Sony TA-E88 - Adjustments and Calibration; Offset Adjustments

| TA-E88/E88B
TA-E88 /E88B
SECTION 3
ADJUSTMENTS
OFFSET ADJUSTMENT—1 (PHONO EQ AMP) OFFSET ADJUSTMENT-—2 (OUTPUT AMP)
Setting: Setting:
POWER switch (S6) : ON POWER switch (S6) : ON
FUNCTION switch (S1) : PHONO 1 ATTENUATOR control : fully counter-
FUNCTION switch (S2) : PHONO clock wise
OUTPUT LEVEL switch (S5) : OdB
Procedure:
Procedure:
oscilloscope
(dc range, vertical amplifier
sensitivity, 1mV Adiv or less)
1. Terminate the PHONO 1 jack with a shorting plug.
2. Adjust RT201 (L-CH) and RT251 (R-CH) for
OV reading on VOM.
Specification:
EQ OUT level: 0 0.1V
OUTPUT 1
Adjustment Location: OVde
— main board — ;
i
1.
Adjust
RT401
(L-CH)
and
RT451
(R-CH)
for
OV reading on oscilloscope.
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OUTPUT
1
level:
0
+0.1mV
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Adjustment
Location:
Royse
Se
See
—
main
board
—
QUTPUT 1 (R-CH]) RT451 (R-CH)
RT257 RT201
(R-CH) (L-CH)
__.. PHONO 7
jack
(R-CH])
RT401 (L-CH)
OUTPUT 1 (L-CH}
45=
OFFSET ADJUSTMENT-—3 (BUFFER AMP)
Setting:
POWER switch (S6) : ON
FUNCTION switch (S1) : TUNER
MONITOR switch (S3) : SOURCE
MODE switch (S4) : STEREO
BALANCE control : mechanical mid
ATTENUATOR control : fully clockwise
OUTPUT LEVEL switch (S5) : OdB
oscilloscope
Procedure:
| {de range, vertical amplifier
sensitivity; ImV /div or less}
OUTPUT 7
1. Terminate the TUNER jack with a shorting plug.
2. Adjust. RT301 (L-CH) and RT351 (R-CH) for
OV reading on oscilloscope.
Specification:
OUTPUT 1 level: 0 +0.1mV
Adjustment Location:
— main board —
OUTPUT
1{R-CH)
RT351
(R-CH)
© TUNER jack
| {R-CH}
@)— TUNER jack
S (L-CH)
Cs Bae |
\
|
OUTPUT
Tf
(L-CH}
RT307
(L-CH)
MUTING TIME CHECKING
Confirm the operation of the relays (RY301, 351)
® RY301 and RY351 are energized at about eight
1 seconds after the POWER switch is turned ON.
® RY301 and RY351 are released at the moment
when the POWER switch is turned OFF.
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