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See also:
Service Manual
Models:
DMR57LFB/XAA
DMR57LFS/XAA
DMR57LFW/XAA
DMR77LHB/XAA
DMR77LHS/XAA
DMR77LHW/XAA
DMR78AHB/XAA
DMR78AHS/XAA
DMR78AHW/XAA
•
Units with a fuse, if it blows there is very low A/C voltage at PCB L1 to N, L1 to Ground will read 120vac.
•
Replace fuse and unit may work properly, usually a "weak fuse".
•
Neutral is fused, use caution as L1 is hot, you will be "shocked" between L1 and Chassis.
•
Later production the fuse is "hidden" in the wire harness.
•
Newer production (May 2009 Serial *S5*) has no fuse. Dead unit, look for cause,
.
if none, replace main PCB (new part #)
Dishwasher Cycle Chart — Condensation Dry System
Program
Drain
0:45
Normal
Heavy
0:45
0:45
Delicate
0:45
Rinse
Quick
0:45
0:45
Smart Auto
Program
Normal
-
Heavy
-
-
Delicate
Rinse
-
-
Quick
-
Smart Auto
IMPORTANT SAFETY NOTICE – "For Technicians Only" This service data sheet is
intended for use by persons having electrical, electronic, and mechanical experience
and knowledge at a level generally considered acceptable in the appliance repair trade.
Any attempt to repair a major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible, nor assume any liability for
injury or damage of any kind arising from the use of this data sheet.
Which Detergent Ingredients Give Best Dishwasher Performance
Detergent with a separate rinse additive in the dispenser gives better drying performance.
For tough baked on soils an Enzyme detergent is better at hydration of the food soils.
For staining such as tomato, coffee and tea, a detergent with a higher phosphate content
and Chlorine bleach will work on the stains much better than an Enzyme based detergent.
Dead Dishwasher — Possible Bad Fuse
Pre-wash
Pre-wash
Pre-wash
1
2
16:30
(16:30)
17:30
17:30
16:30
-
-
-
5:30
-
5:30
(17:30)
(17:30)
~17:30
Pre-wash 1,2,3
-
-
-
-
-
-
-
-
-
-
-
-
Fast Track Troubleshooting
Publication # tsDMR57 Creation Date 01/21/2010
Main
Rinse 1
3
wash
-
32:30:00
7:30
17:30
46:30:00
7:30
-
37:30:00
7:30
-
-
9:30
-
11:30
7:30
11:30
7:30
~46:30
Main
wash
120?F
-
(49?C)
149?F
-
(65?C)
113?F
-
(45?C)
-
-
113 ?F
-
(45?C)
113~149?
-
F
(45~65?C)
Rinse 2
Rinse 3
(7:30)
32:30:00
7:30
46:30:00
-
32:30:00
-
-
-
12:30
12:30
(7:30)
~46:30
Rinse 1,2
No
Sanitize
140?F
-
-
(60?C)
158?F
-
-
(70?C)
140?F
-
-
(60?C)
-
-
-
140?F
-
-
(60?C)
140~158?
-
-
F
(60~70?C)
Total
Dry
Time
20
110~134
20
181
20
115
-
11
-
38
20
58~181
Rinse 3
Sanitize
162?F
(72?C)
162?F
(72?C)
162?F
(72?C)
-
162?F
(72?C)
162?F
(72?C)
1
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Summary of Contents for Samsung DMR57LFB/XAA
- Page 1 Models: and knowledge at a level generally considered acceptable in the appliance repair trade. DMR57LFB/XAA Any attempt to repair a major appliance may result in personal injury and property DMR57LFS/XAA damage.
- Page 2 Wiring Diagram after 5-1-2009 DMR57 / 77 / 78...
- Page 3 Wiring Diagram before 5-1-2009 DMR57...
- Page 4 Wiring Diagram before 5-1-2009 DMR77 / 78...
- Page 5 PCB after 5-1-2009 CN302 CN01 CN1 PBA Power 1-Power Relay Driver 1 120vac 2-Heater Relay Driver CN802 LED 5vdc Driver 3 120vac 3-Half Load Sensor CN501 Disp LED Driver DMR77-78 only 4-Trubidity Sensor 5-Trubidity Transmitter 7-6 5vdc CN502 Disp LED Driver 8-Rinse Aid Sensor DMR77-78 only 9-6 12vdc...
- Page 6 Leaking “LE” Code Moisture creates resistance between the pins. ALWAYS clean the area below the pins after troubleshooting. Check Pump Ass’y for proper twist lock. Condensation may form on the tray from uninsulated outside walls or large hole in the floor to a cold basement. Check Drain Hose for cut or small hole.
- Page 7 Drying Concerns Condensing Dry System is used to conserve energy 1. Verify proper operation of Rinse Aid Dispensing. Leaking and Poor 2. Verify Fan operation. Washability 3. Must use a Rinse Agent —Check 4. Should use Sanitize Cycle for split wash arms 5.
- Page 8 Samsung 'Dishwasher' Diagnostic Code Quick Guide Cause Reason Tests Without Pulling D/W Error Error Type Mode 1. When the pulse of 100 or less is detected Water supply valve defect, Flow Meter Check valve resistance and 1 minute after the water supply starts...
- Page 9 Service In- Press the Delay Start + “ALL” is displayed for the first three (3) seconds and then “t1” You can spection Normal + Power keys change the mode by pressing the Normal key. Each time the Normal key is Mode at the same time pressed, the mode changes in the order of...