Set-Up Adjustments; Preparations - Sony TRINITRON PVM-14N1A Service Manual

SECTION 3
SET-UP ADJUSTMENTS
3-1. PREPARATIONS (1)
Perform all adjustments after five minutes the power is turned
ON.
This set is provided with a service switch on the front panel that
can be used to make various adjustments. The operation method
of this switch is explained in detail below.
1. ENTERING THE SERVICE MODE
Simultaneously press both the [ENTER] key and [MENU] key
that do not display condition any menus. When *' Ver ***" is
displayed on the screen, press the [ENTER] key twice.
Range of Service Mode Display
2. SERVICE MODE DISPLAY
(1) This is the serial number for each of the service items.0-65.
(2) The service item a name displayed.
(3) This is the adjustment data for the service items that are now
stored in the RAM. Adjustments can be made by changing
these values, but as long as nothing is saved to the ROM the
adjustment values will be erased by turning off the power or
by input select, so please be careful.
(4) SAVE a displayed to the guidance.
3. FINISHING THE SERVICE MODE
Simultaneously press the [ENTER] key and the [MENU] key
shown in the display of the menu.
4. CHANGE OF SERVICE ITEMS
The item are returned with the [LINE-A] key and forwarded
with the [LINE-B] Key. When a key is continuously pressed, the
operation will be repeated.
5. CHANGE OF SERVICE DATA
The service data is made larger with the [ @ ] key and smaller
with the [ p ] key. When continuously pressing the keys, the
' operation will be repeated.
6. READING THE SERVICE DATA
For items with different adjustment data for each input line, re-
turn to the normal mode, switch the input , enter the service mode
again, and perform the adjustment.
For items with different adjustment data for every color stand-
ard, return to the normal mode, select COLOR SELECT in the
forcible mode, enter the service mode again, and perform the
adjustment.
7. WRITING OF SERVICE DATA
When writing data from the RAM to the ROM, press the [MENU]
key once and check that the SAVE display is shown in the guid-
ance, and then press the [MENU] key once again to display
SAVE J+. Not only the displayed data will be written, but all
data, so please be careful.
Note: The [LINE-A] and [LINE B] buttons of the A board must be
pressed after the service mode cabinet of SSM-14NI1E/
14N1U/20N1E/20N1U is removed.
Initial Setting of Service Data ROM
Common for Each Model
N DISP ITEM
| PKUN |
PKUN Peaking level undershoot
P | PKOV. Peaking level overshoot
CPKV Peaking level for chroma red
CCOR Coring level for chroma
peaking
Peaking level for chroma
ceKY blue (B-Y)
Trap filter characteristic
05 CFS broad/narrow (Include
NTSC, PAL and SECAM).
H.center of composite signal
06 H CENT (Video phase)
07
8
14inch | 20inch
nz ° <
B Ss
O.
0
02
03
04
3
3
3
an ies)
White drive value for meas-
WDRV
urement reserved
0 EWDM White drive measurement
disabled/enabled
VBSO V. blanking stop
AVST Start of active video
14
17
0
0
3
3
6E
190
14
i7
|__2DC |
| 10 |
| 11 | AGCREF _| Sync amplitude reference IDC 2DC
(V CENT)
Pie [SER [ven | on] vo
13 [vipeo s-prt_| Video sab bight 100 100
100
RGB maximum contrast
15 RGB CONT (Adjust for max point of 1ioD 10D
cont)
16 CLPGI__| Integral clamp Toop gain___[ if 1
6
eit petuy =| costae Tiss] pie
Current feed back pulse drive
19 |*DRIVE LIMIT | (Define the size of feedback IDO
= =
20 wut Amplitude color killer hys- 2
teresis
ae oe oe
level
2D
Start value for AGC gain 2D
Threshold level for beam
current limiter
{CA] {13E]
(BE)3$2> |(E1)<E5>
Time constant for beam cur-
rent limiter [N(8XS> |[718)<S>
Loop gain for beam current (809 [809]
limiter (B00)<NS> |(919)<805>
Minimum contrast for beam of
24 BCLTHR
25 BCLTM
26 BCLG
27 BCLMIN
value of contrast)
Interlace offset
current limiter (Define the
0
No oo
INTLC
Proportional H-PLL gain(H-
PLL defines the time con-
IFI stant of AFC from IF-1 and lE
43
| 28 |
Correction level for zooming (2A]
picture [2ARA (2A)<33>
(89C)
I>
<FFC>
(32)<33>
IF-2 which make movements
for AFC of H)
Integral H-PLL gain (H-PLL
defines the time constant of
AFC from IF-1 and IF-2
(33)<34>| IF2
which make movements for
AFC of H)
lana |=R CO | Red ewof
am<4o>[*G c/o | Greencutoff A 48 |
Jancais[*B OO | Bhecutof@ | |_|
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