Checking The Button Functions

Before replacing the electronic control board, check for proper button function as follows:

Unplug dryer or disconnect power.

Disconnect the ribbon cables at P3 and P4 on the electronic control board. The illustration below shows the connector locations.

Using an ohmmeter, touch the meter test leads to the ribbon cable connector pin locations in- dicated in the table. Press the associated but- ton and measure resistance.

NOTE: The meter must be connected with the proper polarity. For most analog meters, the connection polarity is opposite that of digital meters.

If using a digital meter, the resistance

reading should go from infinity down to approximately 1 to 3.5 MΩ (megohms). If available, you can use the “diode test” function on the digital meter.

If using an analog meter, the resis-

tance reading should go from infinity (open circuit) to less than 40 kΩ. If not, reverse the polarity of the meter con-

nection, and measure the resistance again. If the reading is less than 40 kΩ, the circuit is okay, and you should con- tinue the remainder of the resistance checks with the connections reversed from that indicated in the table.

Button

Digital

Meter

Analog

Meter

+ Lead

– Lead

– Lead

+ Lead

 

 

 

 

 

TEMP

P3-12

P3-8

P3-12

P3-8

EXTRA CARE

P3-13

P3-8

P3-13

P3-8

 

 

 

 

 

DRYNESS

P3-14

P3-7

P3-14

P3-7

LEVEL

 

 

 

 

+

P3-13

P3-7

P3-13

P3-7

P3-12

P3-7

P3-12

P3-7

 

 

 

 

 

CYCLE END

P3-12

P4-2

P3-12

P4-2

SIGNAL

 

 

 

 

HOLD TO

P3-14

P4-2

P3-14

P4-2

START

 

 

 

 

OFF/Pause

P3-13

P4-2

P3-13

P4-2

CONTROL ON

P3-12

P3-9

P3-12

P3-9

 

 

 

 

 

White Blue

Light Blue

Motor Relay

Heater Relay

Black

Lt. Blue Black

 

Red/White

Green/Yellow

Black

 

 

N.O.

Open

Yellow/Red

COM

Rev X

 

XXXXXXX

Code YDDD

P/N

Date

6-12

Page 69
Image 69
Whirlpool MED / GD 9700S, MED / GD 9600S manual Checking The Button Functions, If using a digital meter, the resistance