Sony SPP-S9003 Service Manual

SPP-S9003

SERVICE MANUAL

SPECIFICATIONS

E Model

MICROFILM

CORDLESS TELEPHONE

TABLE OF CONTENTS

1. GENERAL .......................................................................... 3

2. DISASSEMBLY

2-1. Battery Case LID (Handset).................................................. 6

2-2. Cabinet (Rear) (Handset) ...................................................... 6

2-3. Hand Main Board (Handset) ................................................. 6

2-4. Cabinet and Boards (Base Unit) ........................................... 6

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.

3. 900 MHz SYSTEM OPERATION

3-1. Access Method...................................................................... 7

3-2. Protocol ................................................................................. 7

4. TEST MODE

4-1. Base Unit Test Mode A ....................................................... 10

4-2. Base Unit Test Mode B ....................................................... 11

4-3. Handset T est Mode.............................................................. 12

4-4. RF Testing........................................................................... 13

5. ELECTRICAL ADJUSTMENTS

5-1. Base Unit Section................................................................ 16

5-2. Handset Section .................................................................. 17

6. DIAGRAMS

6-1. IC Block Diagram ............................................................... 19

6-2. Printed Wiring Board – Base Unit Section – ...................... 20

6-3. Schematic Diagram – Base Unit (1/2) Section – ................ 22

6-4. Schematic Diagram – Base Unit (2/2) Section – ................ 23

6-5. Printed Wiring Board – Handset Section – ......................... 24

6-6. Schematic Diagram – Handset Section –............................ 25

6-7. IC Pin Functions ................................................................. 26

7. EXPLODED VIEWS

7-1. Handset Section .................................................................. 29

7-2. Base Unit Section................................................................ 30

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK ! OR DO TTED 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 MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

8. ELECTRICAL PARTS LIST ........................................ 31

SECTION 1

GENERAL

This section is extracted from instruction manual.

456

SECTION 2

DISASSEMBLY

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

2-1. BATTERY CASE LID (HANDSET)

Nickel cadmium battery

Battery case lid

2-2. CABINET (REAR)(HANDSET)

Cabinet (rear)

Two screws (BTP 2.6x8)

2-3. HAND MAIN BOARD (HANDSET)

Screw (BTP 2.6x12)

Two screws (BTP 2.6x8)

Hand main board

Screw (BTP 2.6x8)

Connector (CN601)

Helical antenna

2-4. CABINET AND BOARDS (BASE UNIT)

Cabinet (Upper)

!¡

Button (H.L.)

LED board

T wo screws

(BTP2.6x8)

Cabinet (Lower) assy

T wo screws

(P3x10)

Three connectors

Base (Main)

board

!™

Lens

(Basic)

Antenna terminal

Four screws

(P3x10)

T wo screws

(P3x10)

SECTION 3

BASE UNIT HANDSET

System ID

confirmed

System ID

confirmed

(Park Detect)(Park Detect)

(PARK)

System Parameters

A-Frame

900 MHz SYSTEM OPERATION

3-1. ACCESS METHOD

1. Transfer format & rate

The transfer format & rate of our system is as follows;

Table 3-1. Transfer method

Access method FDMA-TDD Channel number 14 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 14. RF channel numbers & center frequencies are specified as follows.

Table 3-2. Channel number & Channel frequency

Channel Channel Center Frequency (MHz) Number UNIT CH PLAN TEST MODE CH PLAN

1 907.2 904.2 2 908.4 904.8 3 909.6 906.0 4 910.8 907.2 5 912.0 908.4 6 913.2 909.6 7 914.4 910.8 8 915.6 912.0

9 916.8 913.2 10 918.0 914.4 11 919.2 915.6 12 920.4 916.8 13 921.6 918.0 14 922.8 919.2 15 920.4 16 921.6 17 922.8 18 924.0 19 925.2 20 925.8

*Note) The UNIT has 14 channels according to the UNIT CH

PLAN while the number of channels which can be used in the test mode are those in the TEST MODE CH PLAN.

3-2. 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 BASE UNIT and HANDSET, 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 BASE UNIT and HANDSET, both of BASE UNIT and HANDSET need to have the same system ID. When “power” is applied to this system, the system have to do Initial Acquisition in order to hav e the same system ID. It is to exchange a parameter when the HANDSET is parked on the BASE UNIT , as soon as the system do System P arameters Reinitialization.

3. System parameter re-initialization

This System Parameters Re-initialization can realize that the HANDSET is parked on the BASE UNIT . So after the B ASE UNIT recognized to be parked the HANDSET, the BASE UNIT 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 HANDSET send the A-Frame to the B ASE UNIT after the HANDSET received the system parameter, and then the BASE UNIT send the A-Frame to the HANDSET. The process of System Parameters Re-initialization is as follows.

Fig. 3-1. System Parameters Re-initialization

4. Stand-by Mode Operation

(1) HANDSET

When the HANDSET is the stand-by mode (sleep mode), the HANDSET do the intermittent operation for power save, because the HANDSET 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

10 sec

1 sec

2 msec

2 msec 10 msec

10 msec

RXTXRX

Heart Beat (Exchange A-Frame for Link confirmation purpose)

Fig. 3-2. Stand-by mode operation (HANDSET)

(2) BASE UNIT

The BASE UNIT is supplied the power by AC line. W hile the BASE UNIT is the stand-by , the BASE UNIT is al ways a wake state. While the BASE UNIT monitors the current channel, the BASE UNIT 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 BASE UNIT can not receive the A-Frame of Heart-beat from the HANDSET, it become “link error”, and the system become error recovery mode.

5. Link Establishment

According to the following Fig. 3-1, 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

Fig. 3-3. Link Establishment protocol

A-Frame V-Frame V-Frame V-Frame V-Frame

System ID

confirmed

Master

Time Slot

Master TX

Master RX

Slave RX

Slave TX

Trip Delay

TX RX TX RX TX

A' V

Fig. 3-4. Link Establishment Timing Chart

6. State Change/Tarmination

After the RF link between HANDSET and BASE UNIT was established, a movement of each state (State: ON-Hook, OFF-Hook, PAGE, InterCom, etc) is sent through supervisory bits.

VA'

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.

SECTION 4

TEST MODE

4-1. BASE UNIT TEST MODE A

Manual System Test Mode

[Start-up]

1. Set the DIAL MODE switch to P (PULSE), and turn on the power while pressing the HANDSET LOCATOR key.

2. Change the DIAL MODE switch from P (PULSE) to T (TONE) b P (PULSE), and release the HANDSET LOCA T OR key to start up.

3. After starting up Test Mode A, perform dial test.

4. The TEST MODE A state will be set after the dial test.

5. In test mode idling A, pressing the HANDSET LOCA TOR ke y with the P (PULSE)/T (TONE) switch set to P (PULSE) state switches to BASE UNIT TEST MODE A-1.

DIAL MODE switch

P (PULSE) side T (TONE) side

Test Mode Idle A-1 Test Mode Idle A-2

[Dial Test]

After starting BASE UNIT TEST Mode A, close the circuit for about 500 msec after start, and dial PAUSE , 0 (DP), wait 2 seconds, 1 (Tone), 4 (Tone), 8 (Tone), # (Tone) in this order.

[Ring Detect Test]

1. Rings the Normal Ringer synchronized with an external call coming in, and blinks the IC501 Pin !™ (New Call LED/VMWI LED) at the same time.

[Charge Detection and ART0 Output Test]

1. Detects that the charge detection terminal IC501 Pin @∞ (-P ARKP) has turned from H to L, and outputs a square waveform signal (2.4 kbps) from the ART0 ter minal.

2. Clears the EEPROM contents at the same time.

[Charge Control Test]

1. When the IC501 Pin !• input (BATT_CHK) changes from L, H, to L during charge detection, the IC501 Pin !¶ output (CHRG_CTL) will output L, H, LH, L, to H only once.

[Branch Detection Test]

When the shared phone is detected to be off the hook and the Branch detection terminal IC501 Pin (¢ (EXT_DET) detects L, the VMWI LED is lit. When off-hook is detected and the Branch detection terminal IC501 Pin (¢ (EXT_DET) detects H, the VMWI LED is turned off.

Idle status

4-1-1. BASE UNIT Test Mode A-1

1. In test mode idling A and the P (PULSE)/ T (TONE) switch set to the P (PULSE) state, pressing the HANDSET LOCATOR key changes the mode as shown below.

2. Setting the P (PULSE)/ T (TONE) switch from P (PULSE) to T (TONE) in the BASE UNIT test mode A-1 in any time also enables the mode to be changed to the BASE UNIT test mode idling A.

• This mode is intended for checking that the IC501 line is operat-

ing properly. Add the LINEIN signal and check that the signal is output to the SPEAKER OUT.

HANDSET LOCATIOR

button pressing count

3 4

CODEC Forward Loopback (L1) (Line: Talking state) (CODEC LINE IN n SPEAKER OUT) ADPCM Forward Loopback (L2) (Line: Talking state) (CODEC LINEIN n ADPCM n CODEC SPERKER OUT) Does not function Returns to BASE UNIT TEST MODE • IDLING A

Test mode

Note: If the LEDs are lit due to the idling state test, clear all the

LEDs, and return to the idling state.

[Base Set AUDIO Input/Output Level test [CODEC Forward Loop Back (LI) Mode]]

Audio analyzer

osc out

TP101

TP102

Level meter

TP911

GND

TP912

Base main mount

• Short: TP911 GND

Setting:

Setting: OSC=–13.0 dBV (Open terminal)

MOD=1 kHz

4-2. BASE UNIT TEST MODE B

ANTENNA

Pickup coil

Frequency counter

Manual System Test Mode

[Start-up]

1. Set the DIAL MODE switch to T (TONE), and turn on the power while pressing the HANDSET LOCATOR key.

2. Change the DIAL MODE switch from T (TONE) to P (PULSE)b T (TONE), and release the HANDSET LOCATOR key to start up.

3. The TEST MODE B state will be set.

4. In test mode idling B, pressing the HANDSET LOCATOR key with the P (PULSE)/T (TONE) switch set to T (T ONE) state switches to BASE UNIT TEST MODE B-1.

DIAL MODE switch

T (TONE) side P (PULSE) side

Test Mode Idle B-1 *1 Test Mode Idle B-2 *2

*1 Radio block: TDD mode (master timing)

Audio block: Line speech status

*2 Radio block: Standby status

Audio block: Line open

[Stutter T one Detection]

1. Monitors the stutter tone detection terminal IC501 pin (∞ (Stutte_Det) at all times and lights the VMWI LED when 5 pulses are detected like in actual operations.

Idle status

4-2-1. BASE UNIT Test Mode B-1

1. In test mode idling B with the P (PULSE)/T (TONE) switch set to the T (TONE) state, pressing the HANDSET LOCATOR key changes the mode as shown below.

2. Setting the P (PULSE)/T (TONE) switch from T (TONE) to P (PULSE) in BASE UNIT test mode B-1 any time also enables the mode to be changed to BASE UNIT test mode idling B.

HANDSET LOCATOR

button pressing count

1ch single carrier continuous transmission mode

Radio mode

(high power)

10ch single carrier continuous transmission mode

(high power)

20ch single carrier continuous transmission mode

(high power)

1ch continuous transmission mode

(high power)

1ch continuous transmission mode (middle power)

1ch continuous transmission mode (low power)

10ch continuous transmission mode (high power)

10ch continuous transmission mode

(middle power)

10ch continuous transmission mode (low power) 10 11

20ch continuous transmission mode (high power)

20ch continuous transmission mode

(middle power) 12 13 14 15 16

20ch continuous transmission mode (low power) 1ch continuous reception mode 10ch continuous reception mode 20ch continuous reception mode Returns to BASE UNIT TEST MODE • IDLING B

Note: If the LEDs are lit due to the idling state test, clear all the

LEDs, and return to the idling state.

4-2-2. Ending the Base Unit Test Mode

1. To end the base unit test mode, turn off the power of the base unit.

[BASE UNIT carrier frequency measurement [Single carrier 1CH continuous transmission]]

Setting:

Spec: 904.2 MHz ± 27KHz

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