Sony KV-28DS65U, Service Manual

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29
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ELECTRICAL ADJUSTMENTS
Service adjustments to this model can be performed
using the supplied Remote Commander RM-891.
HOW TO ENTER INTO SERVICE MODE
1. Turn on the main power switch of the set while pressing the
PROG + and PROG - buttons on the top panel.
2. ‘TT--’ will appear in the upper right corner of the
screen.
Other status information will also be displayed.
3. Press ‘MENU’ ‘MENU’ on the remote commander to obtain
the following menu on the screen.
4. Move to the corresponding adjustment item by pushing the
OK button up or down.
5. Push the OK button to the right to enter into the required
adjustment.
6. Press the ‘Menu’ button and ‘00’ on the Remote Commander
to quit the Service Mode when all adjustments have been
completed.
CENTRE ADJUSTMENT FOR 4:3 MODE
1. Input a Sony special pattern.
2. Switch the TV into Analogue 4:3 mode.
3. Enter into the service menu by pressing ‘TEST’ ‘TEST’ and
‘MENU’ ‘MENU’ on the remote commander.
4. Select ‘DA SDA9280’ from the ‘Devices’ menu.
5. The ‘DA SDA9280’ menu will appear on screen.
6. Adjust ‘29 BCKPOS’ so that the picture is in the centre of the
screen.
CENTRE ADJUSTMENT FOR DIGITAL MODE
1. Input a Digital test pattern.
2. Switch the TV into Digital mode.
3. Enter into the service menu by pressing ‘TEST’ ‘TEST’ and
‘MENU’ ‘MENU’ on the remote commander.
4. Select ‘Deflect.Cont SDA9361’ from the ‘Devices’ menu.
5. The ‘Deflect.Cont SDA9361’ menu will appear on screen.
6. Adjust ‘48 INT H PHASE’ so that the picture is in the centre
of the screen.
7. Adjust item 1 V size and item 2 V position so that the picture
is in the centre of the screen.
DEVICES
Init TV
Sound MSP3410D
Feature Box S87654
Deflect Cont. SDA9361
Deflect Cont.Subadjust
MCP CXA2101
Col.Dec.Main TDA9144
DA SDA9280
Line 23 Detection
Sub Adjust
Port Expander
Defl.Cont. SDA9361
1 V SIZE ADJ
2 V POSITION ADJ
3 V LINEARITY ADJ
4 S CORRECTION ADJ
5 H SIZE ADJ
6 PIN AMP ADJ
7 UPPER CORNER PIN ADJ
8 LOWER CORNER PIN ADJ
9 V BOW ADJ
10 PIN PHASE ADJ
11 V ANGLE ADJ
DA SDA9280
1 Int 444 ON
2 Int 422 ON
3 Incodc ON
4 Incodl OFF
5 Infor 1
6 Insneg ON
7 Trawid 7
8 Thresh 11
9 VinV Dependant on analogue or digital
10 UinV Dependant on analogue or digital
11 Cgrres 0
12 Cgr OFF
13 Ydel1 Dependant on analogue or digital
14 YinV OFF
15 Ygrres 0
16 Ygr OFF
17 Bcof Dependant on analogue or digital
18 Lcof Dependant on analogue or digital
19 Hcof Dependant on analogue or digital
20 Phacom 2
21 Cor ON
22 Comex OFF
23 Comp OFF
24 Readd 0
25 Ovsamp ON
26 Ovfilt ON
27 Backgr OFF
28 Hsdel 2
29 Bckpos 191
+ – + –
PROGR
CONTROL