604
PJ01
PC_VGA_IN
P005
P009
RED
GREEN
BLUE
I018
A-D
CONVERT
Y/CB/CR
I037
VIDEO SELECT/
YC SEP. /
RGB PROCESS/
LVDS FORMAT
CONVERSION
RIN0+/RIN1+/RIN2+/RIN3+/-
P003
LCD
PANEL
UNIT
I032
DR 8
DG 8
DB 8
EX_DHSIN/EX_DVSINPC_HS,PC_VS
ADDRESS
DATA
REMOTE
MEMORY
KPD
D001
LED1/LED2
I016
MAIN CPU
2-4(No.YA382)(No.YA382)2-3
INVERTER PWB
I013,I015
MEMORY
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM (1/13) SHEET1
SHEET 7,8
SHEET 7
SHEET 7
(No.YA382)2-5 2-6(No.YA382)
MAIN PWB ASS'Y (1/13)
PWB_0983_02
MAIN PWB CIRCUIT DIAGRAM (2/13) SHEET 2
MAIN PWB ASS'Y (2/13)
PWB_0983_02
2-8(No.YA382)(No.YA382)2-7
MAIN PWB CIRCUIT DIAGRAM (3/13) SHEET 3
SHEET 7
SHEET 8
SHEET 8
SHEET 8
SHEET12
SHEET12
SHEET12
AV_L_IN
SHEET 10
SHEET 10
SHEET 10
SHEET 10
MAIN PWB ASS'Y (3/13)
PWB_0983_02
(No.YA382)2-9 2-10(No.YA382)
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