Sharp PN-465E (serv.man3) Service Manual / Parts Guide ▷ View online
PN-465E
TROUBLESHOOTING
5 – 3
7. HARDWARE CHECK NG
6
8
1
2
4
3
5
7
Major sympton when NG
LED flashing pattern
Countermeasures
1 LCD 12V
The backlight does not light up.
The red LED blinks.
Refer to 7-1.
2 VIDEO 5V
Abnormal colors on the display.
3 AMP 3.3V
Sound is not reproduced.
4 AMP 9V
5 BACKLIGHT
The backlight does not light up.
6 THERMAL1
Automatic power OFF.
red
3 green 3 red 3 green 3 ...
Refer to 7-2.
7 THERMAL2
8 THERMAL3
7-1. The red LED blinks
Abnormality
No abnormality
Replace the abnormal part.
Replace the abnormal part.
No NG
Abnormality
Abnormality
NG
Is there any abnormality in the NG position?
Check the power for abnormality
.
Check the fuse for breakage.
Check the cable connection.
Check the cable connection.
Check the switch and the related parts for any abnormality.
Check the connection cable.
Check the switch PWB.
Check the switch PWB.
Check the I/F PWB 1 for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
To locate the abnormal position, perform a certain
operation or use a certain RS232C command to display
the diagnosis result.
operation or use a certain RS232C command to display
the diagnosis result.
7-2. The LED lights up in order of red
3 green 3 red 3 green.
Abnormality
No abnormality
Replace the abnormal part.
Replace the abnormal part.
Replace the abnormal part.
No NG
Abnormality
Abnormality
NG
Is there any abnormality in the NG position?
Is the unit properly installed?
Is the unit properly installed?
Check the switch and the related parts for any abnormality.
Check the connection cable.
Check the switch PWB.
Check the switch PWB.
Check the I/F PWB 1 for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
To locate the abnormal position, perform a certain
operation or use a certain RS232C command to display
the diagnosis result.
operation or use a certain RS232C command to display
the diagnosis result.
PN-465E
HARDWARE DESCRIPTIONS
6 – 1
CHAPTER 6. HARDWARE DESCRIPTIONS
1. CIRCUIT DESCRIPTIONS
1-1. POWER UNIT
The circuit is composed of the power unit (RDENC1010MPPZ) and the
filter block (RUITK1016MPPZ).
filter block (RUITK1016MPPZ).
■ General specifications
2. LCD UNIT
■ Color TFT LCD module LK460D3LZ19
This module is an active matrix, transmission-type, LCD display which
uses the amorphous silicon thin-film transistor (TFT: Thin-Film Transis-
tor) and enables color display.
The circuit is composed of the color TFT - LCD panel, the driver IC, the
The circuit is composed of the color TFT - LCD panel, the driver IC, the
control circuit, the power circuit, the inverter circuit, the backlight unit,
etc. As an interface, the LVDS (Low Voltage Differential Signaling) is
used to supply
used to supply
+
12V DC power and
+
24V backlight power, allowing
image and text display in 16,777,216 colors on a panel of 1920
×
RGB
×
1080 dots. This module also includes the DC/AC inverter which is
used to drive the lamp.
The backlight is of direct under system and is composed of 22 CCFT’s
(Cold Cathode Fluorescent Tubes).
• Screen size
: 116.809 cm (46 type) opposing corner
• Drive display area
: 1018.08 mm (H)
×
572.67 mm (V)
• Max. brightness
: 450 cd/m2 (Typ.)
• Backlight life
: 60,000 hour
*
* When the lamp is lighted continuously at Ta=25°C and the center
brightness reaches 50% of the initial value, it is judged as the life is
expired.
3. IF PWB 1
Temperature sensor/Optical sensor/Remote control/Switch/LED/
Inverter/LCD display is controlled.
3-1. INPUT AND OUTPUT SIGNAL
3-2. MAIN COMPLETE PARTS AND FUNCTION
Input rated
: AC100V-240V 50Hz/60Hz
Power
consumption
consumption
: 266W max.
(at 100V ac, 60Hz, rated load)
Output STB 5V
: 5.1V 1.5A
Output 5V
: 5.1V 1.0A
Output 12V
: 12.2V 4.0A
Output 24V
: 24.3V 11.0A
SPECIFICATIONS
USE CONNECTOR
PC signal
Analog input terminal
(VESA compliance)
(VESA compliance)
D-sub 15 pin
BNC
BNC
×
5
Digital input terminal
(DVI compliance)
(DVI compliance)
DVI-D terminal
Digital output terminal
(Daisy chain type)
(Daisy chain type)
DVI-D terminal
RS-232C input terminal
D-sub 9 pin
AV signal
Digital input terminal
DVI-D terminal
Composite video input
terminal
terminal
BNC
×
1
Component video input
terminal
terminal
BNC
×
3
Monitor
control
control
RS-232C output terminal
D-sub 9 pin
REFERENCE
PARTS NAME
PARTS FUNCTION
IC101
BR24L02F
Analog PC type DDC
·
EEPROM
IC107
LT6554 3ch
video
buffer
IC201
TFP503
DVI-D type TMDS receiver
IC204
BR24L02F
Digital PC type DDC
·
ROM1
IC205
BR24L02F
Digital PC type DDC
·
ROM2
IC301
TFP513
DVI-D type TMDS transceiver
IC302
SM5301CS
Video buffer with the built-in LPF
supporting the video signal band
supporting the video signal band
IC401
FLI8638
Scaler IC with built-in micropro-
cessor
cessor
IC402, 404
BR24L32FV
32kbit EEPROM
(The set data are saved.)
(The set data are saved.)
IC403
DS1374U-33
+
RTC with the watchdog function
supporting I2C
supporting I2C
IC406
PCF8575
16bit I/O expander supporting
I2C
I2C
IC501, 502
MT46V16M16P-5B
128Mbit DDR SDRAM
IC503
S29AL032D70
32Mbit flash memory
(program are saved.)
(program are saved.)
IC701
MAX3243
RS232C type transceiver/
receiver
receiver
IC702
TL16C2552
Dual UART with built-in FIFO
(used for RS232C communica-
tion)
(used for RS232C communica-
tion)
PN-465E
HARDWARE DESCRIPTIONS
6 – 2
4. IF PWB 2
The sound PWB is controlled.
4-1. INPUT AND OUTPUT SIGNAL
4-2. MAIN COMPLETE PARTS AND FUNCTION
5. TEMPERATURE SENSOR PWB
Watches the temperature of the unit by the temperature watch function IC.
6. OPTICAL SENSOR PWB
Watches lighting of the backlight by the light receiving element IC.
7. SWITCH PWB
Provided with the remote control light receiving section, the switch, and
the LED module.
SPECIFICATIONS
USE CONNECTOR
Audio
signal
signal
PC audio input terminal
φ
3.5 jack
AV audio input terminal
RCA
×
2
Audio output terminal
RCA
×
2
Speaker
output
output
Supporting 6
Ω speaker
Speaker terminal
REFERENCE
PARTS NAME
PARTS FUNCTION
IC1
MSP3440G
Sound processor
IC2
NJU26901
Digital audio type delay IC
IC3
YDA138
Audio amp
PN-465E
CIRCUIT DIAGRAM & PARTS LAYOUT
7 – 1
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
1/5
MSP cir
cuit of I/F2 PWB
AMP_+3.3V
AMP_+3.3V
AMP_+3.3V
AMP_+3.3V
AMP_+5V
AMP_+5V
AMP_+2.5V
AMP_+2.5V
AMP_+3.3V
AMP_+9V
AMP_+9V
AMP_+9V
AMP_+9V
AMP_+9V
MSTR_SCL
2
MSTR_SDA
2
RESET3440
2
2
AMP_L
2
AMP_R
2
OUT_MUTE
R
L
R
L
D5
1SS355
D5
1SS355
C6
4.7u(3216)
C6
4.7u(3216)
C13
470p
C13
470p
R22
10k
R22
10k
R29
3
3
R29
3
3
R25
100
R25
100
C3
330p
C3
330p
R8
47k
R8
47k
Q4
2SC2412KT146
Q4
2SC2412KT146
R11
47k
R11
47k
L2
LBC2016T3R3M
L2
LBC2016T3R3M
C12
1500p
C12
1500p
R33
3
3
R33
3
3
R36
10k
R36
10k
C23
2p
C23
2p
T_P4T_P4
C21
10u(2012)
C21
10u(2012)
2
3
1
D1
DAN217UT106
D1
DAN217UT106
C9
330p
C9
330p
R34
NA
R34
NA
R13
1k
R13
1k
1
2
3
Q1
2SD2704K
Q1
2SD2704K
R21
NA(10k)
R21
NA(10k)
R18
1.8k
R18
1.8k
b1
b2
a1,a2,a3,a4
b3
b4
CN1
LPR6520-G9
CN1
LPR6520-G9
L3
LBC2016T3R3M
L3
LBC2016T3R3M
C32
0.1u
C32
0.1u
R3
15k
R3
15k
R1
220
R1
220
C25
18000p
C25
18000p
R10
150
R10
150
Q3
2SC2412KT146
Q3
2SC2412KT146
R28
3
3
R28
3
3
R17
4
70
R17
4
70
C27
1500p
C27
1500p
T_P1T_P1
R7
470
R7
470
C11
0.1u
C11
0.1u
C28
470p
C28
470p
2
3
1
D6
DAN217UT106
D6
DAN217UT106
2
3
1
D4
DAN217UT106
D4
DAN217UT106
R20
NA(10k)
R20
NA(10k)
3
1
2
Q5
2SK3018
Q5
2SK3018
C30
1000p
C30
1000p
C7
0.1u
C7
0.1u
C18
10u(2012)
C18
10u(2012)
I2C_CL
2
I2C_DA
3
I2S_CL
4
I2S_WS
5
I2S_DA_OUT
6
I2S_DA_IN1
7
ADR_DA
8
ADR_WS
9
ADR_CL
10
DVSUP
11
DVSS
14
I2S_DA_IN2
17
NC
18
NC
19
NC
20
RESETQ
21
DACA_R
24
DACA_L
25
VREF2
26
DACM_R
27
DACM_L
28
NC
29
DACM_SUB
30
NC
31
SC2_OUT_R
33
SC2_OUT_L
34
VREF1
35
SC1_OUT_R
36
SC1_OUT_L
37
CAPL_A
38
AHVSUP
39
CAPL_M
40
AHVSS
44
AGNDC
45
SC4_IN_L
47
SC4_IN_R
48
ASG
49
SC3_IN_L
50
SC3_IN_R
51
ASG
52
SC2_IN_L
53
SC2_IN_R
54
ASG
55
SC1_IN_L
56
SC1_IN_R
57
VREFTOP
58
MONO_IN
60
AVSS
61
AVSUP
65
ANA_IN1+
67
ANA_IN-
68
ANA_IN2+
69
TESTEN
70
XTAL_IN
71
XTAL_OUT
72
TP
73
AUD_CL_OUT
74
NC
75
NC
76
D_CTR_I/O_1
77
D_CTR_I/O_0
78
ADR_SEL
79
STDBYQ
80
NC
1
DVSS
15
DVSS
16
DVSUP
12
DVSUP
13
NC
22
NC
23
NC
32
NC
41
NC
42
AHVSS
43
NC
46
NC
59
AVSS
62
NC
63
NC
64
AVSUP
66
IC1
MSP3440G-QA-C12
IC1
MSP3440G-QA-C12
C14
47000p
C14
47000p
1
2
3
CN2
LGY6502-0900C
CN2
LGY6502-0900C
R12
47k
R12
47k
2
3
1
D2
DAN217UT106
D2
DAN217UT106
+
CE3
22u/16V
+
CE3
22u/16V
+
CE2
22u/16V
+
CE2
22u/16V
T_P2T_P2
R15
1k
R15
1k
C20
10u(2012)
C20
10u(2012)
3
1
2
Q6
2SK3018
Q6
2SK3018
C22
10u(2012)
C22
10u(2012)
C5
10u(2012)
C5
10u(2012)
T_P6T_P6
R16
1k
R16
1k
R30
3
3
R30
3
3
+
CE1
3.3u/50V
+
CE1
3.3u/50V
C16
470p
C16
470p
C15
10u(2012)
C15
10u(2012)
R6
15k
R6
15k
C10
330p
C10
330p
C26
18000p
C26
18000p
R27
NA(4.7k)
R27
NA(4.7k)
1
2
3
Q2
2SD2704K
Q2
2SD2704K
R9
150
R9
150
C1
4.7u(3216)
C1
4.7u(3216)
R23
10k
R23
10k
C19
10000p(B)
C19
10000p(B)
L1 LBC2016T3R3M
L1 LBC2016T3R3M
R14
4
70
R14
4
70
R31
10k
R31
10k
C2
4.7u(3216)
C2
4.7u(3216)
R26
100
R26
100
R2
220
R2
220
SDI
1
LRI
2
BCKI
3
VSS
4
COUNT0
5
COUNT1
6
SDO
7
VDD
8
IC2
NJU26901E2
IC2
NJU26901E2
C24
2p
C24
2p
Y1
18.432MHz
Y1
18.432MHz
T_P3T_P3
R24
NA(4.7k)
R24
NA(4.7k)
R4
470
R4
470
2
3
1
D7
DAN217UT106
D7
DAN217UT106
R32
NA
R32
NA
C4
330p
C4
330p
R19
1.8k
R19
1.8k
C29
220p
C29
220p
T_P5T_P5
R5
47k
R5
47k
C8
4.7u(3216)
C8
4.7u(3216)
C17
1500p
C17
1500p
C31
1000p
C31
1000p
2
3
1
D3
DAN217UT106
D3
DAN217UT106
R35
0
R35
0
CH
APTER 7.
CIR
CUIT
DIA
G
RAM
& P
A
R
T
S LA
Y
O
UT
1
. CI
R
CUIT
DIA
G
R
A
M
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