Sony SPP-Q123 Service Manual
SPP-Q123
SERVICE MANUAL
SPECIFICATIONS
E Model
MICROFILM
CORDLESS TELEPHONE
– 1 –
TABLE OF CONTENTS
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. EXPLODED VIEWS
6-1. Handset Section .................................................................. 31
6-2. Base Unit Section................................................................32
7. ELECTRICAL PARTS LIST ........................................ 33
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 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.
– 2 –
LOCATION AND FUNCTION OF CONTROLS
BASE UNIT
2
5
SECTION 1
GENERAL
3
4
1
1 Charging terminals
2 Hang-up tab
3 Telescopic antenna
4 CHARGE lamp
5 PAGE key
HANDSET
5
4
6
6
7
8
6 LINE jack
7 DIAL MODE switch
8 DC IN 9V jack
1 SPEED DIAL
2 TALK button
3 TALK/BATT low lamp
4 OFF button
5 SPEAKER
6 Helical antenna
7 FLASH button
8 Dialing keys
9 CHANNEL button
0 REDIAL/PAUSE button
!¡ PGM
!™ Microphone
3
2
1
7
8
9
!º
!¡
!™
– 3 –
This section is extracted from
instruction manual.
– 4 –
– 5 –
– 6 –
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
2-2. CABINET (REAR)
Cabinet (rear)
3
2
Screws (2.6x8)
4
2-3. HAND MAIN BOARD
1
Screws (2.6x8)
Hand main board
1
3
3
2
2
1
2
Screw (2.6x12)
4
Connector (CN101
Helical antenna
– 7 –
SECTION 3
TEST MODE
BASE UNIT SECTION
MANUAL TEST MODE
Set the Test Mode:
1. Set the [DIALMODE] 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 [DIALMODE]
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.
– base main board (conductor side) –
MACHINE TEST 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.
TP46(PAGE)
TP47 (DIAL MODE)
TP66 (TEST2)
TP62 (M2)
TP61 (M1)
TP63 (M3)
TP67 (TEST3)
TP65 (TEST1)
TP64 (M4)
TP106 (5V)
– 8 –
Channel Setting:
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
p
During startup in machine test mode, make the following channel
settings by loading the terminal input data.
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
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
HH
L L 43.820 48.860
Machine Test Mode Input / Output:
1. Input (Input ports for other than main tasks)
Setting the CH (channel) Refer to channel settig
Key input with "L" input.
The first time there is out
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
2. Output (Output ports for other than main tasks)
Pin Name Pin No. Function H Logic L Logic
CHARGE DET (TP21) 18 State in section 1. Input Refer to section 1. Input
– 9 –
ut of "5" with DTMF.
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