Sony SPP-Q123 User manual

– 1 –
MICROFILM
E Model
SERVICE MANUAL
CORDLESS TELEPHONE
SPP-Q123
SPECIFICATIONS

– 2 –
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
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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.
1. GENERAL .......................................................................... 3
2. DISASSEMBLY
2-1. Battery Case Lid ................................................................... 7
2-2. Cabinet (Rear) ....................................................................... 7
2-3. Hand Main Board.................................................................. 7
3.TEST MODE ....................................................................... 8
4. ELECTRICAL ADJUSTMENTS ............................... 13
5. DIAGRAMS
5-1. Block Diagrams
• Base Unit Section ............................................................. 15
• Handset Section ................................................................17
5-2. Printed Wiring Board – Base Unit Section – ...................... 21
5-3. Schematic Diagram – Base Unit Section – ......................... 23
5-4. Schematic Diagram – Handset Section – ........................... 25
5-5. Printed Wiring Board – Handset Section – ......................... 27
5-6. IC Pin Function Description ............................................... 29
6. EXPLODEDVIEWS
6-1. Handset Section .................................................................. 31
6-2. Base Unit Section................................................................ 32
7. ELECTRICAL PARTS LIST ........................................ 33
TABLE OF CONTENTS

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SECTION 1
GENERAL
1Charging terminals
2Hang-up tab
3Telescopic antenna
4CHARGE lamp
5PAGE key
1
23
4
5
678
5
4
3
2
1
7
8
9
!º
!¡
!™
6
LOCATION AND FUNCTION OF CONTROLS
BASE UNIT
6LINE jack
7DIAL MODE switch
8DC IN 9V jack
HANDSET
1SPEED DIAL
2TALK button
3TALK/BATT low lamp
4OFF button
5SPEAKER
6Helical antenna
7FLASH button
8Dialing keys
9CHANNEL button
0REDIAL/PAUSE button
!¡ PGM
!™ Microphone

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This section is extracted from
instruction manual.

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– 6 –

– 7 –
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. BATTERY CASE LID
Nickel cadmium battery
Battery case lid
1
2
3
4
Screws (2.6x8)
Cabinet (rear)
1
12
2
3
1 Screws (2.6x8)
2 Screw (2.6x12)
4 Connector (CN101
)
Hand main board Helical antenna
3
2-2. CABINET (REAR)
2-3. HAND MAIN BOARD

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SECTION 3
TEST MODE
BASE UNIT SECTION
MANUALTEST MODE
Set the Test Mode:
1. Set the [DIALMODE] switch to “P” (pulse).
2. While pressing the [PAGE] key, switch on the power supply (Re-
set start).
3. With the [PAGE] key, still held down, switch the [DIALMODE]
switch “P” (pulse) n“T” (tone) n“P” (pulse).
4. When you release the [PAGE] key, test mode starts.
5. First dial “0” at 10 pps. Then output “1”, “4”, “8” and “#” with
DTMF.
6. Set to TX ON. Goes to external line state in 1 CH.
Release the Test Mode:
1. Pull out the AC adaptor and turn off the power.
MACHINETEST MODE
Set the Test Mode:
1. With one of the CH setting terminals in “H” input state, cause
Reset of Power ON. Equipment enters machine test mode.
2. Setting of CH according to logic input with CH setting terminal.
3. ON/OFF of TX is according to the input logic of the DIAL
MODE terminal.
Release the Test Mode:
1. Pull out the AC adaptor and turn off the power.
2. Remove the short plug and turn on the power again.
TP61 (M1)
TP62 (M2)
TP66 (TEST2)
TP63 (M3)
TP67 (TEST3)
TP65 (TEST1)
TP64 (M4)
TP106 (5V)
TP47 (DIAL MODE)
TP46(PAGE)
– base main board (conductor side) –

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Channel Setting:
During startup in machine test mode, make the following channel
settings by loading the terminal input data.
Machine Test Mode Input / Output:
1. Input (Input ports for other than main tasks)
2. Output (Output ports for other than main tasks)
Pin Name Pin No. Function Logic
M1 (TP61) 23
M2 (TP62) 24
M3 (TP63) 25
M4 (TP64) 26
DIAL MODE (TP47) 17 Setting the TX ON/OFF H(T) : OFF, L(P) : ON
Manual : Channel increment Incrementing of channels in order from 1 to 25.
PAGE (TP46) 16 Machine : Dial data "5" is output to DTMF/DP exchange
Key input with "L" input.
The first time there is out
p
ut of "5" with DTMF.
Setting the CH (channel) Refer to channel settig
29 Pin 28 Pin 27 Pin Operation with Operation with
TEST1 (TP65) TEST2 (TP66) TEST3 (TP67) CHARGE LED TX ON
L L L If RSSI(H) is detected : Light ON If RSSI(H) is detected : Light ON
L L H If RSSI(L) is detected : Light ON If RSSI(L) is detected : Light ON
L H L If TX LOCK is detected : Light OFF If TX LOCK is detected : Light OFF
L H H If RX LOCK is detected : Light OFF If RX LOCK is detected : Light OFF
H L L BEEP output
H L H ID CODE output
H H L If RING is detected : Light ON If RING is detected : Light ON
H H H If PAGE KEY is input : Light ON If PAGE KEY is input : Light ON
Pin Name Pin No. Function H Logic L Logic
CHARGE DET (TP21) 18 State in section 1. Input Refer to section 1. Input
Pin No. 23 24 25 26 TX frequency RX frequency
Channel M1(TP61) M2(TP62) M3(TP63) M4(TP64) (MHz) (MHz)
CH1 H L L L 43.720 48.760
CH2 L H L L 43.740 48.840
CH3 HHL L 43.820 48.860
CH4 L L H L 43.840 48.920
CH5 43.920 49.020
CH6 43.960 49.080
CH7 44.120 49.100
CH8 44.160 49.160
CH9 44.180 49.200
CH10 44.200 49.240
CH11 44.320 49.280
CH12 44.360 49.360
CH13 44.400 49.400
CH14 H L H L 44.460 49.460
CH15 L H H L 44.480 49.500
CH16 H H H L 46.610 49.670
CH17 L L L H 46.630 49.845
CH18 46.670 49.860
CH19 46.710 49.770
CH20 46.730 49.875
CH21 46.770 49.830
CH22 46.830 49.890
CH23 H L L H 46.870 49.930
CH24 L H L H 46.930 49.990
CH25 H H L H 46.970 49.970
TEST1 L L H H 43.780 48.800
TEST2 H L H H 43.890 48.970
TEST3 L H H H 46.800 49.910
TEST4 HHHH 46.900 49.950

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HANDSET SECTION
MANUALTEST MODE
Set the Test Mode:
1. Enter the test mode by pressing -key while pressing 1key
and [TALK] when in idle condition.
(Key operation -n1n[TALK])
2. The RINGER willringfor500msecwhenthetestmodeis started.
3. Measurement mode of consumption current. (42# state. Refer to
2-3.)
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 -, -and [#] key.
2. Turn off the power. (Remove the battery and replace them.)
MACHINETEST MODE
Set the Test Mode:
1. When power on reset is applied while a “H” (high) is input the
TEST SW(TP43) terminal (IC501 40pin), the RING (Level H,
500msec) sounds.
2. Following that, at a timing in which the TEST SW terminal has
“H” (high) input, there is output of “L” (low) by the CH (chan-
nel) setting control terminal. Then there is PLL setting to the
CH which was read to wit the CH setting terminal according to
that “L” (low) output.
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. Turn off the power.
2. Remove the short plug and turn on the power.
TP43 (TEST SW)
TP36 (H) TP44 (TEST ACT)
TP35 (TALK LED)
TP55 (KEY LED) TP33 (TEST CH)
TP17(ROW1)
TP16 (ROW2)
TP15 (ROW3)
TP14 (ROW4)
TP13 (ROW5)
– hand main board (conductor side) –
IC101 IC501