DOWNLOAD LG GR-S392QVC Service Manual ↓ Size: 2.05 MB | Pages: 59 in PDF or view online for FREE

Model
GR-S392QVC
Pages
59
Size
2.05 MB
Type
PDF
Document
Service Manual
Brand
Device
Refrigerator
File
gr-s392qvc.zip
Date

LG GR-S392QVC Service Manual ▷ View online

2. PARTS IDENTIFICATION
- 5 -
NOTE : This is a basic model. The shape of refrigerator is subject to change.
Egg Storage Rack
Freezer Door Rack
Refrigerator Door
Rack
Leveling Screw
FREEZER
COMPARTMENT
Freezer Temperature
Control Dial
Twisting Ice Serve(Option)
or                    
General Type Ice Making
 Freezer Shelf
REFRIGERATOR
COMPARTMENT
Deodorizer
(Option)
Chilled Compartment
Lamp 
F.I.R Lamp (Option)
(Plastic or Steel
 or Tempered Glass)
Shelves
Multi Flow Duct
Distributes cold air to
 each part of refrigerator
 compartment.
Vegetable Drawer
Used to keep fruits
and vegetables, etc.
fresh and crisp.
Bottle Guide
Vegetable Partitioner
(Option)
Lamp
Wine Rack
(Option
if steel shelf)
You can use
this as
Vodka rack
in the Freezer.
Refrigerator Temperature
Electronic Control
7-2 PCB FUNCTION
7-2-1 POWER CIRCUIT
The secondary part of the TRANS is composed of the power supply for the display and relay drive (12Vdc) and that for the
MICOM and IC (5Vdc).
The voltage for each part is as follows.
VA1 is a part for preventing the over voltage and noise. When 385V or higher power is applied, the inside elements are
short-circuited and broken, resulting in the blowout of the fuse in order to protect the elements of the secondary part of the
TRANS.
- 19 -
PART
VA 1
CE 2
CE3
VOLTAGE
220 Vac
12 Vdc
5 Vdc
7-2-2 OSCILLATION CIRCUIT
This circuit is to generate the base clock for calculating time and the synchro clock for transmitting data from and to the
inside logic elements of the IC1(MICOM).  Be sure to use the authentic parts since the calculating time by the IC1 may be
changed or it will not work if the OSC1 SPEC is changed.
7-2-3 RESET CIRCUIT
The RESET circuit is for allowing all the functions to start at the initial conditions by initializing various parts including the
RAM inside the MICOM (IC1) when the power is initially supplied or the power supply to the MICOM is restored after a
momentary power failure.  For the initial 10ms of power supply, ‘LOW’ voltage is applied to the MICOM RESET terminal.
During a normal operation, 5V is applied to the RESET terminal. (If a trouble occurs in the RESET IC, the MICOM will not
work.)
- 20 -
7-2-4 LOAD DRIVE CIRCUIT
1. Load Drive Condition Check
- 21 -
Load Type
Defrosting Heater
Refrigerator Fan
Measurement Location(IC5)
No.13
No.10
No.12
ON
1V or below
Condition
OFF
12V
Comp,
Freezer Fan Motor
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