VPL-HW20, VPL-HW20A - Sony Projector Service Manual (repair manual). Page 5

1 (E)

VPL-HW20

2-1. Preparations 

...............................................................2-1 

(E)

2-1-1. Required 

Equipment 

........................................2-1 

(E)

2-1-2. 

How to Enter the Service Mode .......................2-1 (E)

2-1-3. 

How to Enter the Model Name Display 
(Shop Demonstration) Mode ...........................2-2 (E)

2-2. Service 

Know-How 

...................................................2-2 

(E)

2-2-1. 

When the Optical Unit Assembly is 
Replaced...........................................................2-2 (E)

2-2-2. 

When Replacing the QA Board .......................2-3 (E)

2-2-3. 

When Replacing the C Board ..........................2-3 (E)

2-2-4. 

When the GA, GB, HA, HB, NF, QB, TL, 
U, or V Board is Replaced ...............................2-3 (E)

2-3.  White Balance Adjustment ........................................2-4 (E)

2-3-1. 

High Mode of Video ........................................2-4 (E)

2-3-2. 

Middle Mode of Video .....................................2-4 (E)

2-3-3. 

Low Mode of Video .........................................2-5 (E)

2-3-4. 

Custom Setting .................................................2-5 (E)

2-3-5. Iris: 

Auto1/Manual 

Adjustment 

.......................2-5 

(E)

2-4. Adjust 

Value 

Writing 

.................................................2-6 

(E)

2-4-1. IRIS 

..................................................................2-6 

(E)

2-4-2. 

Panel Driver Gain B .........................................2-6 (E)

2-5. IRIS 

Adjustment 

........................................................2-6 

(E)

2-6.  Panel Driver Gain B Adjustment ...............................2-7 (E)
2-7.  Software Upgrade Method ........................................2-8 (E)

2-7-1. Preparation 

.......................................................2-8 

(E)

2-7-2. 

SUB CPU Upgrade ..........................................2-9 (E)

2-7-3. 

Scan Converter Upgrade ................................2-10 (E)

2-7-4. 

Data Write Method of LookUpTable/
3DGamma/ABGamma/DDC/OGMTable/
CSMatrixTable ............................................... 2-11  (E)

2-7-5. 

Data Obtain Method of LookUpTable/
3DGamma/ABGamma/DDC/OGMTable/
CSMatrixTable from the Board .....................2-13 (E)

2-8. Memory 

...................................................................2-15 

(E)

2-9.  Adjustment Item Initialize Data ..............................2-18 (E)

Purpose of this manual ............................................................ 3 (E)
Related manuals ...................................................................... 3 (E)

1-1.  Appearance Figure ....................................................1-1 (E)
1-2.  Board Locations ........................................................1-1 (E)
1-3. Disassembly 

..............................................................1-2 

(E)

1-3-1. 

Top Cover Assembly and HA Board ................1-4 (E)

1-3-2. 

HB Board and TL Board ..................................1-5 (E)

1-3-3. 

Front Cover Assembly .....................................1-5 (E)

1-3-4. 

NF Board .........................................................1-6 (E)

1-3-5. 

D.C. Fan (EX) ..................................................1-6 (E)

1-3-6. 

C Board-1 .........................................................1-7 (E)

1-3-7. 

C Board-2 and U Board ...................................1-8 (E)

1-3-8. 

C Board-3 .........................................................1-9 (E)

1-3-9. 

Optical Unit Assembly .....................................1-9 (E)

1-3-10.  D.C. Fan .........................................................1-10 (E)
1-3-11. 

GA Board ....................................................... 1-11 (E)

1-3-12.  GB Board ....................................................... 1-11 (E)
1-3-13.  Lamp Power Supply.......................................1-12 (E)
1-3-14.  QB Board .......................................................1-12 (E)
1-3-15.  D.C. Motor and V Board-1 ............................1-13 (E)
1-3-16.  D.C. Motor and V Board-2 ............................1-14 (E)
1-3-17.  QA Board .......................................................1-15 (E)

1-4.  Optional Fixtures .....................................................1-16 (E)

1-4-1. 

Extension Boards and Extension Cables .......1-16 (E)

1-4-2. Connection 

.....................................................1-17 

(E)

1-5. Indicator 

..................................................................1-19 

(E)

1-6.  Circuit Description ..................................................1-20 (E)
1-7.  Disconnecting/Connecting the Flexible Card 

Wires .......................................................................1-21 (E)

1-8.  Lead-free Solder ......................................................1-22 (E)