Daewoo DV-K884N-SJ, Руководство по обслуживанию

Страница: 47 / 128

46
4) The name and function of Pins of Switching IC (LA7152); Hi-Fi Only
5) The name and function of Pin on MPX module (Hi-Fi Only)
Pin No. Name Function
1 INPUT 1 N.C
2 CONTROL 1 GND
3 INPUT 2 Tuner INPUT PIN
4 CONTROL 2 TUNER/LINE SELECT, TUNER 'H'
5 GND GND
6 INPUT 3 LINE INPUT PIN
7 MUTE N.C
8 OUTPUT VIDEO OUTPUT PIN
9 Vcc Vcc 5V
Pin No. Name Function
1 Vcc Connects to +9V
2 L+R OUT L+R output pin with de-emphasis characteristics
3 L OUT Left side line out pin
4 R OUT Right side line out pin
5 MUTE Suppress the output of Pins 2, 3 and 4.
Operates at H level (2.0 to Vcc)
6 F SAP Mode control switch, connects to GND
At L (GND), SAP discrimination automatic selection mode
7 FORCED Selection of monural and stereo operations
8 MS 0 Mode control switch
9 MS 1 Mode control switch
10 SAP IND When a SAP broadcast signal is detected, the SAP indicator is driven.
The maximum drive current at open collector output is 25mA.
11 ST IND When a stereo braodcast signal is detected, the stereo indicator is driven. The maximum
drive current at open collector output is 25mA.
12 MPX IN Composite signal is applied to this pin. Standard input signal level at monaural mode
(400Hz) is 0.7Vp-p (247mV rms, –9.9dBm).
13 GND Connects to GND
M0 M1 L OUT R OUT
H L L+R L+R
L H L R