Sony SPP-SS964 Service Manual
SPP-SS964
SERVICE MANUAL
SPECIFICATIONS
E Model
AC power adaptor (AC-T46)
Telephone line cord
Wall bracket/stand for base phone
Rechargeable battery pack (BP-T24)
Directories
CORDLESS TELEPHONE
MICROFILM
TABLE OF CONTENTS
1. SERVICING NOTES............................................... 3
2. GENERAL
Setting up the base phone ............................................... 4
Preparing the battery pack .............................................. 4
Making calls .................................................................... 5
Receiving calls ................................................................ 6
One-touch dialing............................................................ 6
Speed dialing ................................................................... 7
Phone directory ............................................................... 7
Switching the phones during a call................................. 8
Talking between the phones (Intercom) ......................... 8
Voice paging .................................................................... 9
Transferring a call ........................................................... 9
3. DISASSEMBLY ......................................................... 10
4. 900 MHz SYSTEM OPERATION
4-1. Access Method ................................................................ 13
4-2. Protocol ........................................................................... 13
5. TEST MODE
5-1. Base Unit Section............................................................ 16
5-2. Handset Section............................................................... 17
5-3. RF Testing ....................................................................... 18
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS
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.
6. ELECTRICAL ADJUSTMENTS
6-1. Base Unit Section............................................................ 20
6-2. Handset Section............................................................... 21
7. DIAGRAMS
7-1. Block Diagram – BASE UNIT Section –....................... 25
7-2. Block Diagram – HANDSET Section – ......................... 27
7-3. Notes for Printed Wiring Boards
and Schematic Diagrams ................................................ 29
7-4. Printed Wiring Board
– BASE MAIN Board (Side A)/
BASE MICROPHONE Board – ..................................... 31
7-5. Printed Wiring Board
– BASE MAIN Board (Side B) – ................................... 33
7-6. Schematic Diagram – BASE MAIN Section (1/3) – ...... 35
7-7. Schematic Diagram – BASE MAIN Section (2/3) – ...... 37
7-8. Schematic Diagram – BASE MAIN Section (3/3) – ...... 39
7-9. Printed Wiring Board – BASE KEY Section – ............. 41
7-10. Schematic Diagram – BASE KEY Section – ................ 42
7-11. Printed Wiring Board – HAND MAIN Section – ......... 43
7-12. Schematic Diagram – HAND MAIN Section – ............ 45
7-13. IC Pin Function Description ........................................... 48
8. EXPLODED VIEWS ................................................ 53
9. ELECTRICAL PARTS LIST ............................... 55
– 2 –
SECTION 1
SERVICING NOTES
CABLE FASTENING METHOD
• TDD noise may be generated in the intercom or handset speech
depending on how the cables are fastened, and therefore fasten
the cables as shown below.
1 Erect the cabinet (upper) 90 degrees.
2 Insert the wires in the ribs at A and B.
3 Clamp them at C and D.
4 Affix the sponges at E and F positions.
5 Fix the cables with tapes at G to L positions.
Note:Tape over the
diode (D1001).
L
Direction for drawing
speaker lead wires
A
G
H
black
B
Cable fasting direction
red
F
K
Affix position
Bottom flushed
white
D
°
90
E
J
Note:Make sure the wires do not
rise above the shield plate.
I
NG
C
clamp stopper
25~30 mm
Cable fasting direction
Cable fasting direction
OK
– 3 –
SECTION 2
GENERAL
This section is extracted from
instruction manual.
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
– 9 –
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
• HANDSET
REAR CABINET
2
two screws
(BTP 2.6
×
10)
1
Remove the battery case lid
to direction of the arrow
A
A
.
5
Remove the rear cabinet to
direction of the arrow B.
3
two claws
4
claw
B
3
two claws
– 10 –
HAND MAIN BOARD
s
)
3
1
connector
screw
(BTP2.6 × 8)
4
Removal of the HAND MAIN
board direction of the arrow A.
(CN401)
A
2
four screws
(P3 × 16)
1
connector
(CN302)
3
three screw
(BTP2.6 × 8
– 11 –
• BASESET
s
BASESET (UPPER) ASS’Y
1
two screws
(P3
×
12)
3
baseset (upper) ass’y
1
two screws
(P3
×
12)
2
two claw
BASE MAIN BOARD
1
connector
(CN601)
1
connector
(CN202)
3
four screws
(BTP2.6 × 8)
2
connector
(CN802)
5
BASE MAIN board
4
four screws
(P3 × 16)
– 12 –
SECTION 4
900 MHz SYSTEM OPERATION
4-1. ACCESS METHOD
1. Transfer format & rate
The transfer format & rate of our system is as follows;
Table 4-1. Transfer method
Access method FDMA-TDD
Channel number 20 channel
Channel spacing 1.2 MHz
Modulation method DBPSK
Baseband transfer rate 960 Kbps
Spread method Direct Sequence Spread Spectrum
Chip rate 12 chips/bit
Data transfer rate 80 Kbps
2. Channel Number & Frequencies
RF channels occupy the frequency band 902 – 928 MHz are numbered 1 to 20.
RF channel numbers & center frequencies are specified as follows.
Table 4-2. Channel number & Channel frequency
Channel Channel Center Channel Channel Center
Number Frequency (MHz) Number Frequency (MHz)
1 903.6 11 915.6
2 904.8 12 916.8
3 906.0 13 918.0
4 907.2 14 919.2
5 908.4 15 920.4
6 909.6 16 921.6
7 910.8 17 922.8
8 912.0 18 924.0
9 913.2 19 925.2
10 914.4 20 926.4
4-2. PROTOCOL
1. General
This system realizes the TX/RX superframe by TDD system. The
relation of master/slave dose not decide identification regarding
the protocol between BS and HS, but the initiated side is the master and the requested side is the slave when the RF link has been
established.
2. Initial acquisition
In order to establish the RF link between BS and HS, both of BS
and HS need to have the same system ID. When “power” is applied to this system, the system have to do Initial Acquisition in
order to have the same system ID. It is to exchange a parameter
when the HS is parked on the BS, as soon as the system do System
Parameters Re-initialization.
3. System parameter re-initialization
This System Parameters Re-initialization can realize that the HS
is parked on the BS. So after the BS recognized to be parked the
HS, the BS calculates a system parameter, and then it outputs this
data from the ARTO port, and then the system establishes the RF
link. In order to establish this link, the HS send the A-Frame to the
BS after the HS received the system parameter, and then the BS
send the A-Frame to the HS. The process of System Parameters
Re-initialization is as follows.
Base Station Handset
(PARK)
(Park Detect)(Park Detect)
System Parameters
A-Frame
System ID
confirmed
A-Frame
Fig. 4-1. System Parameters Re-initialization
System ID
confirmed
– 13 –
4. Stand-by Mode Operation
(1) HS
When the HS is the stand-by mode (sleep mode), the HS do
the intermittent operation for power save, because the HS is
the battery operation.
This process of stand-by mode operation is as follows.
10 sec
Heart-Beat
10 sec
Heart-Beat Heart-Beat
RX RX RX RX RX
1 sec 1 sec
RX
10 sec
1 sec
2 msec
2 msec 10 msec
10 msec
RXTXRX
Heart-Beat
(Exchange A-Frame for Link confirmation purpose)
Fig. 4-2. Stand-by mode operation (HS)
(2) BS
The BS is supplied the power by AC line. While the BS is the
stand-by, the BS is always a wake state. While the BS monitors the current channel, the BS monitors also the other channel at the same time
Because if the current channel can not use by some interference, the system needs the clear channel information as a part
of system parameter for a channel hop.
If the BS can not receive the A-Frame of Heart-beat from the
HS, it become “link error”, and the system become error recovery mode.
RX
– 14 –
5. Link Establishment
Master TX
Master RX
Slave RX
Slave TX
Master
Time Slot
Trip Delay
TX RX TX RX TX
AV
A' V
V
V
VA
VA'
V
According to the following Fig. 4-1, the requested side for link
establishment is the master.
The system have to exchange the A-Frame for link establishment,
and each system ID should be the same ID, and then the system
link is established.
The protocol and timing chart of link establishment are as follows.
Master Slave
A-Frame
System ID
confirmed
A-Frame
V-Frame
V-Frame
V-Frame
V-Frame
Fig. 4-3. Link Establishment protocol
System ID
confirmed
Fig. 4-4. Link Establishment Timing Chart
6. State Change/Termination
After the RF link between HS and BS was established, a movement of each state (State: ON-Hook, OFF-Hook, P A GE, InterCom,
etc) is sent through supervisory bits.
7. Error Recovery
In case of the following situation, The system becomes “Error
Recovery Mode”.
(1) The system failed to move to “Heart-Beat” during “Stand-by
mode, or failed “link establishment”.
(2) The system failed to keep the link.
– 15 –
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