Panasonic TH-37PW4 / TH-37PWD4 Service Manual ▷ View online
Power Source:
AC120V 50/60Hz (US model)
AC220-240V 50/60Hz (Except US model)
Power Consumption: 395 W (US model)
295W (Except US model)
1.2W (stand-by condition) (US model)
1.8W (stand-by condition)
(Except US model)
(Except US model)
0.9W (Power off condition) (US model)
1.6W (Power off condition)
(Expct US model)
Plasma Display panel: Drive method AC type
37-inch, 16:9 aspect ratio
Contrast Ratio
3000:1
Brightness Capability (Panel only) 650 cd / m
2
(As a set) 330 cd / m
2
Screen size:
818 mm (W)×461 mm (H)×939 mm
(diagonal)
(diagonal)
No. of pixels
408,960 (852 (W)×480 (H)) [2,556×480 dots]
Operating condition:
Temperature
34 °F - 104 °F (0 °C - 40 °C)
Humidity
20 % - 80 %
Applicable signals:
Color System
NTSC, PAL, PAL60, SECAM, Modified NTSC
Scanning format
525i (480i), 625i (575i), 525p (480p), 625
(575p), 750p (720p), 1125/60i, 50i, 24p, 24SF
(1080/60i, 50i, 24p, 24SF) ........SMPTE 274M
(575p), 750p (720p), 1125/60i, 50i, 24p, 24SF
(1080/60i, 50i, 24p, 24SF) ........SMPTE 274M
PC signals
VGA display
VGA
SVGA, SXGA, UXGA ...... (compressed)
Horizontal scanning frequency 15.5 - 110kHz
TH-37PW4
TH-37PWD4
TH-37PWD4
GP4D Chassis
Vertical scanning frequency 48 - 120Hz
Connection terminals:
AV
Video in
1.0 Vp-p (75-ohm)
S-VIDEO IN
(MINI DIN 4PIN)
(MINI DIN 4PIN)
Y: 1 Vp-p (75-ohm), C: 0.286 Vp-p
(75-ohm)
(75-ohm)
AUDIO IN
(RCA PIN JACK × 2)
(RCA PIN JACK × 2)
0.5 Vrms (high impedance)
COMPONENT/RGB
Y/G
1.0 Vp-p/composite (75-ohm)
0.7 Vp-p/non-composite (75-ohm)
P
B
/B
0.7 Vp-p (75-ohm)
P
R
/R
0.7 Vp-p (75-ohm)
HD
1.0 - 5.0 Vp-p (high impedance)
VD
1.0 - 5.0 Vp-p (high impedance)
AUDIO IN
(RCA PIN JACK×2)
(RCA PIN JACK×2)
0.5 Vrms (high impedance)
PC
(HIGH-DENSITY
D-SUB15PIN)
D-SUB15PIN)
R,G,B/0.7 Vp-p (75-ohm)
HD, VD/1.0 - 5.0 Vp-p (high
impedance)
impedance)
AUDIO IN (M3.5 JACK)
0.5Vrms (high impedance)
SERIAL
EXTERNAL CONTROL
TERMINAL (D-SUB9PIN)
TERMINAL (D-SUB9PIN)
RS-232C COMPATIBLE
SPEAKERS (External
speakers)
speakers)
6
9 8W×2 (10% THD)
Dimensions (W×H×D): 36.2” (920 mm)21.7” (550mm) 3.5” (89 mm)
Weight (Mass)
approx. 55.1 Ibs (25.0 kg) (main unit only)
approx. 64.4 Ibs (29.2kg) (with speakers)
Wide Plasma Display
Specifications
ORDER NO. ITD0109010C0
D10
1
Safety Precautions
4
1.1.
General Guidelines
4
2
Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
5
3
PCB Structure sheet of GP4D chassis
6
4
Service Hint
7
5
Location of Lead Wiring
8
6
Adjustment Procedure
9
6.1.
+B Set-up
9
6.2.
Driver Set-up
9
6.3.
Initialization Pulse Adjust
10
6.4.
P.C.B. (Printed Circuit Board) exchange
11
6.5.
Adjustment Volume Location
11
6.6.
Test Point Location
11
7
Serviceman mode
12
7.1.
CAT (computer Aided Test) mode
12
7.2.
IIC mode structure (following items value is sample data.)
14
8
Alignment
15
8.1.
NTSC panel white balance
15
8.2.
PAL/SECAM panel white balance
16
8.3.
Pedestal setting
18
8.4.
PC/RGB panel white balance
19
8.5.
HD/ 525i /525p panel white balance
21
8.6.
625i panel balance
23
8.7.
Sub brighness setting
24
9
Trouble shooting guide
26
9.1.
Self Check
26
9.2.
No Power (US model)
27
9.3.
No Power (Except US)
28
9.4.
No Picture
29
9.5.
Local screen failure
29
9.6.
D-Board
30
10 Option Setting
32
11 IC Block Diagram
35
12 Conductor Views
37
12.1. F-Board
37
12.2. P-Board (US model)
38
12.3. P1-Board (Except US)
41
12.4. P3, P5, P6, P7 and P8-Board (Except US)
44
12.5. HX-Board
46
12.6. HZ-Board (Option TY-37TM4Z)
47
12.7. J-Board
49
12.8. D-Board
51
12.9. C1, C2, C3 and C4-Board
54
12.10. SC-Board
56
12.11. SU and SD-Board
59
12.12. SS, SS2 and SS3-Board
61
12.13. H3, S1 and V1-Board
64
13 Block and Schematic Diagrams
65
13.1. Schematic Diagram Notes
65
13.2. Main Block (US model) Diagrams
66
13.3. Main (Except US) Block Diagram
67
13.4. Power (US model) Block Diagram
68
13.5. P-Board (US model) Schematic Diagrams
69
13.6. Power (Except US) Block Diagram
70
13.7. P1-Board (Except US) Schematic Diagrams
71
13.8. F and P3-Board (Except US) Schematic Diagram
72
13.9. P5, P6, P7 and P8-Board (Except US) Schematic diagram
73
13.10. HX and H Block Diagram
74
13.11. HX-Board Schematic Diagrams
75
13.12. H-Board (Option TY-42TM4H) Schematic Diagram
76
13.13. HZ Block Diagrams
77
13.14. HZ-Board (1/2) (Option TY-37TM4Z) Schematic Diagram
78
13.15. HZ-Board (2/2) (Option TY-37TM4Z) Schematic Diagram
79
13.16. J-Board Block Diagrams
80
13.17. J-Board (1/5) Schematic Diagrams
81
13.18. J-Board (2/5) Schematic Diagrams
82
13.19. J-Board (3/5) and H3-Board Schematic Diagrams
83
13.20. J-Board (4/5) Schematic Diagrams
84
13.21. J-Board (5/5) Schematic Diagrams
85
13.22. D-Block Diagrams
86
13.23. D-Board (1/14) Schematic Diagrams
87
13.24. D-Board (2/14) Schematic Diagrams
88
13.25. D-Board (3/14) Schematic Diagrams
89
13.26. D-Board (4/14) Schematic Diagrams
90
13.27. D-Board (5/14) Schematic Diagrams
91
13.28. D-Board (6/14) Schematic Diagrams
92
13.29. D-Board (7/14) Schematic Diagrams
93
13.30. D-Board (8/14) Schematic Diagrams
95
13.31. D-Board (9/14) Schematic Diagrams
96
13.32. D-Board (10/14) Schematic Diagrams
97
13.33. D-Board (11/14) Schematic Diagrams
98
13.34. D-Board (12/14) Schematic Diagrams
99
13.35. D-Board (13/14) Schematic Diagrams
100
13.36. D-Board (14/14) Schematic Diagrams
101
13.37. C1-Board Schematic Diagrams
102
CONTENTS
Page
Page
2
TH-37PW4 / TH-37PWD4
13.38. C2-Board Schematic Diagrams
103
13.39. C3-Board Schematic Diagrams
104
13.40. C4-Board Schematic Diagrams
105
13.41. SC-Board Block Diagrams
106
13.42. SC-Board (1/2) Schematic Diagrams
107
13.43. SC-Board (2/2) Schematic Diagrams
108
13.44. SU/SD Block Diagram
109
13.45. SU-Board Schematic Diagrams
110
13.46. SD-Board Schematic Diagrams
111
13.47. SS-Board Block Diagrams
112
13.48. SS, SS4, SS5 and S1-Board Schematic Diagrams
113
14 Parts Location
115
15 Mechanical Replacement Parts List
117
15.1. US model
117
15.2. Except US model
117
16 Replacement Parts List
120
16.1. Relpacement Parts List Notes
120
16.2. US model Electrical Replacement Parts List
121
16.3. Expect US model Electrical Replacement Parts List
140
16.4. Option (TY-37TM4Z) Replacement Parts List
161
3
TH-37PW4 / TH-37PWD4
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the two
prongs on the plug.
2. Measure the resistance value, with an ohmmeter, between
the jumpered AC plug and each exposed metallic cabinet
part on the equipment such as screwheads, connectors,
control shafts, etc. When the exposed metallic part has a
return path to the chassis, the reading should be between
1M
part on the equipment such as screwheads, connectors,
control shafts, etc. When the exposed metallic part has a
return path to the chassis, the reading should be between
1M
9 and 5.2M9.
When the exposed metal does not have a return path to
the chassis, the reading must be
.
Figure 1
1.1.2. Leakage Current Hot Check (See
Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an
isolation transformer for this check.
2. Connect a 1.5k
9, 10 watts resistor, in parallel with a 0.15µF
capacitors, between each exposed metallic part on the set
and a good earth ground such as a water pipe, as shown in
Figure 1.
and a good earth ground such as a water pipe, as shown in
Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more
sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the
voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the
above measurements.
6. The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current
equivalent) may be used to make the hot checks, leakage
current
must
not
exceed
1/2
milliamp.
In
case
a
measurement is outside of the limits specified, there is a
possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the
customer.
possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the
customer.
1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
4
TH-37PW4 / TH-37PWD4