Sub Color And Sub Hue Adjustments; Video Decoder Adjustment - Sony PFM-32C1 Service Manual

6) Adjust [Cb Offset Video] until the B detection value
agrees with the G detection value.
7) Adjust [Cr Offset Video] until the R detection value
agrees with the G detection value.
8) Repeat the above steps 5) to 7) until all adjustment
values are set to the setup value of step 5).
9) Repeat the above steps 2) to 8) until all adjustment
values are set to the setup values of steps 3) and 5).
5. Set [Cal Mode] to [Off].
n
The above described adjustment items 2, 3 and 4 must be
performed while the picture quality mode User1 is in the
standard condition.
2-5. Sub Color and Sub Hue
Adjustments
1. Connect the NTSC SMPTE color bar signal to Video
Input.
(1) (2)
(A) (B)
SMPTE color bars
2. Set the picture quality setting User1 in the standard
condition as follows.
Select [Picture Mode] → [User1]. Then set [Reset] of
[Adjust Picture] to [OK].
3. Enter the Service Mode and then select the Blue Only
mode as follows.
Select [Service Mode] → [General] → [Blue Only],
and set [1].
PFM-32C1/32C1E
(3) (4)
(C) (D)
4. While observing the screen display, adjust the NTSC
Sub Color and Sub Hue as follows.
Select [Service Mode] → [Chroma Decoder] → [Sub
Color], and set [Col (NTSC)] to [6].
Adjust [C Out Level] of [Chroma Decoder] until (1)
has the same brightness as (A), and (4) has the same
brightness as (D).
Select [Hue] of [Chroma Decoder] and adjust [Hue
(NTSC)] until (2) has the same brightness as (B), and
(3) has the same brightness as (C).
Repeat the above described adjustments until all the
adjustment values are satisfied at the same time.
(Tracking)
5. Connect the PAL SMPTE color signal to Video Input.
6. While observing the screen display, adjust the PAL
Sub Color as follows.
Select [Service Mode] → [Chroma Decoder] → [Sub
Color].
Adjust [Col (PAL)] of [Chroma Decoder] until (1) has
the same brightness as (A), and (4) has the same
brightness as (D).
7. Connect the SECAM SMPTE color signal to Video
Input.
8. While observing the screen display, adjust the SECAM
Sub Color as follows.
Select [Service Mode] → [Chroma Decoder] → [Sub
Color].
Adjust [Col (SECAM)] of [Chroma Decoder] until (1)
has the same brightness as (A), and (4) has the same
brightness as (D).

2-6. Video Decoder Adjustment

1. Connect the SECAM all gray 30 IRE signal to Video
Input.
2. Set [Cal Mode] of [AD Converter] of the Service
Mode menu to [On].
3. Adjust [By Adj (SECAM)] of [Chroma Decoder] of
the Service Mode menu until the Blue detection value
has the same value as the Green value.
4. Adjust [Ry Adj (SECAM)] of [Chroma Decoder] of
the Service Mode menu until the Red detection value
has the same value as the Green value.
5. Repeat steps 3 and 4 until the detection values of R, G
and B are within the range (± 5 %) of tolerance error.
6. Set [Cal Mode] of [AD Converter] of the Service
Mode menu to [Off].
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