Mitsubishi Electric WD 73735 Service Manual

Page 21
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
Reset / Initialization Guide
Reset / Initialization
SERVICE TIP:
Many customer generated symptoms, intermittent symptoms or no symptom fo\
und can be resolved by using the
various Reset and Initialization options.  Before visiting the customer’\
s home ask the customer 1
st to try the System
Reset  button on the control panel and if this does not resolve the issue, the\
n they can...

Page 22
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
(Continued on Page 23)
INIT IAL S ETTIN GS
Audio/Video Setup Me nu (continued)
S ettin gs
Ant1  Cabl e --
V ideo Ant2  Ai r - - P ic ture Mode Br i lli ant Ant2  Cabl e - -
Brilliant Contrast 100% Edit
B r il lia nt B ri ghtn ess 50% Chann el i n M emo ry A ll
Color 50% Name --
T int 50% FAV1  ~ FA V6 un ch eck ed
S har pn es s 50% Loc k Unl oc k
Brilliant Color Temp. High Clock
D...

Page 23
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
A. A/V Memory
Each of the external inputs has it’s own Audio/Video Memory.  A change in an A/V setting at a specific input is
stored in memory for that specific input.
B. A/V Reset
1.  Pressing the front panel “GUIDE” and “FORMAT” buttons at the same time initializes all A/V Memories.
2.  The AV Reset in the user’s menu initializes only the selected input’s A/V Memory.
INITIAL...

Page 24
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
3 . Error Code Operational Check
Note: The TV must be in “Shut Down” and not have been switched Off, to p\
erform the Error Code Opera-
tional Check.  When the TV is switched Off, the code automatically resets to “12” No Error.
Pressing the front panel “INPUT” and “MENU” buttons at the s\
ame time, and holding for 5 seconds,
activates the Error Code Mode.  The “TIMER LED” flashes...

Page 25
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
4. Error Codes
The Error Code designations indicating malfunction, or no malfunction, a\
re listed below:
Code 34
(1)  - Lamp Enable is generated to activate the Lamp
Code 57
(2) - Lamp Enable is generated during P-ON sequence, but no Lamplit signal i\
s received from the Ballast.
Code 61
(3)  - No Lamp Enable is received at the DM and Ballast.
Code 66 
(4) - Lamp enable is received...

Page 26
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
Color Wheel Replacement
(Part # 938P137010)
1) Remove Engine assembly from the back of the unit.
2 ) Cover the projection lens to protect it from scratches and remove the TO\
P DUCT
3 ) Remove the 2 screws  (A) as shown in picture CW1
4 ) Disconnect the 2 connectors  (B) as shown in picture CW1 (J6 & J7 in CW2)
5 ) Lift the top cover to the color wheel chamber
Symptoms
•  Noise - Bad...

Page 27
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
Handle
Alignment Procedure
9) Once TV is reassembled and operating press   followed by the   button.
10 ) Press the   button 3 times to access the RAMP test pattern (as shown below).
11 ) Press Video button until item  #60.IDL is shown.
12 ) Adjust IDL value until RAMP pattern color bars are smooth and solid.
 (
Hint: Final value is typically in the mid 30’s)
6
) Remove 3 screws  (C)...

MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
Page 28
SERVICE ADJUSTMENTS
There are 3 Service Adjustments required in these models:
Electrical Adjustments (there are no mechanical adjustments)
• Horizontal Centering
• Vertical Centering
• 16 Point Keystone Alignment
• Letterbox Geometry
• 4:3 Geometry
Measuring Equipment and Jigs
• No additional Test Equipment is required.
• Remote Control
Test Signal
An internally generated Test Signal...

MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
Page 29
3. Adjustment Function Selection
Use the “AUDIO” button to select a specific Adjustment Function.
NOTE: There are 2 Service Functions on these models: “TVM” and the\
 “ASIC” function.  Service adjustments
are performed in the TVM mode.
4. Adjustment Selection
Use the “VIDEO” button to select a specific electrical adjustment,\
 “1.HVPOS”.
5. Adjusting Data
After selecting an...

MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / \
WD-73735 /WD-73736 / WD-73835 / WD-73C8
Page 30
2. Manual Keystone Geometry Alignment (There are 2 modes of adjustment:\
  FULL and TOUCH UP)
FULL ADJUSTMENT MODE:  Part 1
(
Note: if data is out of range, you may need to do a reset before startin\
g - press “1” then “ENTER”)
1. When entering the Keystone Adjustment mode you will see the test pattern shown in the drawing above\
. The point in the upper left corner will be a cross....