Mitsubishi Electric LT-40148 Service Manual page 46

Lcd flat panel television
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1
2
3
4
A
249B954-50 FOR ALL SIZES
B
249B954-80 FOR 52"
C
249B958-30 FOR 46"
D
Pin 11, 12 connection
for 46" only.
PA
PA
PC
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
E
452C354-20
452C354-20
46" and 52"Only
F
PWB-POWER:211A950
G
H
I
J
K
PWB-SOUND
L
PAH-SMT
452C534-10
M
249B953-80
V39++ only
N
O
5
6
7
8
24V
24V
24V
24V
40",46",52"
24V
GND
PANEL
CONNECTOR
GND
GND
GND
GND
24V
N.C.
24V
BACKLIGHT-ON-OFF
24V
DIMMING
24V
52"
N.C.
24V
MASTER
GND
PANEL
PHR-14
GND
CONNECTOR
GND
PHR-14
GND
GND
24V
24V
N.C.
24V
BACKLIGHT-ON-OFF
24V
DIMMING
46"
24V
N.C.
SLAVE
GND
PANEL
PHR-14
GND
CONNECTOR
GND
GND
GND
N.C.
BACKLIGHT-ON-OFF
DIMMING
N.C.
SLAVE
PD
7
6
5
4
3
2
1
DIMMING
INV-SW
INV-SHORT
INV-RELAY
PANEL-PWR
GND
PNL12V-SHORT
AC-OFF
MAIN-RELAY
21VA
21VA
A-GND
A-GND
PANEL-VCC
PANEL-VCC
GND
GND
12VSL
12VSL
12VSL
GND
GND
GND
452C349-50
1
2
3
4
5
PE
PA
452C953-90
PA-SMT
PE
5
4
3
2
1
BOSS
452C551-50
9VS
5VS
3.3VS
3.3VS
GND
SPDIF
GND
AVSW-R
AVSW-L
AVR-R
AVR-L
GND
SDA
SCL
AUDIO-RST
MUTE-SPKR1
PAH-SMT
PAH-SMT
452C535-20
452C535-10
249B953-60
SP-ARRAY
249B953-70
9
10
11
12
13
LCD-MODULE
PANEL
CONTROL
FI-RE51S-HF
(PWB CONNECTOR)
452C487-41
[PANEL CONNECTOR ]
[PANEL CONNECTOR ]
FI-RE51HL
FI-RE
FI-RE51HL
FI-RE
VR502
FI-RE51S-HF
(PWB CONNECTOR)
452C487-41
DIMMING
FRC
BACKLIGHT-ON-OFF
INV-SHORT
INV-RELAY
PANEL-PWR
DC-DC/IF
GND
PNL12V-SHORT
AC-OFF
AVSW/TUNE/OOB
MAIN-RELAY
21VA
21VA
A-GND
A-GND
PANEL-VCC
PANEL-VCC
GND
GND
DC-DC/IF
12VSL
12VSL
12VSL
GND
GND
GND
PWB-MAIN
9VS
5VS
3.3VS
3.3VS
GND
SPDIF
GND
249B954-10
AVSW-R
AVSW-L
AVR-R
AVR-L
GND
SDA
DC-DC/IF
SCL
AUDIO-RST
MUTE-SPKR1
DC-DC/IF
VLP39+++ ONLY
1
3
XA
PWB SBL
14
15
16
17
(PWB CONNECTOR)
FI-RE41S-HF
452C487-31
FI-RE41HL
FI-RE
FI-RE41HL
FI-RE
LE1
VR501
2
8
PA-H
1
3
4
5
6
7
9
10
PA-H
452C350-10
452C350-40
(PWB CONNECTOR)
DC-DC/IF
FI-RE41S-HF
452C487-31
FRC
ANT
RELAY
SYSTEM/RESET
249B953-30
KSC1
DC-DC/IF
KSC0
GND
N/C
N/C
N/C
SHIELD
IN3-Y
GND*
IN3-Pb
AVSW/TUNE/OOB
GND*
249B953-10
IN3-Pr
GND*
IN3-R
GND*
IN3-L
GND*
YUV-SW
CVBS-SW
DM-MEMORY
USB_VCC
DC-DC/IF
D1-
D1+
all models except VLP39++
USB_GND
GND
GND
452C350-50
ES
PA-H
ES_L
SMP
SMP
L_OUT+
1
L_SP
249B953-50
2
L_OUT-
SMP
1
R_OUT+
R_SP
2
R_OUT-
SMP
ES_R
22
18
19
20
21
PG 1.....BLOCK
VLP39+ - VLP39+++
RMC
5VSL
GND
* NOTES
5VSB
IR-IN
1. DC voltages were measured from points indicated to the circuit
GND
ground with a high-Z voltmeter
2. Wave form were taken with standard color bar signal.
452C349-60
3. TP13.etc. show test points.
4. CAPACITOR
PF, for numbers more than 1
Value
Not indicated
uF, for numbers less than 1
Dielectric
strength
Not indicated : 50V
No tolerance is indicated
Not indicated = +/- 10%
for electrolytic capacitor
and +/- 20%
Tolerance
G=+/-2%
P=+100%
Q=+30%
C=+/-0.25PF
J=+/-5%
-0%
-10%
D=+/-0.5PF
K=+/-10%
Z=+80%
T=+200%
F=+/-1PF
M=+/-20%
-20%
-0%
D=+/-2PF
1
STATUS-G
Not indicated
: Ceramic capacitor
2
STATUS-R
MF
: Polyester capacitor
3
LED
PP
: Polypropylene film capacitor
4
GND
ALM
: Aluminus electrolytic capacitor
Parts
TF
: Twin film capacitor
except
SC
: Semiconductor Ceramic capacitor
452C350-40
Type
for
I
MP
: Metalized paper
chips
MPP
: Metalized plastic film capacitor
VLP39+/++
MMF
: Metalized polyester capacitor
: Polyester polypropylene film
MF,PP
capacitor
PS
: Styrol capacitor
TAN
TANT
: Tantalum capacitor
or
+
: Electrolytic capacitor
NP
: Non polarized electrolytic
capacitor
Not indicated
: Ceramic capacitor chip
II
chips
+
: Electrolytic capacitor
NP
: Non polarized electrolytic
capacitor chip
1
STATUS-G
Not indicated
:
F or B (high dielrctric percentage)
Characteristic
2
STATUS-R
(Only ceramic
capacitor)
CH, SL, etc.
:
Temperature compensaing types
3
LED
4
5. RESITOR
GND
Not indicated
=
Ohm
K
=
1,000 Ohm
Value
M
=
1,000,000 Ohm
452C350-40
Parts except
Not indicated
= 1/4W or 1/6W
VLP39+++
Wattage
for chips
Chips
Not indicated
= 1/10W
Not indicated
= +/-5%
Toler
ance
D = +/-0.5%
J = +/-5%
F = +/-1%
K = +/-10%
Not indicated
: Carbon resistor
Parts
S
: Fixed composition resistor
Type
MB
: Metal oxide film resistor(Type B)
except
CE
I
: Cemented resistor
for
W
: Wire wound resistor
chips
M
: Metal film resistor
MP
: Metal plate cement resistor
ML
: Metal liner resistor
SYSTEM/RESET
KSC1
II
Not indicated
: chip resistor
chips
KSC0
GND
6. This is a basic schematic diagram. Some sets may be subject
to modification according to engineering improvement
452D362-40
7. Some parts are listed with a
symbol indicating saftey.
!
These parts must be replaced with the same part number.
SHADED COMPONENTS HAVE SPECIAL CHARACTERISTICS
IMPORTANT TO SAFETY. BEFORE REPLACING ANY OF
THESE COMPONENTS, READ CAREFULLY THE PRODUCT
SAFETY NOTICE IN THE SERVICE MANUAL. DON'T
DEGRADE THE SAFETY OF THE RECEIVERS THROUGH
IMPROPER SERVICING.
N/C
N/C
N/C
IN3-Y
GND*
IN3-Pb
GND*
IN3-Pr
GND*
IN3-R
GND*
IN3-L
GND*
YUV-SW
CVBS-SW
USB CABLE
SIDE-USB
PG 1.....BLOCK
CONTENTS
LT-40148 VLP39+
PG 2.....POWER
LT-46148 VLP39+
PG 3.....MAIN1 [DC-DC / IF]
PG 4.....MAIN2 [AV-SWITCH / TUNER / OOB]
LT-52148 VLP39+
PG 5.....MAIN3 [HDMI]
LT-46149 VLP39++
PG 6.....MAIN4 [DM-CORE (x240)]
LT-52149 VLP39++
PG 7.....MAIN5 [DM-MEMORY]
LT-46246 VLP39+++
PG 8.....MAIN6 [PROGRAMMABLE LOGIC DEVICE]
LT-52246 VLP39+++
PG 9.....MAIN7 [ANALOG-DIGITAL CONVERTOR]
PG 10....MAIN8 [ASIC]
PG 11....MAIN9 [ASIC MEMORY]
PG 12....MAIN10 [LVDS]
PG 13....MAIN11 [AUDIO]
PG 14....MAIN12 [TV MICRO]
PG 15....MAIN13 [POD]
VLP39++ and VLP39+++ ONLY
PG 16....MAIN14 [FRAME RATE CONTROL]
PG 17....MAIN15 [DDRAM]
PG 18....MISC
[SIDE / LED / CONTROL / PREAMP / SBL]
PG 19....SOUND (VLP39++ ONLY)
PAGE 1

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