Sony PS-X7 - 3-2. ELECTRICAL ADJUSTMENTS

3-2. ELECTRICAL ADJUSTMENTS
B+ (14V) Adjustment
| PS-X6/X7__ PS-X6/X7
Note: Wait a few seconds for warm-up after the
power switch is turned on.
Speed Detecting Head Output Level Adjustment
Automatic Return Adjustment
1. Move the tonearm into the turntable center by When playing the band 2 of the test record,
: . make sure that the tonearm returns f
Adjust RV101 for 14V reading on VOM. Before this adjustment, set the speed detecting ltand.so: thet the shutter keeps apart Om he meaner ye
CdS and lamp holder. count 14 to 18 of the test record.
head on the head holder as shown below. iF nese deallsaak the. adiustiient
power
supply
/PLL
©
2.
With
the
play
switch
(S3)
pushed,
adjust
SO
eee
BUMS
NEM
Screw.
mimes Boer Ce RV401 for 1.6V £0.2V reading on VOM. 5. When playing the band 3 of the test record,
7
speed detecting 3. Set the position of the stylus as. shown below see a ae cao felems:trom’ the
: head and turn the adjustment screw for 5.1V.+0.1V oe pies Nee aan F Loe
nd re
reading on VOM with the play switch (S3) PSs AES SE TERRA ROONS
: steps 4 and 5.
pushed.
* head holder brake drum
turntable.
1. Adjust the position of the head holder so that stylus j
the VTVM reading is more than 30mV ac at !
331/3 rpm.
2. Make sure that the head does not touch the
turntable and tighten the screws securely.
RV101
servo amp/system
control circuit board
56.5 mm
(range:
ac)
(27/32")
control panel side
— servo amp/system control board —
more than
30mV ac
(33/3 rpm)
adjustment screw
; Adjustment Location:
VOM
(range: dc)
Adjustment Location:
head holder
TA, ele Se
Note: The clearance between the magnet
coated rim and the speed detecting head
is more than 0.3 mm.
SONY-00830 / DRUCK 3