Panasonic PT-EZ57 Service Manual ▷ View online
INF-35
SECTION 1 SERVICE INFORMATION
<EZ57>
■ No sound
A/J
[ANALOG]
Check the connections [JK1501] (AUDIO IN1/2), [JK1505]
(AUDIO IN3)
[DIGITAL]
Check the connections [JK8001] (HDMI1), [JK8002](HDMI2).
NG
Check the cable connection securely
J
[ANALOG]
Check the waveform at pins 2, 3, 22, 23 of connector [JK1504]
Check the waveform at pins 1 and 3 of connector [JK1505]
NG
J
Check connectors [JK1504], [JK1505] and peripheral
circuits
circuits
[ANALOG]
Check the cable connection between connectors [J01] - [A01]
NG
Replace the cable
J
[Common]
Check the waveform at pins 1, 2, 4, 5, 11, 12, 14, 15 of IC1501.
NG
J
Check IC1501 and peripheral circuits
A
[Common]
Check the waveform at pin 5, 10, 2, 13 of IC1202.
NG
A
Check IC1202 and peripheral circuits
OK
NO
OK
OK
OK
OK
Check each cable connection
No sound with built-in speaker
NO
Follow the section "Built-in speaker check"
No sound with external speakers
NO
Follow the section "AUDIO OUT check"
No sound with built-in and external speakers
A
[Common]
Check the waveform at pin 12 of IC1201.
NG
A
Check IC1201 and peripheral circuits
A
Replace [A]-P.C.Board
OK
INF-36
SECTION 1 SERVICE INFORMATION
<EZ57>
■ Built-in speaker check
■ AUDIO OUT check
A
Check the waveform at pins 1 and 3 of connector [A02]
NG
J
Check IC1201 and peripheral circuits
Replace speaker
A
Replace [A]-P.C.Board
OK
NG
A
[ANALOG]
Check the connection cable between connectors [A01] and
[J01]
NG
Replace the cable
J
Replace [J]-P.C.Board
A
Replace [A]-P.C.Board
NG
OK
DIS-1
SECTION
2
SECTION 2 DISASSEMBLY PROCEDURES
(2016-07)
CONTENTS
1. Parts Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIS-2
1.1. Electrical parts location (P.C.Boards)
1.2. Electrical parts location (Fans)
1.3. Mechanical parts location
1.4. Optical parts location
1.2. Electrical parts location (Fans)
1.3. Mechanical parts location
1.4. Optical parts location
2. Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIS-4
2.1. Disassembly flow chart
2.2. Air filter unit, air filter cover removal
2.3. Lamp and lamp cover removal
2.2. Air filter unit, air filter cover removal
2.3. Lamp and lamp cover removal
2.4. Top cover removal
2.5. Exhaust fan, [S], [A]/[J]-P.C.Board assy removal
2.6. Front cover removal
2.7. Lighting block removal
2.8. Lamp fans assy and lamp house removal
2.9. Power box removal
2.10. Duct assy removal
2.11. G, R/B, PBS intake fans removal
2.5. Exhaust fan, [S], [A]/[J]-P.C.Board assy removal
2.6. Front cover removal
2.7. Lighting block removal
2.8. Lamp fans assy and lamp house removal
2.9. Power box removal
2.10. Duct assy removal
2.11. G, R/B, PBS intake fans removal
3. Optical Parts Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIS-14
3.1. Disassembly flow chart
3.2. Polarizer-in removal
3.3. Projection lens/Optical block removal
3.4. Polarizer-out removal
3.5. Integrator lens block removal
3.6. Parts location and direction in the lighting case
3.2. Polarizer-in removal
3.3. Projection lens/Optical block removal
3.4. Polarizer-out removal
3.5. Integrator lens block removal
3.6. Parts location and direction in the lighting case
<Cable reforming> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIS-19
DIS-2
SECTION 2 DISASSEMBLY PROCEDURES
<EZ57>
1. Parts Locations
1.1. Electrical parts location (P.C.Boards)
1.2. Electrical parts location (Fans)
R/B intake fan
G intake fan
Power intake fan
Lamp intake fan
Lamp rear fan
PBS intake fan
Exhaust fan
Board name
Function summary
Board name
Function summary
A
Image processing system / CPU
P
Power supply
J
Signal input terminals
BQ
Ballast power / Ballast control
S
Control panel
K
AC inlet
V
Status LED
M1
Temperature sensor (Intake air)
M2
Temperature sensor (Exhaust air)
M3
Air flow sensor
M4
Filter switch detection
C
Lamp memory connection
R
IR receiver
K
BQ
J
M4
S
A
M1
V
R
C
M2
M3
P
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