Panasonic DMR-EH49EEA / DMR-EH59EEA Service Manual ▷ View online
45
10.3. Standard Inspection Specifications after Making Repairs
After making repairs, we recommend performing the following inspection, to check normal operation.
Use the following checklist to establish the judgement criteria for the picture and sound.
No.
Procedure
Item to Check
1
Turn on the power, and confirm items pointed out.
Items pointed out should reappear.
2
Insert RAM disc.
The Panasonic RAM disc should be recognized.
3
Enter the EE (TU IN / AV IN - AV OUT) mode.
No abnormality should be seen in the picture, sound or operation.
4
Perform auto recording and playback for one minute using the RAM
disc.
disc.
No abnormality should be seen in the picture, sound or operation.
*Panasonic DVD-RAM disc should be used when recording and
playback.
*Panasonic DVD-RAM disc should be used when recording and
playback.
5
Model with the HDD: Perform auto recording and playback for one
minute using the HDD.
minute using the HDD.
No abnormality should be seen in the picture, sound or operation.
6
If a problem is caused by a VCD, DVD-R, DVD-Video, Audio-CD,
MP3 or WMA (Except EH49A), playback the test disc.
MP3 or WMA (Except EH49A), playback the test disc.
No abnormality should be seen in the picture, sound or operation.
7
Models with USB Input Jack or DV Input Jack: In case of that the
trouble is caused by USB terminal and/or DV terminal.
trouble is caused by USB terminal and/or DV terminal.
Models with USB Input Jack or DV Input Jack;
1) USB terminal: Check to be able to display and copy the picture.
2) DV terminal: Check to be able to record from DVC.
1) USB terminal: Check to be able to display and copy the picture.
2) DV terminal: Check to be able to record from DVC.
8
After checking and making repairs, upgrade the firmware to the lat-
est version.
est version.
Make sure that [UPD OK] appears in the FL displays.
*[UNSUPPORT] display means the unit is already updated to new-
est same version. Then version up is not necessary.
*[UNSUPPORT] display means the unit is already updated to new-
est same version. Then version up is not necessary.
9
Transfer [9][9] in the service mode setting, and initialize the service
settings (return various settings and error information to their
default values. The laser time is not included in this initialization).
settings (return various settings and error information to their
default values. The laser time is not included in this initialization).
Make sure that [CLR] appears in the FL display.
After checking it, turn the power off.
After checking it, turn the power off.
Item
Contents
Check
Item
Contents
Check
Picture
Block noise
Sound
Distorted sound
Crosscut noise
Noise (static, background noise, etc.)
Dot noise
The sound level is too low.
Picture disruption
The sound level is too high.
Not bright enough
The sound level changes.
Too bright
Flickering color
Color fading
Flickering color
Color fading
S-1
S1. About Indication of The Schematic Diagram ............................ S-1
S1.1. Important Safety Notice......................................................... S-1
S2. Voltage and Waveform Chart ................................................... S-2
S2.1. Main P.C.B. ........................................................................... S-2
S2.2. Front R P.C.B. ....................................................................... S-3
S2.3. Power P.C.B. ......................................................................... S-3
S3. Block Diagram .......................................................................... S-4
S3.1. Main P.C.B. Power Supply Block Diagram ............................ S-4
S3.1.1. Main P.C.B. Power Supply Block Diagram (1) ................... S-4
S3.1.2. Main P.C.B. Power Supply Block Diagram (2) ................... S-5
S3.2. Main P.C.B. Analog Video Block Diagram ............................. S-6
S3.3. Main P.C.B. Analog Audio Block Diagram ............................. S-7
S3.4. Digital P.C.B. Analog Timer Block Diagram (EH49A/EH59A) .... S-8
S3.5. Digital P.C.B. Analog Timer Block Diagram (EX79A) .............. S-9
S4. Schematic Diagram ................................................................ S-10
S4.1. Interconnection Diagram ..................................................... S-10
S4.2. AV_IO (AV) Schematic Diagram .......................................... S-12
S4.3. M_NET (M) Schematic Diagram ......................................... S-16
S4.4. Tuner (TU) Schematic Diagram .......................................... S-20
S4.5. Front_L Schematic Diagram ............................................... S-24
S4.6. Front_R Schematic Diagram ............................................... S-24
S4.7. Power Schematic Diagram.................................................. S-26
S5. Print Circuit Board .................................................................. S-30
S5.1. Main P.C.B. ......................................................................... S-30
S5.2. Front L P.C.B. ...................................................................... S-34
S5.3. Front R P.C.B. ..................................................................... S-34
S5.4. Power P.C.B. ....................................................................... S-36
S6. Abbreviation ........................................................................... S-41
S7. Replacement Parts List .......................................................... S-45
S8. Exploded View ....................................................................... S-53
S8.1. Frame and Casing Section.................................................. S-53
S8.2. Packing Parts and Accessories Section .............................. S-54
Table of contents
Service Manual
DSD0907033CE
Diagrams and Replacement
Parts List
Vol. 1
(S)...........Silver Type (EH49ECA/EPA/EH495EGA, EH59ECA/EPA/EH595EGA,
EX79EGA/EPA)
Colour
(K)...........Black Type
Model No.
DMR-EH49ECA
DMR-EH49EEA
DMR-EH49EPA
DMR-EH495EGA
DMR-EH59ECA
DMR-EH59EEA
DMR-EH59EPA
DMR-EH59EMA
DMR-EH595EGA
DMR-EX79EBA
DMR-EX79ECA
DMR-EX79EGA
DMR-EX79EPA
DMR-EX79EFA
DVD Recorder
Name of Signal
OFTR
FEP
This signal is connected
to the FEP schematic diagram.
Circuit name being connected.
6.Use the parts number indicated on the Replacement Parts List .
7.Indication on Schematic diagrams:
7.Indication on Schematic diagrams:
5.The voltage being indicated here may be include observational-error (deviation) due to
internal-resistance and/or reactance of equipment. Therefore, handle the value
indicated on here as reference.
4.Although the voltage and waveform available on here is measured with standard frame,
it may be differ from actual measurement due to modification of circuit and so on.
3.The voltage being indicated on the schematic diagram is measured in
"Standard-Playback" mode when there is no specify mode is mentioned.
2.It is only the "Test Round" and no terminal (Pin) is available on the P.C.B.
when the TP (Test Point) indicated as " " mark.
1.Although reference number of the parts is indicated on the P.C.B. drawing and/or
schematic diagrams, it is NOT mounted on the P.C.B. when it is displayed with "$" mark.
FOR SAFETY. WHEN REPLACING ANY OF THESE COMPONENTS USE ONLY THE SAME TYPE.
COMPONENTS IDENTIFIED WITH THE MARK
HAVE THE SPECIAL CHARACTERISTICS
S1. About Indication of The Schematic Diagram
S1.1. Important Safety Notice
S-3
REF No. PIN No. REC
PB
EE
P7801
1
4.5
4.5
4.5
P7801
2
0
0
0
P7801
3
4.5
4.5
4.5
P7801
4
0
0
0
P7801
5
0.3
0.3
0.3
P7801
6
0
0
0
P7801
7
0.7
0.7
0.7
P7801
8
0
0
0
P7801
9
0
0
0
P7801
10
0
0
0
P7801
11
0
0
0
P7802
1
2.9
2.9
2.9
P7802
2
3
3
3
P7802
3
2.8
2.8
2.8
P7802
4
3.3
3.3
3.3
P7802
5
3
3
3
P7802
6
3.3
3.3
3.3
P7802
7
3.3
3.3
3.3
P7802
8
0
0
0
P7802
9
11.8
11.8
11.8
P7802
10
0
0
0
P7802
11
5.8
5.8
5.8
Q1501
1
5
5
5
Q1501
2
5
5
5
Q1501
3
2.5
2.5
2.5
Q1501
4
5
5
5
Q1501
5
5
5
5
Q1501
6
5
5
5
Q1509
1
12.3 12.3 12.3
Q1509
2
12.3 12.3 12.3
Q1509
3
6.2
6.2
6.2
Q1509
4
12.4 12.4 12.4
Q1509
5
12.3 12.3 12.3
Q1509
6
12.3 12.3 12.3
Q1600
1
12.4 12.4 12.4
Q1600
2
12.4 12.4 12.4
Q1600
3
12.4 12.4 12.4
Q1600
4
7.4
7.4
7.4
Q1600
5
6.1
6.1
6.1
Q1600
6
6.1
6.1
6.1
Q1600
7
6.1
6.1
6.1
Q1600
8
6.1
6.1
6.1
Q1730
1
3.8
3.8
3.8
Q1730
2
3.8
3.8
3.8
Q1730
3
8.5
8.5
8.5
Q1730
4
12.4 12.4 12.4
Q1730
5
3.8
3.8
3.8
Q1730
6
3.8
3.8
3.8
Q3001
E
5
5
5
Q3001
C
5
5
5
Q3001
B
4.3
4.3
4.3
Q4001
E
0
0
0
Q4001
C
0
0
0
Q4001
B
-0.1
-0.1
-0.1
Q4002
E
0
0
0
Q4002
C
0
0
0
Q4002
B
-0.1
-0.1
-0.1
Q4003
E
0
0
0
Q4003
C
0
0
0
Q4003
B
-0.1
-0.1
-0.1
Q4004
E
0
0
0
Q4004
C
0
0
0
Q4004
B
-0.1
-0.1
-0.1
Q7501
E
-18.5 -18.5 -18.5
Q7501
C
4.9
4.9
4.9
Q7501
B
-18.4 -18.4 -18.4
Q7502
E
12.3 12.3 12.3
REF No. PIN No. REC
PB
EE
Q7502
C
0
0
0
Q7502
B
12.2 12.2 12.2
Q7510
E
0
0
0
Q7510
C
9.2
9.2
9.2
Q7510
B
-0.1
-0.1
-0.1
Q7801
E
0
0
0
Q7801
C
0
0
0
Q7801
B
0.7
0.7
0.7
QR1501
E
0
0
0
QR1501
C
0
0
0
QR1501
B
3.3
3.3
3.3
QR1503
E
0
0
0
QR1503
C
0
0
0
QR1503
B
3.3
3.3
3.3
QR4001
E
5
5
5
QR4001
C
-0.1
-0.1
-0.1
QR4001
B
5
5
5
QR7501
E
0
0
0
QR7501
C
12.1 12.1 12.1
QR7501
B
0
0
0
QR7508
E
0
0
0
QR7508
C
-0.1
-0.1
-0.1
QR7508
B
0
0
0
QR7801
E
0
0
0
QR7801
C
0
0
0
QR7801
B
0.7
0.7
0.7
S2.2. Front R P.C.B.
S2.3. Power P.C.B.
REF No. PIN No. REC
PB
EE
IC7701
1
4.8
4.8
4.8
IC7701
2
0
0
0
IC7701
3
4.8
4.8
4.8
REF No. PIN No. REC
PB
EE
IC1150
1
3
3
3
IC1150
2
1.6
1.6
1.6
IC1150
3
0
0
0
IC1150
4
14.4 14.4 14.4
IC1150
5
0
0
0
IC1150
6
0
0
0
IC1150
7
-
-
-
IC1150
8
0
0
0
IC1150
9
-
-
-
IC1201
1
0
0
0
IC1201
2
0
0
0
IC1201
3
8.3
8.3
8.3
IC1201
4
2.4
2.4
2.4
Q1160
E
0
0
0
Q1160
C
9.3
9.3
9.3
Q1160
B
0.2
0.2
0.2
Q1200
1
1.5
1.5
1.5
Q1200
2
8.3
8.3
8.3
Q1200
3
0
0
0
Q1200
4
0
0
0
Q1220
1
9.3
9.3
9.3
Q1220
2
8.3
8.3
8.3
Q1220
3
0
0
0
Q1220
4
1.6
1.6
1.6
QR1220
E
0
0
0
QR1220
C
0
0
0
QR1220
B
5.1
5.1
5.1
T1150
1
0
0
0
T1150
2
-
-
-
T1150
3
-
-
-
T1150
4
-
-
-
T1150
5
-
-
-
T1150
6
-
-
-
T1150
7
0
0
0
T1150
8
0
0
0
T1150
9
-
-
-
T1150
10
-
-
-
T1150
11
-
-
-
T1150
12
-
-
-
<T1150>
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