Pioneer CT-501 Service Manual page 25

_ CT-501,450,405
@ Set the DOLBY NR switch to the OFF position.
1. Head Azimuth Adjustment
@ Turn V101 and V201 to maximum position (fully clockwise).
Mode Input signal & test tape Adjustment location | Measuring location | Adjustment value [ Remarks
STOP Set the TAPE SELECTOR switch to the NORM position.
2 Play the 10kHz/~20dB section Head azimuth adjust- | Left and right OUT-} Maximum playback
of the STD-331B test tape. ment screw. PUT terminals. signal level,
(See Fig. 11-6)
3 STOP Lock the screw with screw lock after completing the adjustment.
2. Playback Equalizer Check
Mode Input signal & test tape Adjustment location Adjustment value
STOP Set the TAPE SELECTOR switch to the NORM position.
Play the 315Hz/~20cB and Confirm Left and right OUT-| The 6.3kHz play-
PUT terminals. back level is -0.5+
6.3kHz/-20dB section of
the STD-331B test tape. 2dB against 315Hz
level,
3 STOP Set the TAPE SELECTOR switch to the CrO, or METAL position.
Play the 315Hz/-20dB and Confirm Left and right OUT-| The 6.3kHz play-
6.3kHz/~20dB section of the PUT terminals. back level is -4,5+2
STD-331B test tape. dB against 315Hz
level,
ul [Mm be
J202 5102
b o J101
L@ Qe a fy 201
aa
ti
i
V103
v203
REC LEVEL
PB. LEVEL
Vv
V102 So ate
L R
BIAS
COO a] of]
(| cd
Dor
< AD S
Ny
®
| a
Y
Z| P=
sh
Fig. 11-8 Adjustments locations
28