Panasonic PT-EZ770Z / PT-EZ770ZL / PT-EZ770ZD / PT-EZ770ZLD / PT-EZ770T / PT-EZ770TL / PT-EW730Z / PT-EW730ZL / PT-EW730ZD / PT-EW730ZLD / PT-EW730T / PT-EW730TL / PT-EX800Z / PT-EX800ZL / PT-EX800ZD / PT-EX800ZLD / PT-EX800T / PT-EX800TL Service Manual ▷ View online
INF-41
SECTION 1 SERVICE INFORMATION
■ No sound
A/J
[ANALOG]
Check the connections JK4002 (AUDIO IN3), JK4003 (AUDIO
IN)
[DIGITAL]
Check the connections JK1004 (HDMI), JK1007 (DIGITAL
LINK, JK1008 (DisplayPort)
NG
Check the cable connection securely
J
[ANALOG]
Check the waveform at pins 31 and 32 of connector [JK4007]
NG
J
Replace the [J]-P.C.Board
A
[ANALOG]
Check the cable connection between connectors [A28] -
[JK4007]
[JK4007]
NG
Replace the cable
S
[Common]
Check the waveform at pins 5 and 10 of IC1029.
NG
A
Check IC1016, IC1100 and peripheral circuits
A
[Common]
Check the waveform at pins 2 and 13 of IC1029.
NG
A
Check IC1029 and peripheral circuits
A
Replace [A]-P.C.Board
OK
NG
NG
NG
OK
OK
OK
OK
Check each cable connection
No sound with built-in speaker
Follow the section "Built-in speaker check"
No sound with external speakers
Follow the section "AUDIO OUT check"
No sound with built-in and external speakers
INF-42
SECTION 1 SERVICE INFORMATION
■ Built-in speaker check
■ AUDIO OUT check
A
Check the waveform at pins 1 and 3 of connector [A1]
NG
A
Check IC1028 and peripheral circuits
A
[ANALOG]
Check the connection cable between connectors [A28] and
[JK4007]
[JK4007]
NG
A
Replace cable
A
Replace speaker
J
Replace [J]-P.C.Board
A
Replace [A]-P.C.Board
A
Replace [A]-P.C.Board
OK
OK
OK
OK
DIS-1
CONTENTS
SECTION 2 DISASSEMBLY PROCEDURES
Disassembly Procedures
Model No. PT-EZ770Z / PT-EZ770ZL
PT-EW730Z / PT-EW730ZL
PT-EX800Z /PT-EX800ZL
1. Parts Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIS-2
1.1. Electrical parts location (P.C.Boards)
1.2. Electrical parts location (Fans)
1.3. Mechanical parts location
1.2. Electrical parts location (Fans)
1.3. Mechanical parts location
1.4. Optical parts location
2. Mechanical and Electrical Parts Disassembly . . . . . . . . . . . . . . . . . . . . . . . . .DIS-4
2.1. Disassembly flow chart
2.2. Projection lens removal
2.3. Air filter, filter cover removal
2.4. Lamp and lamp cover removal
2.2. Projection lens removal
2.3. Air filter, filter cover removal
2.4. Lamp and lamp cover removal
2.5. Top cover removal
2.6. [V]-P.C.Board, [A]/[J]-P.C.Board assy removal
2.7. Front cover removal
2.8. Lighting assy removal
2.6. [V]-P.C.Board, [A]/[J]-P.C.Board assy removal
2.7. Front cover removal
2.8. Lighting assy removal
2.9. Exhaust and lamp fans removal
2.10. Lamp house, thermal fuse removal
2.11. [S]-P.C.Board assy removal
2.12. Power box removal
2.13. Filter house removal
2.14. Intake duct assy removal
2.13. Filter house removal
2.14. Intake duct assy removal
2.15. Panel fans removal
3. Optical Parts Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIS-16
3.1. Disassembly flow chart
3.2. Shutter unit removal
3.2. Shutter unit removal
3.3. Optical block removal
3.3.1. Polarizer-out removal
3.4. Polarizer-in removal
3.5. Iris/Integrator lenses assy removal
3.6. Parts location and direction in the lighting case
3.5. Iris/Integrator lenses assy removal
3.6. Parts location and direction in the lighting case
<Cable reforming> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIS-22
(2013-11)
DIS-2
SECTION 2 DISASSEMBLY PROCEDURES
1. Parts Locations
1.1. Electrical parts location (P.C.Boards)
1.2. Electrical parts location (Fans)
Panel fan 1
K
J
M1
F
A
V
C
S
M2
BQ
P
Panel fan 2
Panel fan 3
Power fan
Lamp fan 2
Lamp fan 1
PBS fan
Exhaust fan
Board name
Function summary
Board name
Function summary
A
Image processingsystem / CPU
P
Power supply
J
Signal input terminals
BQ
Ballast power / Ballast control
S
Control panel
K
AC inlet
V
Status LED / IR receiver
M1
Temperature sensor (Intake air)
M2
Temperaturesensor (Exhaust air)
M3
Air flow sensor
F
Filter switch detection
C
Lamp memory connection
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