Test Mode - Sony ZS-YN7 Service Manual

CD TEST MODE
Procedure:
1. Press the [POWER] button to turn the power on.
2. Select the CD test mode by momentarily shorting both of TAP
(TEST A).
Refer to CD section of ELECTRICAL ADJUSTMENT (see
page 14) for details of operation in this mode.
LCD TEST MODE
Procedure:
1. Press the [POWER] button to turn the power on.
2. Set the LCD test mode by momentarily shorting both of TAP
(TEST B) on the MAIN board and the version of micro-
computer is displayed.
3. Then all segments on and all segments off are repeated for 10
seconds alternately.
4. To release the LCD test mode, press the [POWER] button to
turn the power off.
Connecting Location:
– MAIN Board (Conductor Side) –
CN804
IC301
SECTION 4

TEST MODE

CN803
CN904
TAP
(TEST B)
TAP
(TEST A)
CN805
ZS-YN7
11