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SPP-N1026
Service manual
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Service manual
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Sony SPP-N1025, SPP-N1026 Service manual

SPP-N1025/N1026
SERVICE MANUAL
Ver 1.0 2001.07
Photo: SPP-N1025
SPECIFICATIONS
General
Operating frequency
Base phone: 902-905 MHz (310µW) Hand set: 925-928 MHz (400µW)
Operating channel
10 channels
Dial signal
Tone, 10 PPS (pulse) selectable
Supplied accessories
AC power adaptor AC-T122 Telephone line cord Rechargeable battery pack BP-T18 Wall bracket
Directory
Canadian Model
Base phone
Power source
DC 9V from AC power adaptor AC-T122
Battery charging time
Approx. 12 hours
Dimensions
Approx. 7 antenna excluded
(approx. 175 x 57 x 190 mm) Antenna: Approx. 6
(approx. 153 mm)
Mass
Approx. 13.5 oz (approx. 382 g), wall bracket excluded
x 2 1⁄4 x 7 1⁄2 inches (w/h/d),
1
⁄ 8 inches
US Model
SPP-N1025
SPP-N1026
Handset
Power source
Rechargeable battery pack BP-T18
Battery life
Standby: Approx. 7 days Talk: Approx. 7 hours
Dimensions
Approx. 2 antenna excluded (approx. 55 x 47 x 183 mm)
Antenna: Approx. 1 (approx. 34 mm)
Mass
Approx. 7.7 oz (approx. 220 g), battery included
9-873-224-01 Sony Corporation
1
⁄4 x 1 7⁄8 x 7 1⁄4 inches (w/h/d),
3
⁄8 inches
Design and specifications are subject to change without notice.
CORDLESS TELEPHONE
SPP-N1025/N1026

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 5
3-2. H/S Rear Assy ................................................................. 5
3-3. H/S FRT Assy.................................................................. 6
3-4. HAND MAIN Board....................................................... 6
3-5. Base Bottom .................................................................... 7
3-6. BASE MAIN Board ........................................................ 7
4. TEST MODE.............................................................. 8
5. DIAGRAMS
5-1. Block Diagram – BASE UNIT Section –...................... 11
5-2. Block Diagram – HANDSET Section –........................ 12
5-3. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 13
5-4. Schematic Diagram – BASE MAIN Board (1/2) –....... 14
5-5. Schematic Diagram – BASE MAIN Board (2/2) –....... 15
5-6. Printed Wiring Board – BASE MAIN Board – ............. 16
5-7. Printed Wiring Board – BASE KEY Board – ............... 17
5-8. Schematic Diagram – BASE KEY Board – .................. 17
5-9. Printed Wiring Board – HAND MAIN Board – ............ 18
5-10. Schematic Diagram – HAND MAIN Board – .............. 19
5-11. IC Pin Function Description ........................................... 20
6. EXPLODED VIEWS
6-1. Hand Set Section ............................................................. 22
6-2. Base Set Section.............................................................. 23
7. ELECTRICAL PARTS LIST ............................... 24
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUB­LISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
2
SECTION 1

SERVICING NOTES

SPP-N1025/N1026
NOTE FOR REPLACEMENT OF THE EEPROM
The ID cord is written in the EEPROM. When replacing the EEPROM, U6 on the B ASE MAIN board and U4 on HAND MAIN board should be replaced together as a pair. (Part No. X-3381-018-1)
PRIOR CHECK FOR SERVICING
This set can rewrite the ID number of handset to the ID number of base unit in the test mode even their serial numbers are different. You can find which is wrong, handset or base unit with this func­tion.
Note: A normal set is needed for this test.
Define A as the normal set and B as the faulty set. Disconnect their power.
Procedure:
1. Press the [PGM] key.
2. Select the “DIAL MODE” menu by pressing v or V keys.
3. Press the key sequence [SELECT], [2], [1], [0], [4].
4. When enter the test mode, happ y tone is emitted, and the LCD displays as shown below.
ABOUT U7 ON THE BASE MAIN BOARD
U7 (Part No. 6-800-854-01) on the BASE MAIN board which has board shape as shown below , is dif ferent from regular ICs in shape.
5. Press the key sequence [#], [2], [1], [1], [0] just after power ON.
6. When enter the test mode, the [SPEAKERPHONE] LED and
[INTERCOM] LED light up, and happy tone is emitted.
7. Disconnect the po wer of the handset B, then connect the power again.
8. Disconnect the power of the base unit A, then connect the po wer again.
9. Cradle the handset B on the base unit A to charge the battery of handset B for about 1 minute.
10. Press the [TALK] key of the handset B and join the base unit A.
11. When joining is successful, the handset B is normal. But when it fails, charge the battery of the handset B again.
12. Next, repeat the step 1 to step 9 with the handset A and base unit B
13. When joining is successful with handset A and base unit B, base unit B is normal and handset B is faulty.
3
SPP-N1025/N1026
Identifying the parts
Refer to the pages indicated in parentheses for details.
Base Phone
1 2 3 4 5 6
7 8 9
1 VOICE MAIL lamp (p. 47)
Flashes when you have messages.
2 NEW CALL lamp (p. 39)
Flashes when there is a “NEW” data in the Caller ID list.
3 Dialing keys 4 HOLD button (p. 20, 33)
Press to put a call on hold.
5 CHARGE lamp (p. 9, 19)
Lights while the battery is being charged.
6 SPEAKERPHONE button
(p. 20, 22)
Press to make or receive a call with the base phone. This button keeps lit until you are done talking.
7 LINE lamp (p. 18, 22)
Lights when the handset is in use.
8 MIC (microphone)
US
Getting Started
14
SECTION 2

GENERAL

0
qa qs
qd
qf qg
9 INTERCOM button/lamp
(p. 36)
Used to make an intercom call. The INTERCOM lamp on this button keeps lit until you are done talking.
0 VOLUME +/– buttons (p. 20, 22)
Adjusts the speaker volume.
qa SPEED DIAL button (p. 25)
Used to make a call with speed dialing.
qs PGM (Program) button (p. 25)
Used to store numbers for speed dialing.
qd REDIAL/PAUSE button (p. 21)
Redials the last number called/ inserts a pause in the dialing sequence.
qf RINGER switch (p. 32)
Used to adjust the ringer volume level of the base phone.
qg CALL WAITING/FLASH button
(p. 20)
Switches to a second call if you have “call waiting” service.
qh
qj
qh Antenna (p. 7, 49) qj Speaker (p. 20, 22) qk DC IN 9V jack (p. 7) ql LINE (telephone line) jack
(p. 7)
This section is extracted from instruction manual.
qk
ql
continued
Getting Started
Getting Started
US
15
Identifying the parts (continued)
Handset
1
2
3 4 5
6
1 Antenna 2 Speaker 3 Jog lever (p. 11, 23, 30, 31, 39) 4 HOLD button (p. 18, 34)
Press to put a call on hold.
5 TALK button (p. 18, 21, 22, 24,
33, 37)
Lets you make or receive a call.
6 Battery compartment (p. 9)
7
8
9
q;
qa
7 Display (p. 11, 38) 8 OFF button (p. 18, 22, 33, 35)
Allows you to disconnect the call.
9 Dialing keys 0 CHANNEL button (p. 18)
Press to select a better channel.
qa Microphone
qs
qd qf qg
qs FLASH button (p. 18, 46)
Switches to a second call if you have “call waiting” service, or lets you make a new call.
qd TONE button (p. 18)
Allows you to switch temporarily to tone dialing.
qf ONE-TOUCH button (p. 23)
Used to make a call with one-touch dialing.
qg INTERCOM button (p. 35)
Used to make an intercom call.
qh I (HEADSET) jack (p. 51) qj SELECT button (p. 11 – 13, 23,
27, 31, 40, 42)
Press to enter the selection and bring you to the next selection.
qh
qj
qk ql
w;
qk # button (p. 44)
Used to change the number of digits of the phone number in the Caller ID list.
ql REDIAL/PAUSE button
(p. 21, 24, 26, 28)
Redials the last number called/ inserts a pause in the dialing sequence.
w; PGM (Program) button
(p. 11 – 13, 23, 27, 31, 47)
Press to start the procedure for setting up the phone such as choosing the dialing mode.
Also used to store the setting to finish the procedure.
Getting Started
4
US
16
Getting Started
Getting Started
US
17
• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SPP-N1025/N1026
SECTION 3

DISASSEMBLY

Set
Note: Follow the disassembly procedure in the numerical order given.

H/S rear assy H/S FRT assy

Base bottom
BASE MAIN board
3-2. H/S REAR ASSY
5
Remove the H/S rear assy in the direction of arrow
B
.
HAND MAIN board
2
two screws (BTP3
×
10)
4
claw
B
3
two claws
3
two claws
A
1
Remove the battery lid in the direction of arrow
A
.
5
SPP-N1025/N1026
d
3-3. H/S FRT ASSY
3
screw (BTP2.6
1
screw (BTP2.6
×
8)
2
×
8)
4
two screws (P2
×
5)

3-4. HAND MAIN BOARD

8
receiver BKT
6

H/S FRT assy

5
screw (BTP2.6
×
8)
6
RF unit (hand)
5
4
Remove twelve solders.
9
HAND MAIN boar
2
speaker (2.8cm)
7
screw (BTP2.6 × 8)
1
Remove two solders of lead.
3
Remove solder of lead.
6
3-5. BASE BOTTOM
)
3

base bottom

2
claw
SPP-N1025/N1026
1
five screws (P3
×
12)
3-6. BASE MAIN BOARD
4
RF unit (base)
2
harness
1
Remove solder of lead.
2
claw
6
two screws (BTP2.6
3
screw (P3
8
×
8)
×
6)

BASE MAIN board

5
Remove two solders.
7
two screws (BTP2.6
×
8
9
Remove two solders of lead.
qa
BASE KEY board
0
six screws (BTP2.6
×
8)
7
SPP-N1025/N1026
SECTION 4

TEST MODE

Introduction
The manual test mode can be used for testing the RF and audio sections of the base unit and handset. The manual test mode is also required for the FCC testing in which the phone is tested for interference at the first, middle, and last RF channels.
The following features are provided in manual test mode.
• Able to set operating mode of the combo chip.
• Able to mute or unmute the audio path.
• Able to change the RF channel. (Both RX and TX)
• Able to transmit or receive data packet.
• Able to synchronize the security code.
BASE UNIT
1. Entering the Manual Test Mode
1. Press the key sequence [#], [2], [1], [1], [0] just after power
ON.
2. When enter the test mode, the [SPEAKERPHONE] LED and
[INTERCOM] LED light up, and happy tone is emitted.
2. Default Settings
• Channel set to 14. (out of 0 to 29)
• Combo set to active mode.
• Speakerphone unmute.
• TX audio path unmuted.
• RX audio path unmuted.
• TX power ON.
• Off hooked.
• Date transmission disabled.
3. SPEAKERPHONE Key Operation
1. Condition: Press the Operation: Toggle transmitter on/off, it only turn the TX power
on/off with no modulation.
Indication:Beep tone is emitted.
[1] key.
7. Condition: Press the [7] key. Operation: TX data on, it only send security code change command
out if the transmitter power ON.
Indication:Beep tone is emitted.
8. Condition: Press the [8] key. Operation: Base DTMF test, it will send the dight 3 DTMF to line. Indication:Beep tone is emitted and DTMF 3 gen. in line.
9. Condition: Press the [9] key. Operation: Stop DTMF test, it will stop the DTMF to line. Indication:Beep tone is emitted and stop DTMF.
10. Condition: Press the [0] key. Operation: Base will receive the handset security code change
command and toggle the [LINE] LED.
Indication:Beep tone is emitted and [LINE] LED is flashed.
11. Condition: Press the [*] key. Operation: Stop the da ta transmit, but don't turn the TX power
OFF.
Indication:Beep tone is emitted.
12. Condition: Press the [#] key. Operation: Increase the current channel to next, if 30 back to 1. Indication:Beep tone is emitted.
13. Condition: Press the Operation: Generate current ringer. Indication:Beep tone and ringer tone are emitted.
[REDIAL/PAUSE] key.
2. Condition: Press the [2] key. Operation: Toggle TX mute, it only toggle the TX path of combo
chip.
Indication:Beep tone is emitted.
3. Condition: Press the [3] key. Operation: Toggle mic mute pin, the mic mute pin defalt value in
test mode is high (mute).
Indication:Beep tone is emitted.
4. Condition: Press the [4] key. Operation: Toggle HF path switch function, the HF pin will be
toggle.
Indication:Beep tone is emitted.
5. Condition: Press the [5] key. Operation: Toggle RX mute function, it only toggle the TX path
of combo chip.
Indication:Beep tone is emitted.
6. Condition: Press the [6] key. Operation: Toggle spk mute pin, the spk mute pin defalt value in
test mode is low (unmute).
Indication:Beep tone is emitted.
14. Condition: Press the [FLASH] key. Operation: T oggle hook pin, the hook pin defalt value in test mode
is low (hook off).
Indication:Beep tone is emitted.
15. Condition: Press the [HOLD] key. Operation: Rewrite the EEPROM defalt value, ringer=1, flash
type=3 dialing type=tone, security code=000, last channel=1.
Indication:Beep tone is emitted.
16. Condition: Press the [INTERCOM] key. Operation: T oggle telsw pin, the telsw pin defalt v alue in test mode
is low.
Indication:Beep tone is emitted.
17. Condition: Press the [PGM] key. Operation: Enable the base to reprogram the security code. After
press the [PGM] key, the base will wait the security code change command within 2 second. If received, the base security code will be reprogram.
Indication: Beep tone is emitted and if received the command
gen.happy tone is emitted after reprogram security code.
8
SPP-N1025/N1026
18.
Condition: Press the [SPEED] key. Operation: Cleaar all two touch memory from EEPROM. Indication:Beep tone is emitted.
19.
Condition: Press the [SPEAKERPHONE] key. Operation: Release thetestmode. Indication:Beep tone is emitted.
4. Data Link
Data bits are encoded in manchester format for which bit “0” is represented by 500 µs low and 500 µs high while bit “1” by 500 µs high and 500 µs low. If data transmission is enabled, it will transmit data packet with the following fields continuously. (“0”=500 µs low and “1”=500 µs high)
• 8 bit preamble :0101010101010101
• 8 bit word sync :0110010010010110
• 20 bit security code :Restored from EEPROM
• 4 bit reserved data :01010101
• 8 bit command :0101010101010101
• 8 bit data :0101010101010101
If data transmission is enabled, it will toggle the [LINE] LED every time when a data packet is received. (No security code would be checked)
HANDSET
1. Entering the Manual Test Mode
1. Press the [PGM] key.
2. Select the “DIAL MODE” menu by pressing v or V keys.
3. Press the key sequence
4. When enter the test mode, happy tone is emitted, and the LCD displays as shown below.
[SELECT], [2], [1], [0], [4].
[4] key
Operation: Increment channel by 1. Indication:CH=CH+1
[5] key
Operation: Mute TX audio path. Indication:TxM=1
[6] key
Operation: Mute RX audio path. Indication:RxM=1
[7] key
Operation: Decrement channel by 1. Indication:CH=CH–1
[8] key
Operation: Mute TX audio path. Indication:TxM=0
[9] key
Operation: Mute RX audio path. Indication:RxM=0
[0] key
Operation: Start LCD segment test. Indication:Various patterns shown on LCD for a few seconds.
[*] key
Operation: Set combo to active mode.
Enable data transmission.
Indication:DA=1
[#] key
Operation: Disable data transmission. Indication:DA=0
2. Default Settings
• Channel set to 14. (out of 00 to 29)
• Combo set to active mode.
(0: inactive mode, 1: RX mode, 2: active mode)
• TX audio path unmuted. (0: unmuted, 1: muted)
• RX audio path unmuted. (0: unmuted, 1: muted)
• Date transmission disabled. (0: disabled, 1: enabled)
• Battery detection.
(“E” icon on: RSSI detection, “E” icon off: battery detection)
3. Key Definition
[1] key
Operation: Set combo to inactive mode. Indication:CB=0
[2] key
Operation: Set combo to RX mode. Indication:CB=1
[3] key
Operation: Set combo to active mode. Indication:CB=2
[ONE TOUCH] key
Operation: Switch to RSSI detection. Indication:“E” icon turns off.
[REDIAL] key
Operation: Switch to battery detection. Indication:“E” icon turns on.
[OFF] key
Operation: Release the test mode.
Note: All keys pressed will emit the key tone.
4. Data Link
Data bits are encoded in manchester format for which bit “0” is represented by 500 µs high and 500 µs low while bit “1” by 500 µs low and 500 µs high. If data transmission is enabled, it will transmit data packet with the following fields continuously. (“0”=500 µs low and “1”=500 µs high)
• 8 bit preamble :1010101010101010
• 8 bit word sync :1001101101101001
• 20 bit security code :Restored from EEPROM
• 4 bit reserved data :10101010
• 8 bit command :1010101010101010
• 8 bit data :1010101010101010 No matter data transmission is enabled or not, it toggles the “NEW” icon every time when a data packet is received. (No secu­rity code would be checked)
9
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