PT568 Service Manual
18
Face the charger, from left to right:
B-: Charging output negative terminal
TYPE: Battery type detection
Suspended: Ni-MH battery
Grounded: Li-poly battery
TEMP: Battery temperature detection.
B+: Charging output positive terminal
Appendix 1 Abbreviations
AMP: Amplify, amplifier
ANT: Antenna
APC: Automatic Power Control
BPF: Band Pass Filter
CTCSS: Continuous Tone Control Squelch System
DCS: Digital Code Squelch
DEMOD: Demodulation
E
2
PROM: Electrical Erasable Programmable Read Only Memory
HPF: High Pass Filter
IDC: Instantaneous Deviation Control
IF: Intermediate Frequency
LED: Light-Emitting Diode
LNA: Low Noise Amplifier
LPF: Low Pass Filter
MCU: Micro Control Unit
MIC: Microphone
MOD: Modulation
MONI: Monitor
PLL: Phase Lock Loop
PTT: Push-to-talk
RX: Receiver
SPK: Speaker
TCXO: Temperature Compensated Crystal Oscillators
TX: Transmitter
UL: Un-lock
VCO: Voltage Control Oscillator
Appendix 2 Electronic Parts List
No. Part No. Description Unit PCS Position Mark
1 101-00568U-R02
PT568PCB / UHF, four layers, FR4, 1.2mm, PT568U-090409,
ROHS
pcs 1
2 102-9140NR-R01 Reset IC / PST9140NR, ROHS pcs 1 IC11
3 102-A31136-R01 IF (FM) demodulation IC / TA31136FN,SSOP, ROHS pcs 1 IC5
4 102-AT2408-R02 Memory IC / AT24C08BN-SH, ROHS pcs 1 IC9
5 102-B15E03-R01 PLL IC / MB15E03SL,PLL,16-PIN,SSOP, ROHS pcs 1 IC1
6 102-DA8541-R01 Audio power amplifier / TDA8541,SO8, ROHS pcs 1 IC8
7 102-HT7130-R01 Voltage regulator IC / HT7130-1,SOT-89, ROHS pcs 1 IC14
8 102-HT7150-R01 Voltage regulator IC / HT7150-1, ROHS pcs 1 IC12
9 102-M2902V-R01 Operational amplifier / NJM2902V,OP-AMP, ROHS pcs 3 IC4, IC6, IC7
10 102-M2904V-R01 Operational amplifier / NJM2904V,OP-AMP, ROHS pcs 1 IC3
11 103-00MA77-R01 Chip HF switch diode / MA77,0805, ROHS pcs 1 D1
12 103-1SR154-R01 Chip rectifying diode / 1SR154-400(ROHM), ROHS pcs 1 D33
13 103-1SS372-R01 Chip switch diode / 1SS372(TOSHIBA), ROHS pcs 1 D13
14 103-1SV278-R01 Chip variable capacitor diode / 1SV278, ROHS pcs 2 D9, D10
15 103-1SV325-R01 Chip variable capacitor diode / 1SV325, ROHS pcs 2 D8, D11
16 103-A2S111-R01 Chip switch diode / 0603,MA2S111(PANASONIC), ROHS pcs 3 D15, D16, D25
17 103-DAN222-R01 Chip switch diode / DAN222,(ROHM), ROHS pcs 1 D308
18 103-HSC277-R01 Chip diode / waveband switch,HSC277(HITACHI), ROHS pcs 3 D3, D6, D7
19 103-HVC131-R01 Chip HF switch diode / 0603,HVC131(HITACHI), ROHS pcs 2 D4, D5
20 103-HVC350-R01 Chip variable capacitor diode / 0603,HVC350B(HITACHI), ROHS pcs 6 D21, D22, D23, D24, D26, D30
21 103-HZU5AL-R01 Chip voltage regulator diode / HZU5ALL(HITACHI), ROHS pcs 1 D14
22 103-L190YG-R01 Chip LED / 0603, green, H19-213SYGC, ROHS pcs 2 D20, D29
23 103-MHC190-R02 Chip LED / 0603, red, 19-21SURC/S530-A2/TR8, ROHS pcs 1 D28
24 103-RB706F-R01 Chip switch diode / RB706F-40,SOT-323, ROHS pcs 1 D17
25 103-RKV500-R01 Chip variable capacitor diode / 0805,RKV500KG, ROHS pcs 1 D12
26 104-A144EE-R01 Chip triode / DTA144EE(ROHM), ROHS pcs 4 Q17, Q33, Q34, Q40
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