Sanyo DS13204 Service Manual page 10

ANTENNA CONNECTIONS
This receiver is designed for UHF/VHF reception. A 75 ohm
terminal is provided for UHF and VHF receptions. When
connecting a CATV antenna system, connect the 75 ohm
coaxial cable directly to the 75 ohm terminal. For 300 ohm
VHF antenna, use an adapter (not included with the TV set).
CIRCUIT PROTECTION
Fuse F601 (4A) is included in the AC line. This fuse must be
replaced with the proper fuse (see Parts List).
CAUTION
FOR CONTINUED PROTECTION AGAINST
A RISK OF FIRE, REPLACE ONLY WITH
THE SAME TYPE 4A, 125V FUSE.
ATTENTION : POUR MAINTENIR LA PRO-
TECTION
4A 125V
D' INCENDIE UTILISER UN FUSIBLE DE
RECHANGE DE MEME TYPE 4A, 125V.
+B VOLTAGE CHECK
Connect Voltmeter + lead to TJ1 135V and – lead to ground
(TE7). Connect receiver to AC 120V line. Tune receiver to an
active channel. Reset the picture controls to the AUTO
level. Voltage must measure between +133.0V and +137.0V.
If the voltage is out of this range, the power circuit must be
checked. No +B adjustment is provided on this chassis.
HORIZONTAL CENTERING ADJUSTMENT
1. Tune receiver to an active channel.
2. Check that picture is in the horizontal center of TV screen. If
picture is not centered horizontally, perform steps 3 ~ 6.
3. Turn off the receiver and disconnect the AC power cord
(120V AC line).
4. While pressing the MENU key, reconnect the AC power
cord. The Service Menu display will now appear.
5. Select NO. 41 HPS7HP (Horiz. Phase) with
6. Adjust the data with + or – key for horizontal center. To
turn off the Service Menu display, press the MENU key.
VERTICAL SIZE ADJUSTMENT
1. Tune receiver to an active channel.
2. Check the vertical size of the picture. If the vertical size is
too large or small, perform steps 3 ~ 6.
3. Turn off the receiver and disconnect the AC power cord
(120V AC line).
4. While pressing the MENU key, reconnect the AC power
cord. The Service Menu display will now appear.
5. Select NO. 42 VS (Vertical Size) with
6. Adjust the data with + or – key for full scan. To turn off
the Service Menu display, press the MENU key.
VERTICAL CENTERING ADJUSTMENT
1. Tune receiver to an active channel.
2. Check that picture is in the center of TV screen. If picture
center is too low, add resistor R513 (470 ohm, 1W). If picture
center is too high, add resistor R512 (470 ohm, 1W).
SERVICE ADJUSTMENTS (Continued)
CONTRE LES RISQUES
or
or key.
GRAYSCALE ADJUSTMENT
1. Set the picture controls to the Auto levels (use MENU
key and or
2. Turn off the receiver and disconnect the AC power cord
(120V AC line).
3. While pressing the MENU key, reconnect the AC power
cord. The Service Menu display will now appear.
4. Select NO. 47 RB (Red Bias), NO. 48 GB (Green Bias),
and NO. 49 BB (Blue Bias) with
data to 00 with + or – key.
5. Select NO. 4A RD (Red Drive) and NO. 4C BD (Blue Drive)
with or key and set each data to 40 with + or – key.
6. Set NO. 3C SCO (Sub Color) data to 1D, NO. 3D STI (Sub
Tint) to 08, NO. 3E SB (Sub Brightness) data to 20, NO. 3F
SSH (Sub Sharpness) data to 05, and NO. 4B GD (Green
Drive Reduction) data to 0B with
7. Turn Screen Control (T402) to minimum (fully counter-
clockwise).
8. Select the Service Menu NO. 90 (Bias Adjustments – No
Vertical Sweep) with
9. Advance Screen Control (T402) clockwise to obtain just
visible one color line. If line does not appear, place this
control to maximum (fully clockwise).
10. Raise each Bias Level with 3, 6, and 9 keys to obtain just
visible white line. (See Figure 4.)
1 2
(N/A)
RB(–)
4 5
GB(–) (N/A)
7 8
BB(–) (N/A)
Figure 4. Remote Control Number keys' functions in
Service Menu NO. 90
11. Select the Service Menu NO. 8F DRV (Drive Adjustments)
key.
with or key.
12. Adjust Red and Blue Drive Levels alternately with 1, 3,
7, or 9 key to produce normal black and white picture in
highlight areas. (See Figure 5.)
1 2
(N/A)
RD(–)
4 5
(N/A) (N/A)
7 8
BD(–) (N/A)
Figure 5. Remote Control Number keys' functions in
Service Menu NO. 8F DRV
13. Check for proper grayscale at all brightness levels.
To turn off the Service Menu display, press the MENU key.
Note: If Grayscale Adjustment is made after picture tube
replacement, check Brightness Level Adjustment.
FOCUS ADJUSTMENT
Adjust focus control (T402) for well defined scanning lines.
— 6 —
key or RESET key).
or
or
or key.
3
FOR RED BIAS ADJUSTMENT
RB(+)
6
FOR GREEN BIAS ADJUSTMENT
GB(+)
9 FOR BLUE BIAS ADJUSTMENT
BB(+)
FOR RED DRIVE ADJUSTMENT
3
RD(+)
6
(N/A)
FOR BLUE DRIVE ADJUSTMENT
9
BD(+)
key and set each
, and + or – keys.