LG SPM2 Service Manual

3-15
Copyright © 2022 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
2. REMOTE CONTROL
Fig 2-2. Remote Control
High Timing
Fig 2-1. Remote Control
Input Voltage
4
Fig 2-3. Remote Control
Low Timing
6
5
Item Measured Spec.
Input Level 3.3 V
IR Receiver Spec:
2.7 ~ 5.5 V
“ Low” Timing 4.56 ms 4.0 ms ~ 7.0 ms
“ High” Timing 4.45 ms 3.9 ms ~ 5.5 ms
4
5
IR
321
VS GND OUT
RC651
C651
10V/0.1uF
R651
100
C652
6.3V/47uF
R653
10K
R652
100
C653
50V/100pF
1 23
CN651
RC_GND
6
TO IR SENSOR
3 21
BN101
C250
10V/0.1uF
C251
50V/0.01uF
R314
0
L123
600ohm/0.5A
DGND
REMOCON
VDD33A

LG SPM2 Specifications

General

Brand	LG
Model	SPM2
Category	Speaker System
Language	English