Sony Walkman MZ-N910 Service Manual page 21

• Adjustment method of VREC_Middle
(item number: 752)
Remote commander LCD display
752
VREC M **
** : Adjusted value
1. Connect a digital voltmeter to the TP602 (V_REC) on the MAIN
[VOL +]
board, and adjust
(voltage down) so that the voltage becomes 1.22
MAIN board
TP602 (V_REC)
TP952 (BATT–)
2. Press the key or the
X
to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment method of VREC_High
(item number: 753)
Remote commander LCD display
753
VREC H **
** : Adjusted value
1. Connect a digital voltmeter to the TP602 (V_REC) on the MAIN
[VOL +]
board, and adjust
(voltage down) so that the voltage becomes 1.52
MAIN board
TP602 (V_REC)
TP952 (BATT–)
2. Press the key or the
X
to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment method of ChgV L
(item number: 755)
Remote commander LCD display
755
ChgV L **
** : Adjusted value
Note : Remove the rechargeable battery.
1. Connect a digital voltmeter to the TP951 (BATT +) on the MAIN
[VOL +]
board, and adjust
(voltage down) so that the voltage becomes 1.35 ± 0.010 V.
MAIN board
TP951 (BATT+)
TP952 (BATT–)
2. Press the key or the
X
to write the adjusted value.
Adjustment and Connection Location: MAIN board
[VOL --]
key (voltage up) or
+ 0.025
V.
– 0.010
digital
voltmeter
key on the remote commander
(see page 23)
[VOL --]
key (voltage up) or
+ 0.060
V.
– 0.010
digital
voltmeter
key on the remote commander
(see page 23)
[VOL --]
key (voltage up) or
digital
voltmeter
key on the remote commander
(see page 23)
• Adjustment method of ChgV H
(item number: 756)
Remote commander LCD display
756
ChgV H **
** : Adjusted value
Note : Remove the rechargeable battery.
key
1. Connect a digital voltmeter to the TP951 (BATT +) on the MAIN
board, and adjust
(voltage down) so that the voltage becomes 1.80 ± 0.010 V.
MAIN board
TP951 (BATT+)
TP952 (BATT–)
2. Press the X key or the
to write the adjusted value.
Adjustment and Connection Location: MAIN board
• Adjustment Method of CIL (Charge current)
(item number: 757)
Note: Remove the rechargeable battery.
1. Make a solder bridge to short SL951 on the MAIN board (in
key
order to connect R967 (47Ω) between TP951 (BATT +) and
TP952 (BATT –))
2. Turn on the power.
3. Set the manual mode of the test mode and set the item number
757 (see page 13).
Remote commander LCD display
757
CIL **
** : Adjusted value
4. Connect a digital voltmeter to the TP961 and TP952 (BATT –)
on the MAIN board, and adjust the
[VOL --]
or key (voltage down) so that the voltage becomes
1.41 ± 0.010V.
SL951
R967 (47 Ω )
TP952 (BATT-)
5. Press the key on the set or the
X
commander to write the adjusted value.
key
6. Turn off the power and open the solder bridge on SL951 on
the MAIN board.
Adjustment and Connection Location: MAIN board
[VOL +]
key (voltage up) or
digital
voltmeter
key on the remote commander
(see page 23)
[VOL +]
key (voltage up)
digital
MAIN board
voltmeter
TP961
key on the remote
(see page 23)
MZ-N910
[VOL --]
key
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