Test Mode; Base Unit - Sony SPP-A2770 Service Manual

SPP-A2770

BASE UNIT

Note:
The test mode in this set includes the test items that use normal set
only, and the test items that need the panel (BASE CABINET (UP-
PER) ASSY) to be replaced with that for the SPP-A2780.
Items that use normal set only (Test case 1)
• TSET A
• TSET C
• TSET F
• Erase
Items that use the panel for SPP-A2780 (Test case 2)
• TSET D
• TSET E
– TEST CASE 1 –
(Items that use normal set only)
[ENTERING THE TEST MODE]
1. Turn the power on.
[GREETING REC]
2. Press three keys of
[ERASE]
and simultaneously.
3. When the test mode becomes active, the message counter dis-
plays "–0" along with an acknowledged tone. (Idling status of

test mode)

4. Pressing either key in the following table causes the mode as-
sociated with the pressed key to be activated.
Key Mode
[MEMO REC]
TEST A
[GREETING REC]
TEST C
[GREETING PLAY]
TEST F
[ERASE]
Erase
5. To return the idling status, press the
[RELEASING THE TEST MODE]
Disconnect the power.
[DETAIL OF EACH MODE]
1. TEST MODE A (Manufacturing mode)
In the test mode idling status, press the
tive this mode and display "–A".
Key Test
1. In the "–A" status, press the
key test.
2. Press the key following order.
[ANSWER ON/OFF] [REPEAT
t
STOP] [SKIP ]
t >
[MEMO REC] [ERASE]
t
[GREETING PLAY] [DAY/TIME]
t
TOR]
3. When this test finished, a completion tone is generated and
the base unit returns to the initial test mode "–A" and waits for
a command.
Also, pressing the keys in wrong order causes the set to be
returned to the initial status.
12
SECTION 4
TEST MODE
[HANDSET LOCATOR]
,
Items
Manufacturing mode
Electrical adjustment mode
DSP control mode
Initialize the EEPROM
[VOL --]
key.
[MEMO REC]
key to ac-
[MEMO REC]
key to active the
] [MESSAGE PLAY/
t
.
[VOL +] [VOL --]
t t
[GREETING REC]
t
[HANDSET LOCA-
t
2. TEST MODE C (TX Power Measurement Mode)
In the test mode idling status, press the
active this mode and display "–C".
1. In the "–C" status, press the
TX power measurement mode and transmit the single carrier
continuously.
2. In this status, setting can be changed by entering the following
keys (not displayed).
[REPEAT ]
.
[SKIP ]
>
[GREETING PLAY]
[DAY/TIME]
[ANSWER ON/OFF]
3. TEST MODE F (DSP Control Mode)
In the test mode idling status, press the
to active this mode and display "–F".
3-1. ICM Recording Path Mode
In the "–F" status, press the
recording path mode. In this mode, it operates as follows.
,
• ICM recording path setting
• DTMF monitor
When receive DTMF, it displays corresponded number to the
received DTMF
• CPT detection
When detect busy tone (400 Hz) or stutter tone, it lights up the
[IN USE]
LCD.
3-2. Line Playback Path Mode
In the "–F" status, press the
playback path mode. In this mode, it operates as follows.
• Line playback path setting
3-3. Recording Test
Note: Execute this test after setting the path in "3-1. ICM Recording Path
Mode".
In the "–F" status, press the
cording test. In this mode, it operates as follows.
• VOX detection
When detect receiving signal from the line, it lights up the
[ANSWER ON/OFF]
Note: When receiving signal is single tone, attenuator becomes active.
Therefore use the input signal is voice signal or burst signal of sine
wave (1.2 kHz).
3-4. Playback Test
Note: Execute this test after setting the path in "3-1. ICM Recording Path
Mode".
In the "–F" status, press the
active the playback test. In this mode, it operates as follows.
• Playback test
Playback the recorded signal by "3-3. Recording Test".
t
t
3-5. Speaker Path Test 1
In the "– F" status, press the
speaker path test 1. In this mode, it activates phone line path when
IC402 pin 0 (MIC GAIN CONT) is "L" and IC402 pin uj (H/S
TALK GAIN CONT) is "H".
3-6. Speaker Path Test 2
In the "–F" status, press the
speaker path test 2. In this mode, it activates phone line path when
IC402 pin 0 (MIC GAIN CONT) is "H" and IC402 pin uj (H/S
TALK GAIN CONT) is "L".
In this mode, it operates as follows.
• When the
[VOL +]
• When the
[ANSWER ON/OFF]
DP "0".
[GREETING REC]
[REPEAT ]
. key to active the
: Select main antenna
: Select sub antenna
: Select channel 5
: Select channel 28
: Select channel 50
[GREETING PLAY]
[REPEAT ]
.
key to active the ICM
[SKIP ]
> key to active the line
[MEMO REC]
key to active the re-
LED.
[MESSAGE PLAY/STOP]
[GREETING REC]
key to active the
[GREETING PLAY]
key to active the
key is pressed, it outputs the DTMF "5".
key is pressed, it outputs the
key to
key
key to