Panasonic TC-51P100G / TC-51P100H Service Manual ▷ View online
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Service Position for DG-Board
Note: Extension cable kit for DG Board is supplied as service fixtures and tools.
(Part NO. TZSC07012)
DG unit
Remove DG unit
from A-Board
DG unit
Shield case
Shield case
DG-Board
Unsolder
A
Extension cable with 65 pins
connector (TZSC07012)
A
D
DG
Hotel Mode
Purpose
1. At Hotels, this Mode prevent customer from changing the TV preset data, such as Channel preset data.
Note : This Mode is useful for hotel, you should not get into " Hotel Mode" with Normal use.
Operation
1. To get into " Hotel Mode ", press the remote control " Off-Timer [
] " button and Channel up" [ ] " key on the
TV set simultaneously.
2. In this mode, The Channel up and down Function will be able as normal Mode, and The maximum volume level
for this mode is set at the current volume level, that means setting at the level before entering the mode.How-
ever, other function will be disable.
ever, other function will be disable.
3. To exit This mode, press the remote control " Off-Timer [
] " button and the "Volume Down [ - ] " key simul-
taneously.
* This Information is informed by Service Manual only.
* This Information is informed by Service Manual only.
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Disassembly For CRT Removal
To facilitate CRT replacement, the complete CRT
mounting chassis does not need to be removed.
1. Remove the Screen Frame Ass’y, Decorative
mounting chassis does not need to be removed.
1. Remove the Screen Frame Ass’y, Decorative
Panel and the Bottom Rear Cover Ass’y. ( See Dis-
assemble for Service ).
assemble for Service ).
2. From the Rear side, remove the defective CRT’s
anode lead from the Flyback Transformer block
that is mounted secured to the Main chassis E-
Board.
that is mounted secured to the Main chassis E-
Board.
3. Grasp the anode lead protective cap body inside,
and rotate 1/4 turn counter clockwise and pull
anode lead sleeve out of the distributor.
anode lead sleeve out of the distributor.
4. Discharge anode lead to CRT chassis metal
frame.
5. Unplug the defective CRT Dag ( GND ), from the
CRT Board, LBGND for LB, LGGND for LG,
LRGND for LR.
LRGND for LR.
6. Remove lead wires ( DY, VM coil ) and anode lead
wire from holders as necessary.
7. Remove the CRT Board from the defective CRT
neck.
8. Loosen a screw that secured the VM Coil and
remove SR/SG/SB Board from CRT neck.
FBT
Anode lead
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9. Note position of yoke with centering tabs and
remove from defective CRT.
10. From the Top, remove (2) screws from the defec-
tive CRT.
11. Release CRT anode lead from CRT chassis wire
clamp and all other wires from holders.
12. Wire the anode lead wire.
13. Lift out CRT assembly with lens assembly and
13. Lift out CRT assembly with lens assembly and
other CRT neck assemblies.
14. Lay CRT face down on a soft cloth.
15. Remove CRT lens by removing (4) screws.
15. Remove CRT lens by removing (4) screws.
16. Install yoke and VM coil with other CRT neck
assemblies on CRT neck in the same order and
position as removed from the defective CRT.
position as removed from the defective CRT.
17. Push yoke against bell of CRT and tighten the
clamp just snug enough so it will not easily shift.
18. Assemble CRT focus lens assembly to new CRT
with (4) screws. Make sure focus lens adjustment
nut is in the same location as on other CRT focus
lens.
nut is in the same location as on other CRT focus
lens.
Note: Please assemble with screws in the order
shown in detail and tighten with same torque.
(2) Screws
(for fixing CRT)
(for fixing CRT)
×
3
Front
(4) Screws (for fixing CRT)
1
4
3
2
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CRT Set Up
Caution: Insure yoke plugs on the A-Board are
reconnected before turning the Receiver
ON to prevent damage to the horizontal
output transistor and/or CRTs.
ON to prevent damage to the horizontal
output transistor and/or CRTs.
Dynamic Focus Adjustment
1. Focus adjustments should be performed after 1
hour of aging.
2. Use oscilloscope with 100 : 1 probe.
3. Apply monoscope pattern.
4. Adjust the Red, Blue and Green focus VR on the
3. Apply monoscope pattern.
4. Adjust the Red, Blue and Green focus VR on the
focus block for best focus of overall picture of each
CRT. (Fig. 2)
CRT. (Fig. 2)
5. Connect the scope probe to TPF1, GND to TPF2.
Scope set at 20V/div & 5m sec./dev.
6. Adjust R741 VR so that waveform (A) is 380V ±
20V. (Fig. 3)
7. Adjust R726 VR so that waveform (B) is 580V ±
30V. (Fig. 3)
11. Proceed with Focus Adjustments.
Focus - Electrical Adjustment
1. Receive a monoscope pattern.
2. Cover the Red and Blue CRT, projecting Green
2. Cover the Red and Blue CRT, projecting Green
only.
The electrical focus controls are located on the
front. Adjust the Green Focus VR for best focus of
overall picture. (Fig. 2)
The electrical focus controls are located on the
front. Adjust the Green Focus VR for best focus of
overall picture. (Fig. 2)
3. Repeat for Red focus VR while projecting Red
only.
4. Repeat for Blue. (Best focus at bottom left corner
of screen)
Focus - Optical Lens ADjustment
Note: This adjustment normally should not require
resetting unless the lens has been replaced or
adjustment has changed.
adjustment has changed.
1. Optical focus adjustment is located on the top of
each CRT lens system. Loosen the adjustment
knurls locking knob. (Fig. 4)
knurls locking knob. (Fig. 4)
2. Turn the Receiver ON apply and view a mono-
scope pattern.
3. Adjust each lens focus for best focus while viewing
each CRT.
4. Cover the Red and Blue CRT, projecting green
only.Rotate the Green lens for best focus around
screen center area.
screen center area.
5. Do the same for the Red focus lens while project-
ing Red only.
6. Repeat for Blue.
+
+
+
+
+
+
B
G
R
B
G
R
Screen adj. VR (3)
Focus adj. VR (3)
Focus Pack
Fig. 2
0
(B)
(A)
Fig. 3
Adjustment knurled
locking knobs
locking knobs
B
G
R
Optical lens focus adjustment
Fig. 4
(Rear view)
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