Daewoo DSP-4210GM, Руководство по обслуживанию

Страница: 24 / 36

- 23 -
Service manual SP-110
NAME DIODE MEASURE DIODE MEASURE
TESTER TESTER
1 170V + About 3 Sec. Later, - Beyond 0.8
GND - Open +
2 -155V + Beyond 0.7 - Open
GND - +
3 ON/OFF + Open - Beyond 2.4
GND - +
4 15V + Beyon 0.7 - About 5 Sec. Later, beyond 0.4
GND - +
6-3. Y-SUSTAIN BOARD
1. Separate PA9, PA111 connector
2. Confirm the remaining electrical Voltage of PA9
(1) Confirm the Voltage of Terminal 170V : If maintained beyond 10 volt, discharge(below 5 volt)
with resistance of beyond 1K ohm 5 Watt
(2) Confirm the Voltage of Terminal -155V : If maintained beyond -10 volt, discharge(below -5
volt) with resistance of beyond 1K ohm 5Watt
3. Confirm the resistance of RY2 ( 470 ohm 5Watt )
(1) In case of wrong value, replace board and confirm each connector
4. In case of normal value of resistance, measure the value as following Table 1.
(1) Use a Diode Tester
(2) If abnormal part is found, replace the board
(3) In case of normal state, Inspect connectors and other boards
Table 1. PA9 The value of Diode Tester of each terminal
* + : red, - : black
Table 2. PA111 The value of Diode Tester of each terminal
* + : red, -: black
The configuration of terminal (top view, components side)