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18, AUDIO SYSTEM ADJUSTMENT
48-1, Analog Audio System Adjustment (AF-52 Board)
1. fudio output level odjustment KDP-6400/7400)
Note: Adjusting olement of the 2/R channel is
indicated in brackets
[ } .
Mode
stil
'inh
Frame 4301 (RAMP/ Liz) (REFSP)
Signal
Frame 4301 (RAMP/Lki) [REF?)
Audio output
Heasurenent point | 7 (2/R ] terminal
Adjustaent gethed :
1) Playback the REFIP dise
2) Search the Frame
4301 (chapter 6)
3) Turn off the CK] with remote commander.
iGonfirm that the indication on the Front panel of
the main unit is disappeared.
AY Adjust with RY7OL [ RV702
| to 500+25a¥rms
oe 1.4 £0.07 pp
1-8-2. Dightal Audio System Adjustment (MP-31 Board)
ode
Stop
Audio level meter or
Measurement point
Pinot 16303
ADJUSTMENT RELATED PARTS.
LOCATION
MP-31 BOARD (CONDUCTOR SIDE}
Measuring Equipment
Osei lLorcape
Av2OL (R¥702 ] {YTSC)
AdJuating Element
| gv793 [RV704 | (PAL)
Veasuring Equipment | Digital Voltaeter
'Adjusting Eleaont | RVEOI
Audio level meter:
500% 25a¥rms
Swecified Valve | Qsiltoncome : 1.40,07Vb-p
Adjustaent eethod
1) Playback the REF? disc,
2) Search the Frame
4301 ichapter 6)
8) Tuen off the [GX] with remota commander,
(Confirm that the indication on the front panel of
the main unit is disappeared.
4) Adjuat with RV701 [ R¥702) to 600+ 25avres or
1.4260. 0%¥p-p.
3) Playbock the REFSP disc.
6) Search the Frame
4301 (chapter 6)
1) Turn off the [EX] vith reaote commander.
(Contin that the indication on the front panal of
the main unit is disappeared.)
8) Adjust, with RV703 (EFT ) to 500+ 25aVems or
14£0.07¥9-p.
2. Audio output Level adjustwtent: (NOP-440)
Note: Adjusting element of the 2/R channel ix
indicated in brackets ( ) .
Specified
00. 2¥de
Connections:
Connect the chemical capacitor (1uF or more)
in between Pinot [C803 (EFW) and GYD.
Adjustsent
sethod
;
Uy Adjust with RV8O1 so that the voltage at Pin(of
10803 is 00. 2¥de.
6-9. RF PLL Free-Run Adjustment {MP-31 Board)
—
Node
] stop
Measurement point j Pin GB ot e803
Measuring Equipment
Frequency counter
Adjusting Element
Lvsor
Wode
Playback
Signal
Frame 4301 (RAHP/Lidtz) (REFSP)
sudig output
Weawuraent point | {Yt faye) terminal
Audio level meter or
Measuring Equipment | 9.0; 1toscope
Adjusting Elewent | Rv70. (R702 1
Audio level meter
$00 25n¥re
Specified Yalue | psitloscupe : 1.440. 07¥p-p
Specified Value | 4.405:0. 005462
SSS
Connection
Connect the chemical capacitor(1F or more)
in between Pin) |EFM) of 1C803 and GND.
Adjustaant method =
1) Adjust with L¥891 to 4.405 0. 005%
Fig. 7-38.
Mote: Tf adjusting with a metallic scvesdriver. =
reading value my be altered. So use 2 ceramic
sererdriver
—141—
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reegieNr|
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(PAW
(NTSC)
—142~
AF62 BOARD
Mo
adjustment
cable
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