(7)  Panel  light  test. ( a ) Connect the positive lead of a variable voltage dc power supply, adjusted for 24 Vdc, to pin small v of receptacle J1. ( g ) Turn on the power supply. ( h ) The CKT. BRKR. light illuminates. ( i ) Turn off the power supply and discon- nect the test leads. ( b ) Connect the negative lead of the power supply to pin small r of receptacle Jl (10)  Battle  short  light  test. ( c ) Place the PANEL LIGHT switch to the ON  position  and  observe  the  illumination  of  three panel lights. ( a ) Connect the positive lead of a variable voltage dc power suppy adjusted for 24 Vdc, to pin small v of receptacle J1. ( d ) Place the PANEL LIGHT switch to the OFF  position. ( b ) Connect the negative lead of the power supply to pin small r of receptacle J1. ( e ) Turn off the power supply and disconnect the test leads. ( c ) Turn on the power supply. ( d ) The BATTLE SHORT light does not illuminate. (8) Air cleaner condition light test. ( a ) Connect the positive lead of a variable voltage de–power supply, adjusted for 24 Vdc to pin small c of receptacle J1. ( e ) Depress the BATTLE SHORT light, the light illuminates. ( f ) Turn off the power supply and connect the position lead to pin R of receptacle J1. ( b ) Connect the negative lead of the power supply to pin small r of receptacle J1. ( g ) Place the BATTLE SHORT switch to the ON position, the BATTLE SHORT light illum- inates. ( c ) Turn on the power supply. ( d ) The AIR CLEANER CONDITION light does  not  illuminate. ( h ) Place the BATTLE SHORT switch to the OFF position. ( e ) Depress the AIR CLEANER CONDITION light, the light illuminates. ( i ) Turn off the power supply and discon- nect the test leads. ( f ) Turn off the power supply and connect the position lead to pin small u of receptacle J1. (11) Synchronizing lamp test ( g ) Turn on the power supply. ( a ) Connect one lead of a 120 Vac power supply to pin J of receptacle J1. ( h ) The AIR CLEANER CONDITION light illuminates. ( b ) Connect the remaining lead of the power supply to pin G of receptacle J1. ( i ) Turn off the power supply and disconnect the test leads. ( c ) Turn on the power supply. (9)  Circuit  breaker  light  test. ( d ) Place the unit operation switch to the PARALLEL  position. ( a ) Connect the positive lead of a variable voltage dc power supply, adjusted for 24 Vdc, to pin small v of receptacle Jl. ( e ) One of two synchronizing lamps (DS4) shall    illuminate. ( b ) Connect the negative lead of the power supply to Fin small r of receptacle Jl. ( f ) Place the unit operation switch to the single  unit  position. ( c ) Turn on the power supply. ( g ) Turn off the power supply and discon- nect the test leads. ( d ) The CKT. BRKR. light does not illum- inate. ( h ) Repeat the procedure b (11) (a) through (g)  for  the-second  synchronizing  lamp  (DS5)  utiliz- ing pins K and H of receptacle J1. (e) Depress the CKT. BRKR. light, the light   illuminates. (12) DC ammeter test (f) Turn off the power supply and connect the position lead to pin small a of receptacle J1. (a) Connect a Simpson 260 or equivalent 3-8