Hitachi CM61SET, CM615ET-321, CM615ET-302, CM615-303 Schematic
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
CAUTION:
Before servicing this chassis, it is important that the service technician read the “Safety
Precautions” and “Product Safety Notices” in this service manual.
No. 0502
CM615ET
CM615ET302
CM615ET303
CM615ET321
Data contained within this Service
manual is subject to alteration for
improvement.
ATTENTION:
Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise
zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.
Les données fournies dans le présent
manuel d’entretien peuvent faire l’objet
de modifications en vue de perfectionner
le produit.
Die in diesem Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
OCTOBER 2000
1111. DISPLAY ALIGNMENT
A. Times & Display Size
For all presetting mode listing in section 2.4 shall be within the limitation:
H. WIDTH 306 ± 4 mm
V. HEIGHT 230 ± 4 mm
The external control range of the data area, shall be as follows;
Max. horizontal size : overscan the screen
Min. horizontal size : ≤ 285mm
Max. vertical size : over the screen
Min. vertical size : ≤ 202 mm
B. Picture Position
For all presetting mode listing in section 2.4 shall be within the limitation:
H.PHASE SCREEN CENTER ± 3 mm
V.CENTER SCREEN CENTER ± 3 mm
The external control ranges of display for all modes listed in section 2.4
H.POSITION ≥ 50 mm
V.CENTER ≥ 25 mm
C. Linearity
The CONTRAST and BRIGHTNESS control shall be properly adjusted at 20 F-L with Full-intensity
reverse pattern, then change to crosshatch Pattern 12x10 (Hx V), the size of grid of crosshatch pattern in
every display mode shall not vary than 10%.If two line is next to each other, 5% if they are not next to
each other. The calculation formula was listed below:
H max - H min V max V min
x100% or x 100%
(H max + H min) / 2 (V max + V min) / 2
1
D. Geometry Distortion (All Preset Mode) :
1) The Contrast and Brightnes s control shal l be proper ly adjusted at 20 F-L wit h full intens ity reverse pattern, then change to crosshatch pattern.
2) Pincushion distortion shall be less than H : 1.5% and V : 1.5%.
3) Barrel distortion shall be less than H : 1.5% and V : 1.5%.
4) Trapezoid and parallelogram distortion shall be less than H : 1.5% and V : 1.5%.
5) Distortion of four corners shall be less than 3mm x 3mm.
6) Parallelogram distortion shall be less than 2.0%
7) Tilt distortion shal l be less than 1/2 degree when facing east and less than 1 degr ee when turning around 360 degree.
8) Tilt distortion shall be less than 2 mm when facing east and less than 1 degree when turning around
360 degree The measurement of tilt is defined to measure the vertical axis with respect to the bezel,
the absolute value of the differe nce between the extreme lef t and right measurement of t he center
horizontal line.
E. Alignment Procedure
E-1. Brightness Adjust:
Adjust the VR980, have the +15VS By 14.9V±0.1V (The voltage of the C944) in TIMING 1.
Check below items.
The voltage of C949 : 179 ± 3V
C947 : 75 ± 2V
C946 : 44 ± 1.5V
C940 : 8.4 ± 0.4V
P990 : 12 ± 0.3V
Short-Circuit protection function check.
The power source is 230VAC input.
When short the C944, all output voltage should be shut down and unlatch.
When recover normal condition, all output voltage should recover automatically.
2
E-2. Light output adjust
Select Timing 1, preset BRI. And CONT. to max. position.
Adjust G2 to get G2 = 550V ± 10V
Adjust VR803 to get light output = 0.6FL ~ 0.5FL
Select Timing 2, adjust VR405 to get pattern over scan. (H SIZE 100%)
F. White Balance Adjustment (9300°as major temperature) Low light
adjust
9300° 6500° 5000°
x = 0.283 ± 10 x = 0.313 ± 10 x = 0.324 ± 10
y = 0.297 ± 10 y = 0.329 ± 10 y = 0.342 ± 10
Y = 0.6 ~ 0.8FL Y = 0.6 ~ 0.8FL Y = 0.6 ~ 0.8FL
Select Timing 6, adjust BRI. And CONT . to max. disconnect R. G . B. signals, adjust R/B BAIS to 100 scale
(OSD then solowl y adjus t G BAIS to 100 s cale adjust VR8 03 to get l ight outpu t = 0.6 ~ 0.8FL for 930 0,
repeat above steps for 6500 and 5000 R/B GAIN setting to get raster color temperature within specified,
finally, adjust BRI to get raster = 0.06FL.
High light adjust
9300° 6500° 5000°
x = 0.283 ± 10 x = 0.313 ± 10 x = 0.324 ± 10
y = 0.297 ± 10 y = 0.329 ± 10 y = 0.342 ± 10
Y = FL Y = FL Y = FL
Select Timing 4, measure 2 "square, set CONT. to Max, position and SUB-CONT to 127, R/B GAIN t o
200, G
GAIN to 200, adjust SUB-CONT to get light output = 50 FL for 9300, repeat above steps for 6500
and
5000 R/B GAIN setting to get color temperature within specified.
3. Select Timing 3 with full whit e pattern adjust OSD-ABL (SUB BRIGHTNESS) to get full white light
output = 30 ± 1 FL.
G. Focus Adjustment
G-1. Adjust brightness, have the brightness of raster be 0.06FL and contraset be 35FL in timming 6.
G-2. Adjust the G4a and G4b of theFBT, hav e focus be in the best c ondition on the 1/4 dia gonal of
screen in timing 5.
3
H. Convergence Adjustment
Input R+B and R+G signals, make sure convergence within specified (if not 4 pole and 6 pole). A zone =
0.3MM., B zone 0.4MM. (X) < 0.4MM, (Y) < 0.4MM.
NOTE : 1 A area = 230mm (circle)
2 B area = 306 x 230 mm
I. Presetting Modes Adjustment
There are totally 12 preset modes, individual adjust is needed.
H-SIZE adjust : adjust control key to get H-SIZE = 306 ± 2mm.
H-CENTER adjust : adjust control key to get center within ± 2mm
V-SIZE adjust : adjust control key to get V-SIZE = 230 ± 2mm
V-CENTER adjust : adjust control key to get center within ±2mm
Geometric adjust : adjust control key to get minimize distortion.
H-linearity check : check and make sure linearity meet spec..
(CROSS HATCH PATTERN 10X8)
2(MAX - MIN)
X100%
MAX + MIN
Any : <10%
Adjacent : <5%
V-linearity check : check and make sure linearity meet spec.
2(MAX - MIN)
X100%
MAX + MIN
Any : <10%
Adjacent : <6%
Geometric check : check and make sure geometric meet spec.
Get into OSD select EE-USER item, press ENTER till OSD disappear then turn off power, disconnect JP1,
turn on power again, make sure all of the alignment parameters has been stored properly, make H-SIZE
adjust range can OV ER SC AN and -5%, PHASE a djus t r an ge >1 5m m, V-SIZE adjust range can OVE R
SCAN and -6%, V-CENTER adjust range >20mm and make sure TILT adjust work properly.
4
J. Power Adjustment
J-1. Adjust the VR980, have the +15Vs be 15.3v±0.1v (the voltage of the C944) in timing 1.
J-2. Check below items the voltage of C949 : 179
C947 : 75
C946 : 44
C940 : 8.4
J-3. Short-circuit protection function check
the power source is 230vac input
when short the C944, all output voltage should be shut down and unlatch
when recover normal condition, all output voltage should recover automatically.
J-4. Side Pincushion, Tilt and Geometry Distortion Adjustment
1. Input timing 1, adjust the display be normal position and size.
±±±±
±±±±
±±±±
2v
1.5v
0.4v
±
3v
2. Adjust front control key to get the best pincushion distortion and tilt.
3. Select P502 and adjust VR402~VR404 to get the best geometry distortion.
J-5. Focus Adjustment
1. Input timing 1, EXT. BRIGHTNESS move to center position. Use EXT.CONTRAST set the
brightness to 25FL.
2. Adjust Focus VR (mounting on F.B.T), to get best focus.
5
J-6. Preset Timing Adjustment
1. Input each PRESET MODE timing, and use front control key adjust the display to the normal position
and size, and wait for 5 seconds.
2. Switch to next timing repeat 1 process. Until every PRESET MODE timing have been adjusted.
J-7. Timing And Pattern
Timing mode pattern.mdnm/
1 VESA 68.6k CROSS HATCH
2 VESA 68.6K 2" SQUARE
3 VESA 68.6K FULL WHITE
J-8. Power Saving Function Check
The power source is 230Vac input
When remove the sync signal, the monitor should enter suspend mode and then off mode.
When power saving, the power consumption of monitor should be less than: suspend mode 8w off mode
The monitor recovering time from suspend mode or off mode to on mode should be less than 5 seconds.
TABLE 1
TIMING MODE PATTERN
1. 64K
2. 37.8K/60HZ
3. 60K Full-white
4. 60K
5. 68K “me”
6. 68K
51 CROSSHATCH
51 CROSSHATCH
5×2″squares
5×2″squares
6
PRESETTING MODES TABLE2
D:display
1 VGA
IBM
2
VGA
3 VESA
4 VESA
IBM
5
VGA
6 VESA
7 VESA
8 VESA
VESA
9
IBM
XGA
10 VESA
11 VESA
12 VESA
13 VESA
640
350
640
480
640
480
640
480
720
400
800
600
800
600
800
600
1024
764
1024
768
1024
768
1152
864
1280
1024
25.175
P/N
25.175
N/N
31.5
N/N
36
N/N
28.321
N/P
40
P/P
49.5
P/P
56.25
P/P
65
N/N
78.75
P/P
94.5
P/P
108
P/P
108
P/P
31.469
70.087
31.469
59.940
37.5
75
43.269
85.008
31.468
70.085
37.879
60.317
46.875
75
53.674
85.061
48.363
60.004
60.023
75.029
68.677
84.997
67.5
75
63.981
60.02
31.778
14.268
31.778
16.683
26.667
13.333
13.111
11.764
31.468
70.085
36.4
16.579
21.333
13.333
18.631
11.756
20.677
16.666
16.66
13.328
14.561
11.765
14.815
13.333
15.63
16.661
25.422
11.122
25.422
15.253
20.317
12.8
17.778
11.903
31.778
14.268
20
15.84
16.162
12.8
14.222
11.179
15.754
15.88
13.003
12.795
10.836
11.183
10.667
12.8
11.852
16.005
B:backporc
h
907
1.875
907
1.0169
3.81
0.427
2.222
0.578
25.422
12.711
2.2
0.607
3.232
0.448
2.702
0.503
2.462
0.6
2.235
0.466
2.201
0.524
2.37
0.474
2.296
0.594
P:pulse F:front
3.813
0.064
813
0.064
2.032
0.08
1.556
0.069
1.907
1.0804
3.2
0.106
1.616
0.064
1.138
0.056
2.092
0.124
1.219
0.05
1.016
0.044
1.185
0.044
1.037
0.047
636
1.207
636
0.318
0.508
0.027
1.556
0.023
0.636
0.413
1
0.026
0.323
0.021
0.569
0.019
0.369
0.063
0.203
0.017
0.508
0.015
0.593
0.15
0.444
0.016
7
Fig. 2
Fig. 3
8
2. CONTROL AND CONNECT LAYOUT
Main PCB
9
B. Video PCB
10
C. Pin Assignment
C-1. Connect Function
VR501 : H-CENTER VR
P701 : TILT CONN
P8 : CANCEL COIL CONN
JP1: PRESET CONN
P902 : DEGAUSSING COIL CONN
P703 : X-RAY TEST PAD
-
1
2
3
4
5
6
12V -- GND --
7
8
P302 P303 P301 P5
HFLB Vout DSUB9 DDC-SCL
GND EEP-SCL R-IN DDC-SDA
G1 EEP-SCL GND GND
6.3V H-OUT B-IN V-SYNC
5V GND GND H-SYNC
75V -- G-IN --
CONTRAST -- -- --
11
3. Power Supply Portion
12
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