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SECTION 1  SERVICE  INFORMATION

< DZ780/DW750/DX820 >

DG

DG

 Check the cable connection of JK6503/JK6504

 (SERIAL IN/OUT)

 Check the IC6501

 Replace the DG-P.C.Board

 Check the remote control cable

DG  Check the IC6511, JK6501, Q6506

 Connect the cables properly

 ● Cannot control at wired remote control

 Replace the DG-P.C.Board

 ■ REMOTE 2 IN does not respond

 Check the cable connection of JK6505 (REMOTE 2)

DG  The signal waveform can be detected at R6591

 when the remote control is operated

DG  The signal waveform can be detected at 6pin of

 IC6511 when the remote control is operated

DG

 ■ SERIAL IN/OUT does not respond

DG

 The signal waveform can be detected at 15 pin

 of IC6510 when a power is turned on and off

 by remote control

DG  Check the IC6510 and peripheral circuit

 Replace the DG-P.C.Board

DG

 The signal waveform can be detected at

 10, 12, 16, 17pin of IC6509 when the command

 is transmitted

 Connect the cables properly

DG  Check the IC6509 and peripheral circuit

OK

NG

NG

OK

OK

NG

NG

OK

NG

OK

NG

OK

INF - 40

SECTION 1  SERVICE  INFORMATION

< DZ780/DW750/DX820 >

DG

S

DG

 Replace the cable connector

DG  Check the cable connector between connectors

 DG7 and S1

 Replace the S-P.C.Board

 Replace the DG-P.C.Board

 The voltage at 2,3,4pin of DG7 connector is 3V

DG  The voltage at 5pin of DG7 connector is 3.3V

 when main power is turned on

DG  Replace the DG-P.C.Board

 ■ Controls of side panel does not respond

OK

NG

NG

OK

NG

OK

INF - 41

1. Parts Location　　　・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・  

DIS-2

1. 1. Electrical Parts Location (P.C.Board)
1. 2. Electrical Parts Location (Fan)
1. 3. Mechanism element parts location
1. 4. Optical parts location

2. Disassembly Instructions　　　・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・  

DIS-4

2. 1. Removal / insert procedure of flexible cable
2. 2. Disassembly flowchart
2. 3. Top cover removal
2. 4. Side cover (L), Side cover (R) and Front cover removal
2. 5. Signal processing block removal (DG-P.C.Board / A-P.C.Board)
2. 6. Ballast block removal (B-P.C.Board)
2. 7. Power supply unit removal
2. 8. Optical block removal (Lighting block / DMD block)
2. 9. Liquid cooling unit removal
2.10. WL-Module removal (Asia model dedicated communication circuit)

Illustrations may vary from the actual product.

SECTION 2  DISASSEMBLY PROCEDURES

< DZ780/DW750/DX820 >

 Relay Board (Front IR / Status LED)

 Relay Board (Lamp cover)

R2

M3

 Luminance sensor

R3

CW

R

 Rear IR / Lamp cover relay

M2

 Air flow sensor

M1

 Temperature sensor (Intake/Exhaust)

 Relay Board (Lens Mounter)
 Relay Board (Lighting block)

DG

 Digital signal processing / GEOMETRY

K

S

B

 Control Panel

 DMD drive

WL Module

 GSM receiver (Asia models only)

Board Name

Function summary

Board Name

Function summary

A

P

 Image processing system / CPU

 Power supply (DC-DC)

 Ballast power / Ballast control

 AC Inlet

 Color wheel index

RM

FM

RL

M1(Int)

L

R

P

FM

M1(Ext)

M2

R3

R2

S

DG

A

RM

K

M3

CW

B (LAMP1)

B (LAMP2)

L

RL

BALLAST FAN

EXHAUST1 FAN

POWER FAN

EXHAUST2 FAN

DMD FAN

LAMP1 FAN

LAMP2 FAN

CW FAN

WL Module

DIS-2