PSW-D112 (serv.man4) - JBL Audio Service Manual (repair manual). Page 2

C6 (Rev0)

4.7uf 100V 80/-20% Electrolytic redial NP

C6 (Rev1)

4.7uf 100V 80/-20% Electrolytic redial NP

TR2

MPS A13 30V NPN(Darl)

R4a/b/c

0.1 0.5W 5% metal film

R9

3.3 5W 5% ceramic wirewound

R15

100k 0.5W 5% carbon film

DBR

Bridge Rect 200V Use only factory replacement.

R1

10M 0.25W 5% carbon film

R16, 17

1.8k 5W 5% ceramic wirewound

R33 (Rev0) only) 332 0.5W 5% carbon film

R50 (Rev0) only) 332 0.5W 5% carbon film

R52, 57

2.7k 5W 5% ceramic wirewound

R61

3.9k 3W 5% carbon film

S64AMI

Power output module.  Use only factory
replacement

Faceplate

Faceplate.  Use only factory replacement

CMC1

Use only factory replacement

L1

Use only factory replacement

Fuse PCB

Use only factory replacement

Main PCB

Use only factory replacement

4700uF,50V electrolytic filter caps.  Be sure
replacement part is at least the same
working voltage and capacitance rating.
Also the lead spacing is important.
Incorrect spacing may cause premature
failure due to internal cabinet pressure and
vibration.

2

F1

PWRCORD

TRX1

C1, 2

Transformer.  Use only factory replacement.

SPT-2 or better with polarized plug, UL
approved wire with the hot side to fused
side.  Use with factory replacement panel
strain relief only.

Fuse SLO BLO 1.25A 250V UL approved

Any person performing service of this unit will be exposed 
to hazardous voltages and the risk of electric shock.  It is 
assumed that any person who removes the amplifier from 
this cabinet has been properly trained in protecting against 
avoidable injury and shock.  Therefore, any service 
procedures are to be performed by qualified service 
personal ONLY!

Before returning the unit to the customer, perform a 
leakage or resistance test as follows:

Leakage Current. Note there is no power switch on this 
unit.  When the power plug  is plugged in, the unit is live.  
Connect the unit to its rated power source.  Using an 
ammeter, measure the current between the neutral side of 
the AC supply and chassis ground of the unit under test.  If 
leakage current exceeds 0.5A, the unit is defective.  
Reverse the polarity of the AC supply and repeat.

Resistance.  Measure the resistance from either side of the 
line cord to chassis ground.  If it is less than 500k ohms, the 
unit is defective.

WARNING!  DO NOT return the unit to the customer if it 
fails one of these tests until the problem is located and 
corrected.

Before the amplifier is plugged in, be sure its rated voltage 
corresponds to the voltage of the AC power source to be 
used.  Incorrect voltage could cause damage to the 
amplifier when the AC power cord is plugged in.  Do not 
exceed rated voltage by more than 10%: operation below 
90% of rated voltage will cause poor performance or may 
shut the unit off.

0

0

4

6

5

-2

All components identified with the IEC symbol 
in the parts list and the schematic diagram 
designate components in which safety can be 
of special significance when replacing a 
component identified with      .  Use only the

replacement parts designated in the parts list or parts with 
the same rating of resistance, wattage or voltage.