Handset Section - Sony SPP-111 Service Manual

HANDSET SECTION

MANUAL TEST MODE
Set the Test Mode:
1. Enter the test mode by pressing 0 key while pressing 1 and
TALK keys when in idle condition.
(Key operation 0 n 1 n TALK )
2. The RINGER will ring for 500 msec. when the test mode is
started.
3. Measurement mode of consumption current. (42# state)
4. Use key input to carry out the various settings.
5. Use port inputs to set output from LED terminals.
Release the Test Mode:
1. Press the 0 , 0 and # keys.
2. Turn off the power. (Remove the battery and replace them.)
– hand main board (side B) –
MACHINE TEST MODE
Set the Test Mode:
1. When power on reset is applied while a "H" (high) is input the
2. Following that, at timing in which the TEST SW terminal has
3. Set the TX setting to TX OFF.
4. The channel is set by voice not by data.
5. Use port inputs to set output from LED terminals.
Release the Test Mode:
1. Press the OFF key.
2. Remove the short plug and turn on the power.
TP36
TP35
TP55
IC101
– 9 –
TEST SW (TP43) terminal (IC501 $º pin), the RING (Level
H, 500 msec) sounds.
"H" (high) input, there is output of "L" (low) by the CH
(channel) setting control terminal. Then there is PLL setting to
the CH which was read to with the CH setting terminal
according to that "L" (low) output.
TP14
TP43
TP44 TP16
TP33
IC501
TP13
TP15
TP17