Sony MZ-R55, Service Manual

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• Clock Operation Check
1. For the mode No. of 221, operation check is performed.
It is determined as OK if at 11 years, 11 months, 11 days, 11
hours, 11 minutes and 11 seconds or not the default value.
2. For the mode No. of 221, pressing
P
key will clear the resume
data stored in EEPROM and initialize the clock data.
Note) The clock should be set when the overall adjustment mode
is completed as OK. The write data is to be at 11 years,
November 11 days, 11 hours, 11 minutes and 11 seconds.
(4) Power Mode
Mode No. Test Description Indication value Remark
300 POWER test
310 POWER SUPPLY
311 DC IN +B voltage value
312 DC IN + Ni-Cd +B voltage value
313 Ni or AM3 +B voltage value
314 AM3 +B voltage value
320 CHG TEST
321 Charging start
1. Go into the test mode.
2. Press
+
key or VOLUME + and VOLUME + and VOL-
UME + and VOLUME + in this turn to set the power mode.
POWER
XX XX
Adjustment value
Mode No.
(Lower two digits are displayed.)
3. Press the keys below to change the mode No.
(
: Increases the one place.
p : Sets the one place to 0.
This key brings the ten place to 0 if the one place is
0.
VOLUME + : Increases the ten place by 10 if the one place is 0.
Increases the adjustment value if the one place
is non-zero.
VOLUME – : Decreases the ten place by 10 if the one place is 0.
Decreases the adjustment value if the one place is
non-zero.
Note)
With the mode number 310 selected, pressing
(
key will
transfer to the mode number (311 to 314) for the currently
operating power.
With the mode number 300 selected, pressing
P
key will
set the sleep mode. Pressing
p
key will release it.
• How to Check in the Power Mode
1. For the mode numbers of 311 to 314, the voltage of the currently
operating power is displayed.
4-5. OVERALL ADJUSTMENT MODE (ASSY MODE)
• How to Adjust in Assy Mode
1. Go into the test mode.
2. Press
=
or VOLUME – key.
Assy Mode
XX
40
3. Insert the test CD (TDYS-1) or an available SONY CD.
4. Press
(
key. The system discriminates between CD and MO
and performs automatic adjustment for CD.
CD RUN
51
Mode No. under adjustment
• CD Automatic Adjustment
Mode No. Adjustment Description
052 CD FE balance adjustment
053 CD ABCD level adjustment
055 CD focus gain
056 CD tracking gain
057 CD focus bias
CDmode OK
00
5. If the result of automatic adjustment is OK, the following dis-
play appears:
6. If the result of automatic adjustment is NG, the following dis-
play appears:
CDmode NG
55 7F
Result of adjustment
NG mode No. (lower two digits)